EX-13.1 2 a15-3974_1ex13d1.htm EX-13.1 TRANSALTA CORPORATION ANNUAL INFORMATION FORM FOR THE YEAR ENDED DECEMBER 31, 2014.

Exhibit 13.1

TRANSALTA CORPORATION

2015 ANNUAL INFORMATION FORM

FOR THE YEAR ENDED DECEMBER 31, 2014

February 18, 2015

TABLE OF CONTENTS |
PRESENTATION OF INFORMATION | 1
SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS | 1
DOCUMENTS INCORPORATED BY REFERENCE | 2
CORPORATE STRUCTURE | 2
OVERVIEW | 3
GENERAL DEVELOPMENT OF THE BUSINESS | 5
BUSINESS OF TRANSALTA | 12
ENVIRONMENTAL RISK MANAGEMENT | 31
RISK FACTORS | 34
EMPLOYEES | 46
CAPITAL STRUCTURE | 46
CREDIT RATINGS | 53
DIVIDENDS | 55
COMMON SHARES | 55
SERIES A SHARES | 56
SERIES C SHARES | 56
SERIES E SHARES | 57
SERIES G SHARES | 57
MARKET FOR SECURITIES | 57
COMMON SHARES | 57
SERIES A SHARES | 58
SERIES C SHARES | 58
SERIES E SHARES | 59
SERIES G SHARES | 59
DIRECTORS AND OFFICERS | 60
INTERESTS OF MANAGEMENT AND OTHERS IN MATERIAL TRANSACTIONS | 71
INDEBTEDNESS OF DIRECTORS, EXECUTIVE OFFICERS AND SENIOR OFFICERS | 71
CORPORATE CEASE TRADE ORDERS, BANKRUPTCIES OR SANCTIONS | 71
CONFLICTS OF INTEREST | 72
LEGAL PROCEEDINGS AND REGULATORY ACTIONS | 72
TRANSFER AGENT AND REGISTRAR | 72
INTERESTS OF EXPERTS | 72
ADDITIONAL INFORMATION | 73
AUDIT AND RISK COMMITTEE | 73
AUDIT AND RISK COMMITTEE CHARTER | A-1
GLOSSARY OF TERMS | B-1

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PRESENTATION OF INFORMATION

Unless otherwise noted, the information contained in this annual information form (“Annual Information Form” or “AIF”) is given as at or for the year ended December 31, 2014. All dollar amounts are in Canadian dollars unless otherwise noted. Unless the context otherwise requires, all references to the “Corporation” and to “TransAlta”, “we”, “our” and “us” herein refer to TransAlta Corporation and its subsidiaries on a consolidated basis. Reference to “TransAlta Corporation” herein refers to TransAlta Corporation, excluding its subsidiaries. Capitalized terms not defined in the body of this AIF shall have their respective meanings set forth in Appendix “B” hereto.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Information Form, the documents incorporated herein by reference, and other reports and filings made with the securities regulatory authorities, include forward-looking statements. All forward-looking statements are based on our beliefs as well as assumptions based on information available at the time the assumption was made and on management’s experience and perception of historical trends, current conditions and expected future developments, as well as other factors deemed appropriate in the circumstances. Forward-looking statements are not facts, but only predictions and generally can be identified by the use of statements that include phrases such as “may”, “will”, “believe”, “expect”, “estimate”, “anticipate”, “intend”, “plan”, “foresee”, “potential”, “enable”, “continue” or other comparable terminology. These statements are not guarantees of our future performance and are subject to risks, uncertainties and other important factors that could cause our actual performance to be materially different from that projected.

In particular, this Annual Information Form contains forward-looking statements pertaining to our business and anticipated future financial performance; our success in executing on our growth projects; the timing and the completion and commissioning of projects under development, including major projects such as the South Hedland Power Project, and their attendant costs; our estimated spend on growth and sustaining capital and productivity projects; expectations in terms of the cost of operations, capital spend, and maintenance, and the variability of those costs, including expectations about the cost savings anticipated from the major maintenance agreement entered into with Alstom; the impact of certain hedges on future reporting earnings and cash flows; expectations related to future earnings and cash flow from operating and contracting activities, including estimates of 2015 comparable earnings before interest, taxes, depreciation, and amortization (“EBITDA”), comparable funds from operations (“FFO”) and comparable free cash flow; estimates of fuel supply and demand conditions and the costs of procuring fuel; expectations for demand for electricity in both the short-term and long-term, and the resulting impact on electricity prices; the impact of load growth, increased capacity, and natural gas costs on power prices; expectations in respect of generation availability, capacity, and production; expectations regarding the role different energy sources will play in meeting future energy needs; expected financing of our capital expenditures; expected governmental regulatory regimes and legislation and their expected impact on us and the timing of the implementation of such regimes and regulations, as well as the cost of complying with resulting regulations and laws; the expected settlement of regulatory investigations and disputes; our trading strategy and the risks involved in these strategies; estimates of future tax rates, future tax expense, and the adequacy of tax provisions; accounting estimates; anticipated growth rates in our markets; our expectations relating to the outcome of existing or potential legal and contractual claims, regulatory investigations, and disputes; expectations regarding the renewal of collective bargaining agreements; expectations for the ability to access capital markets at reasonable terms; the estimated impact of changes in interest rates and the value of the Canadian dollar relative to the U.S. and other currencies in locations where we do business; the monitoring of our exposure to liquidity risk; expectations in respect to the global economic environment and growing scrutiny by investors relating to sustainability performance; our credit practices; and the estimated contribution of Energy Marketing activities to gross margin.

Factors that may adversely impact our forward-looking statements include risks relating to: fluctuations in demand market prices and the availability of fuel supplies required to generate electricity; demand for electricity and our ability to contract our generation for prices that will provide expected returns; the regulatory and political environments in the jurisdictions in which we operate; environmental requirements and changes in, or liabilities under, these requirements; changes in general economic conditions including interest rates; operational risks involving our facilities, including unplanned outages at such facilities; disruptions in the transmission and distribution of electricity; the effects of weather; disruptions in the source of fuels, water or wind required to operate our facilities; natural and man-made disasters; the threat of domestic terrorism and cyberattacks; equipment failure and our ability to carry out or have completed the repairs in a cost-effective manner or timely manner; commodity risk management; industry risk and competition; fluctuations in the value of foreign currencies and foreign political risks; the need for additional financing; structural subordination of securities; counterparty credit risk; insurance coverage; our provision for income taxes; legal, regulatory, and contractual proceedings involving the Corporation; outcomes of investigations and disputes; reliance on key personnel; labour relations matters; and development projects and acquisitions, including delays in the permitting and construction of the South Hedland Power Project and the construction of the Australia Natural Gas Pipeline. The foregoing risk factors, among others, are described in further detail under the heading “Risk Factors” in this Annual Information Form and in the documents incorporated by reference in this Annual

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Information Form, including our Management’s Discussion and Analysis for the year ended December 31, 2014 (the “Annual MD&A”).

Readers are urged to consider these factors carefully in evaluating the forward-looking statements and are cautioned not to place undue reliance on these forward-looking statements. The forward-looking statements included in this document are made only as of the date hereof and we do not undertake to publicly update these forward-looking statements to reflect new information, future events or otherwise, except as required by applicable laws. In light of these risks, uncertainties and assumptions, the forward-looking events might occur to a different extent or at a different time than we have described or might not occur. We cannot assure that projected results or events will be achieved.

DOCUMENTS INCORPORATED BY REFERENCE

TransAlta’s audited consolidated financial statements for the year ended December 31, 2014 and related Annual MD&A are hereby specifically incorporated by reference in this AIF. Copies of these documents are available on SEDAR at www.sedar.com and EDGAR at www.sec.gov.

CORPORATE STRUCTURE

Name and Incorporation

TransAlta Corporation was formed by Certificate of Amalgamation issued under the Canada Business Corporations Act (the “CBCA”) on October 8, 1992. On December 31, 1992, a Certificate of Amendment was issued in connection with a plan of arrangement involving TransAlta Corporation and TransAlta Utilities Corporation (“TransAlta Utilities” or “TAU”) under the CBCA. The plan of arrangement, which was approved by shareholders on November 26, 1992, resulted in common shareholders of TransAlta Utilities exchanging their common shares for shares of TransAlta Corporation on a one for one basis. Upon completion of the arrangement, TransAlta Utilities became a wholly owned subsidiary of TransAlta Corporation.

Effective January 1, 2009, TransAlta completed a reorganization, whereby the assets and business affairs of TAU and TransAlta Energy Corporation (“TransAlta Energy” or “TEC”) (with the exception of the wind business) were transferred to TransAlta Generation Partnership, a new Alberta general partnership, whose partners are TransAlta Corporation and TransAlta Generation Ltd., a wholly owned subsidiary of TransAlta Corporation. TransAlta Generation Partnership is managed by TransAlta Corporation pursuant to the terms of the partnership agreement and a management services agreement.

Immediately following the transfer of assets by TAU and TEC to TransAlta Generation Partnership, TransAlta Corporation amalgamated with TAU, TEC, and Keephills 3 GP Ltd. pursuant to the CBCA.

On November 4, 2009, TransAlta completed its acquisition of Canadian Hydro Developers, Inc.

On December 7, 2010, TransAlta amended its articles to create its First Preferred Series A and B shares; again on November 23, 2011 to create the First Preferred Series C and D shares; again on August 3, 2012 to create the First Preferred Series E and F shares; and then again on August 13, 2014 to create the First Preferred Series G and H shares.

In August 2013, TransAlta Renewables Inc. (“TransAlta Renewables”) completed its initial public offering. In connection with the offering, TransAlta Corporation transferred to TransAlta Renewables certain wind and hydro power generation assets previously held directly or indirectly by TransAlta Corporation. TransAlta Corporation provides all management, administrative and operational services required for TransAlta Renewables to operate and administer its assets and to acquire additional assets.

The registered and head office of TransAlta is located at 110 - 12 th Avenue S.W., Calgary, Alberta, Canada, T2R 0G7.

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As of December 31, 2014, the principal subsidiaries of TransAlta Corporation and their respective jurisdictions of formation are set out below:

Notes:

(1) TransAlta USA Inc. is an indirect wholly owned subsidiary of TransAlta Corporation.

(2) The remaining 0.01 per cent interest in TEC Limited Partnership is owned by TransAlta (Ft. McMurray) Ltd., a wholly owned subsidiary of TransAlta Corporation.

(3) We own, directly and indirectly, an aggregate interest of 70.3 per cent of TransAlta Renewables, which includes 58.92 per cent through direct ownership and 11.38 per cent through TransAlta Generation Partnership. The remaining 29.7 per cent interest in TransAlta Renewables is publicly owned.

OVERVIEW

TransAlta and its predecessors have been engaged in the production and sale of electric energy since 1909. We are among Canada’s largest non-regulated electricity generation and energy marketing companies with an aggregate net ownership interest of 8,184 megawatts (“MW”) of generating capacity. We operate facilities having approximately 9,990 MW of aggregate generating capacity. In addition, we are in the process of constructing a 150 MW combined cycle power station near South Hedland, Western Australia. We are focused on generating and marketing electricity in Canada, the United States and Western Australia through our diversified portfolio of facilities fuelled by coal, natural gas, diesel, hydro and wind.

In Canada, we hold a net ownership interest of approximately 6,317 MW of electrical generating capacity in thermal, natural gas-fired, wind powered and hydroelectric facilities, comprised of 5,161 MW in Western Canada, 922 MW in Ontario, 147 MW in Québec and 88 MW in New Brunswick.

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In the United States, our principal facilities include a 1,340 MW thermal facility and a 101 MW net interest in a wind farm located in Wyoming. The economic interest in the Wyoming wind farm (the “Wyoming Wind Farm”) was transferred to TransAlta Renewables in which we maintain a 70.3 per cent direct and indirect ownership interest.

In Australia, we have 425 MW of net electrical generating capacity from natural gas and diesel-fired generation facilities that are located at customer mine sites. We have also, together with our joint venture partner, DBP Development Group, contracted to design, build, own and operate the 270 km Fortescue River Gas Pipeline which will deliver natural gas to our Solomon Power Station. The pipeline is expected to be completed in 2015. In addition, we are in the process of constructing a 150 MW combined cycle power station near South Hedland, Western Australia. Construction began in early 2015 and the plant is expected to be fully commissioned in 2017.

We regularly review our operations in order to optimize our generating assets and to evaluate appropriate growth opportunities to maximize value to the Corporation. We have in the past, and may in the future, make changes and additions to our fleet of coal, natural gas, hydro, and wind fuelled facilities.

In August, 2013, TransAlta Renewables completed its initial public offering of its common shares. TransAlta is the majority owner of TransAlta Renewables, with an approximate 70.3 per cent direct and indirect ownership interest. TransAlta Renewables is the largest generator of wind power and among the largest publicly traded renewable power generation companies in Canada.

TransAlta’s Map of Operations

The following map outlines TransAlta’s operations as of December 31, 2014.

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GENERAL DEVELOPMENT OF THE BUSINESS

TransAlta is organized into three business segments: Generation, Energy Marketing and Corporate. The Generation segment is responsible for constructing, operating and maintaining our electricity generation, as well as the operation and maintenance of our related mining operations in Canada. The Energy Marketing segment is responsible for marketing our production through short-term and long-term contracts, for securing cost effective and reliable fuel supply, and for maximizing margins by optimizing our assets as market conditions change. In addition to serving our assets, our marketing team actively markets energy products and services to energy producers and customers. This segment also encompasses the management of available generating capacity as well as the fuel and transmission needs of the Generation business. Both segments are supported by a Corporate segment that provides finance, tax, treasury, legal, regulatory, environmental, health and safety, sustainable development, corporate communications, government and investor relations, procurement, information technology, risk management, human resources, internal audit, and other administrative services, including compliance and governance services.

The significant events and conditions affecting our business during the three most recently completed financial years are summarized below. Certain of these events and conditions are discussed in greater detail under the heading “Business of TransAlta” in this AIF.

Recent Developments

2015

Issuance of Bonds

On February 11, 2015, the Corporation and its partner issued bonds secured by their jointly owned Pingston facility. Our share of gross proceeds was $45 million. The bonds bear interest at the annual fixed interest rate of 2.95 per cent, payable semi-annually with no principal repayments until maturity in May 2023. Proceeds were used to repay the $35 million secured debenture bearing interest at 5.28 per cent. Excess proceeds, net of transaction costs, are to be used for general corporate purposes.

Restructuring of Canadian Coal

On January 14, 2015, we initiated a significant cost reduction initiative at our Canadian coal operations to run a stronger and more competitive business. The restructuring resulted in the elimination of positions, providing anticipated full year annual savings of approximately $12 million. Costs associated with the initiative are expected to total $10 million.

Investment Grade Credit Rating from Fitch Ratings

On January 8, 2015, we announced that Fitch Ratings had assigned TransAlta a BBB- /Stable credit rating.

Generation and Business Development

2014

Sundance Unit 7

During 2014, TAMA Power (“TAMA Power”), TransAlta’s partnership with MidAmerican Energy Holdings Company (“MidAmerican”), continued to develop plans to build the Sundance Unit 7 facility, an 856 MW, highly efficient gas-fired power plant in an area adjacent to our Alberta coal operations. On December 11, 2014, the Alberta Utilities Commission (“AUC”) announced a public hearing on the proposed Sundance Unit 7 facility, which is expected to commence in 2015.

Major Maintenance Agreement

On November 14, 2014, we entered into an agreement with Alstom Power Canada Inc. (“Alstom”) to provide major maintenance at our Alberta coal facilities. The agreement relates to ten major maintenance projects over the next three years at our Keephills and Sundance plants. The new arrangement is expected to deliver on average 15 per cent cost reduction per turnaround and shorter turnaround times for major maintenance work, resulting in estimated direct cost savings of $34 million over the full term of the agreement.

South Hedland Power Project

On July 28, 2014, we announced that we had agreed to build, own, and operate a 150 MW combined cycle gas power station in South Hedland, Western Australia to supply power to Regional Power Corporation trading as Horizon Power (“Horizon Power”), a state owned utility, and to the Pilbara Infrastructure Pty Ltd., a wholly owned subsidiary of Fortescue Metals Group (“Fortescue”). The project is estimated to cost

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approximately AUD $570 million which includes the cost of acquiring existing equipment from Horizon Power. The project will be built on an existing site at Boodarie Industrial Estate and is anticipated to be one of the most efficient power stations in the region. The power station will supply Horizon Power’s customers in the Pilbara region as well as Fortescue’s port operations. IHI Engineering Australia has been selected as the contractor to construct the power station. Relevant work and environmental permits have been received and construction commenced in January 2015. The power station is expected to be commissioned and delivering power to customers in the first half of 2017.

TransAlta and Province Reach Agreement on Ghost Reservoir

On June 4, 2014, we announced that we had reached an agreement with the Alberta Government regarding modifying the operations of the Ghost Reservoir to provide part of a solution for flood mitigation. The revised operating pattern of the Ghost Reservoir involves holding the reservoir near its minimum low water level until July 31, 2014, approximately six weeks longer than the prior operating pattern.

California Claim

On May 30, 2014, we announced that our settlement with California utilities, the California Attorney General and certain other parties (the “California Parties”) to resolve claims related to the 2000 - 2001 power crisis in the State of California had been approved by the U.S. Federal Energy Regulatory Commission (“FERC”). The settlement provides for the payment by us of U.S.$52 million in two equal payments and a credit of approximately U.S.$97 million for monies owed to us from accounts receivable. The first payment of U.S.$26 million was paid in June 2014 and the second is expected to be made in 2015.

Proceedings before the Alberta Utilities Commission

On March 21, 2014, the Alberta Market Surveillance Administrator (the “MSA”) filed an application with the AUC alleging, among other things, that TransAlta manipulated the price of electricity in the Province of Alberta when it took outages at certain of its coal-fired generating units in late 2010 and early 2011. TransAlta has denied the MSA’s allegations in their entirety. An oral hearing before the AUC took place in December 2014. The next phase of the hearing, the submission of written arguments by each of the parties, is currently under way and will be completed by the end of February 2015. The AUC’s decision on this matter is expected within 90 days after the written arguments have been submitted.

CE Generation Sale

On February 20, 2014, we announced the sale of our 50 per cent interest in CE Generation, the Blackrock development project (“Blackrock”) and Wailuku Holding Company, LLC (“Wailuku”) to MidAmerican Renewables for proceeds of U.S.$193.5 million. MidAmerican Renewables held the other 50 per cent interest in CE Generation, Blackrock and Wailuku. The sale of our interest in CE Generation and Blackrock closed on June 12, 2014 and the sale of our 50 per cent interest in Wailuku closed on November 25, 2014.

Sundance Unit 6 Agreement

On August 18, 2011, the Sundance Unit 6 Generator Step-Up Transformer was damaged as a result of a fire. We gave notice and claimed force majeure relief under the Alberta PPA. During the third quarter of 2012, the Alberta PPA buyer informed us that they will be taking the matter to arbitration. On February 19, 2014, we reached an agreement with the Alberta PPA buyer related to this Sundance Unit 6 dispute.

Keephills Unit 2

On January 31, 2014, an outage commenced at Unit 2 of our Keephills facility to perform a rewind of the generator stator which arose due to the generator event at Keephills Unit 1 facility in 2013. We gave notice of a High Impact Low Probability (“HILP”) event and claimed force majeure relief under the Alberta PPA.

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Fort McMurray Transmission Project

On January 17, 2014, we announced that our strategic partnership with MidAmerican Transmission, TAMA Transmission (“TAMA Transmission”), which was formed on May 9, 2013, successfully qualified to participate as a proponent in the Fort McMurray West 500 kilovolt Transmission Project. The Alberta Electric System Operator (“AESO”) announced its selection of a short-list of companies, identifying that TAMA Transmission would be participating in the next stage of its competitive process for the project. TAMA Transmission submitted its bid and in December 2014, after completing its review of all bid submissions, the AESO notified TAMA Transmission that the contract had been awarded to a competitor.

Australia Natural Gas Pipeline

On January 15, 2014, we announced that, through a wholly owned subsidiary, an unincorporated joint venture named Fortescue River Gas Pipeline was formed, of which we have a 43 per cent interest. The first project of the new joint venture will be to build, own, and operate an AUD$178 million natural gas pipeline from the Dampier to Bunbury Natural Gas Pipeline to our Solomon power station.

2013

Eastern Canada Ice Storm

In late December 2013, extreme weather conditions impacted our operations in parts of Ontario and Atlantic Canada, causing icing on turbine blades and consequently requiring us to shut down some of the wind turbines. The impact ranged from seven to 12 days of downtime at each of the affected facilities. Operations at all impacted sites have returned to normal.

Western Australia Contract Extension

On October 30, 2013, we announced a long-term contract extension to supply power to the BHP Billiton Nickel West operations in Western Australia from our Southern Cross Energy facilities. The extension was effective immediately and replaced the previous contract which was set to expire at the beginning of 2014.

Wyoming Wind Farm Acquisition

On December 20, 2013, we completed the acquisition, through one of our wholly owned subsidiaries, of a 144 MW wind farm in Wyoming for approximately U.S.$102.7 million from an affiliate of NextEra Energy Resources, LLC. The wind farm is fully operational and contracted under a long-term power purchase agreement (“PPA”) until 2028 with an investment grade counterparty. The economic interest in the wind farm was acquired by TransAlta Renewables in consideration for a payment equal to the original purchase price of the acquisition. We have extended a U.S.$102 million loan to TransAlta Renewables to partially fund the acquisition. The loan requires TransAlta Renewables to repay a minimum of U.S.$45 million of the loan over the first 36 months, (a payment of U.S.$15.0 million was made on March 31, 2014) with the remaining balance due on maturity on December 31, 2018.

Ontario Power Authority Contract

On August 30, 2013, we announced the execution of a new agreement for a 20-year power supply term with the Ontario Power Authority (“OPA”), for the Ottawa gas facility, which is effective January, 2014. The Ottawa gas facility is owned by TransAlta Cogeneration, L.P. (“TA Cogen”), a subsidiary that is owned 50.01 per cent by TransAlta.

Under the new agreement the Ottawa gas facility has become dispatchable. This should assist in reducing the instances of surplus baseload generation in the market, while maintaining the ability of the system to reliably produce energy when it is needed.

Update on Hydro Facilities Due to Southern Alberta Flooding

During the second quarter of 2013, certain of our hydro facilities were impacted by the extreme rainfall and flooding that occurred in Southern Alberta. Though we continue to safely and efficiently resolve operational challenges related to our hydro systems, three of our facilities in the Bow River Basin continue

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to be impacted by these events and are being repaired. We have assessed any financial impact and continue to believe that we have sufficient insurance coverage for this damage, subject to a $5 million deductible.

Sundance Units 1 and 2 Return to Service

In December 2010, Units 1 and 2 of our Sundance facility were shut down due to conditions observed in the boilers at both units. On July 20, 2012, an arbitration panel concluded that Unit 1 and Unit 2 were not economically destroyed under the terms of the Alberta PPA and we were required to restore the facility to service.

The cost to repair Sundance Units 1 and 2 was originally estimated at approximately $215 million. The total spend increased by approximately $25 million due to additional scope of work for balance of plant systems and equipment as well as higher labour costs due to an increase in rates. This work was performed concurrently with the boiler repairs to prevent the need for a later outage for this work. Sundance Unit 1 returned to service on September 2, 2013 and Unit 2 returned to service on October 4, 2013. We have issued notices to the Alberta PPA buyer regarding the cessation of the force majeure period for the two units.

Keephills Unit 1

On March 5, 2013, an outage occurred at Unit 1 of our Keephills facility due to a winding failure found in the generator. Upon completion of the initial repair work, further condition testing and analysis identified greater winding degradation requiring a full rewind of the generator. In response to the event, we gave notice of a HILP event and claimed force majeure relief under the Alberta PPA. In the event of a force majeure, we are entitled to continue to receive our Alberta PPA capacity payment and are protected under the terms of the Alberta PPA from having to pay Availability penalties. The Unit was returned to service on October 6, 2013. Arbitration on the matter began during the third quarter of 2013.

New Richmond

On March 13, 2013, our 68 MW New Richmond wind farm began commercial operations. The total cost of the project remains at approximately $212 million. During 2013, we received a $13 million government grant as part of an agreement to use local resourcing. On March 28, 2011, we announced that we had received approval from the Government of Québec to proceed with the construction of the New Richmond wind project located on the Gaspé Peninsula. New Richmond is contracted under a 20-year electricity supply agreement with Hydro-Québec Distribution.

SunHills Mining Limited Partnership

Effective January 17, 2013, we assumed through our wholly owned subsidiary, SunHills Mining Limited Partnership (“SunHills”), operations and management control of the Highvale mine from Prairie Mines and Royalty Ltd. (“PMRL”). PMRL employees working at the Highvale mine were offered employment by SunHills which agreed to assume responsibility for certain pension plan and pension funding obligations that we had previously funded through the payments made under the PMRL mining contracts.

2012

Sundance Unit 3

On June 7, 2010, an outage occurred at Unit 3 of our Sundance facility due to the mechanical failure of critical generator components, which resulted in the Unit operating at a reduced capacity level. In response to the event, we gave notice of a HILP event and claimed force majeure relief under the Alberta PPA. The claim was disputed by the Alberta PPA buyers.

The matter was heard before an arbitration panel during the third quarter of 2012. On November 23, 2012, the arbitration panel concluded that a HILP event occurred and our claim for force majeure relief was affirmed.

During the fourth quarter of 2012, the uprate at Sundance Unit 3 was completed. The total cost of the project was approximately $25 million and it is expected that a 15 MW efficiency uprate will be achieved for this unit. Although we completed the uprate, the resulting increased capacity will not be realized until

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we replace the generator stator. It is expected that the generator stator will be replaced prior to the end of the second quarter of 2015.

Acquisition of Solomon Power Station

On September 28, 2012, we announced that we completed the acquisition from Fortescue of its 125 MW natural gas- and diesel-fired Solomon power station in Western Australia for U.S.$318 million. The facility is expected to be commissioned in early 2015 and is fully contracted with Fortescue under a long-term PPA with an initial term of 16 years, which term commenced in October 2012, after which Fortescue will have the option either to extend the PPA by an additional five years under the same terms or to acquire the facility.

Centralia Thermal

On July 25, 2012, we announced that we entered into an 11-year agreement to provide electricity from the Centralia Thermal plant to Puget Sound Energy (“PSE”). The contract began in 2014 and runs until 2025 when the plant is scheduled to be shut down under the bill that was signed on December 23, 2011. Under the agreement, and starting in December 2014, PSE buys 180 MW of firm, base-load power starting in December 2014. Commencing in December 2015, the contract increases to 280 MW and from December 2016 to December 2024, the contract is for 380 MW. In 2025, the last year of the contract, the contracted volume is 300 MW. The agreement was approved, with conditions, by the Washington Utilities and Transportation Commission (“WUTC”) on January 9, 2013. On January 23, 2013, it was announced that PSE had filed a petition for reconsideration of certain conditions within the decision issued by the WUTC. On June 25, 2013, regulatory approval was confirmed by the WUTC and as of July 5, 2013, the contract is in effect in accordance with the WUTC’s terms and conditions.

Keephills Units 1 and 2 Uprates

Testing of the Keephills Units 1 and 2 uprates has been completed and it was determined that the actual capability of the uprates was less than originally anticipated. As a result, we have adjusted the uprates to 12 MW bringing the maximum capability of these units to 395 MW each. The total cost of the uprate projects was approximately $51 million.

Project Pioneer

On April 26, 2012, Project Pioneer’s industry partners announced they would not proceed with the joint carbon capture and storage (“CCS”) project. Project Pioneer was a joint effort by TransAlta, Capital Power Corporation (“Capital Power”), Enbridge Inc., and both the Canadian federal and provincial governments to demonstrate the commercial-scale viability of CCS technology.

The first step of the project was to prove the technical and economic feasibility of CCS through a front end engineering and design (“FEED”) study before making any major capital commitments. Following the conclusion of the FEED study, industry partners determined that, although the technology worked and capital costs were in line with expectations, the revenue from carbon sales and the price of emissions reductions were insufficient to allow the project to proceed.

Corporate and Energy Marketing

2014

Board of Director Appointments

During the third quarter of 2014, we announced that Mr. P. Thomas Jenkins, OC, CD and Mr. John P. Dielwart had been appointed to our Board of Directors (“Board”), effective September 1, 2014 and October 1, 2014, respectively. The appointments are the result of our ongoing process of evaluating the skills and composition of the Board, planning for succession and aligning the skills of the Board with the strategic direction of the Corporation.

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Sale of Preferred Shares

On August 15, 2014, we completed a public offering of 6.6 million Series G 5.3 per cent Cumulative Redeemable Rate Reset First Preferred Shares, for aggregate gross proceeds of $165 million. The proceeds from the offering were used for general corporate purposes in support of our business, including the funding of capital projects and the reduction of short-term indebtedness of the Corporation.

Senior Note Offering

On June 3, 2014, we completed an offering of U.S.$400 million aggregate principal amount of senior notes maturing in 2017 and bearing interest at 1.90 per cent. The net proceeds from the offering were used to repay borrowings under existing credit facilities and for general corporate purposes.

Secondary Offering of TransAlta Renewables Common Shares

On April 29, 2014, we completed a secondary offering of an aggregate of 11,950,000 common shares which we held directly and indirectly in TransAlta Renewables at a price of $11.40 per Common Share, resulting in gross proceeds to the Corporation of $136.2 million. The net proceeds from the offering were used for general corporate purposes, including the funding of capital projects and the reduction of indebtedness of the Corporation. Following completion of the transaction, our ownership interest in TransAlta Renewables was reduced to 70.3 per cent.

Executive Leadership Team Appointments

On March 18, 2014, we announced three senior leadership appointments that enhanced our objectives of operational excellence from the base business and growth. Brett Gellner was appointed to the role of Chief Investment Officer, responsible for leading all growth aspects of the Corporation. Donald Tremblay joined TransAlta as Chief Financial Officer, effective March 31, 2014, and on July 3, 2014, Wayne Collins joined TransAlta as Executive Vice President, Coal and Mining Operations.

Dividend

On February 20, 2014, we announced the resizing of our dividend to a quarterly dividend of $0.18 per common share (or $0.72 per common share on an annualized basis) to align with our growth and financial objectives.

2013

Medium Term Notes Offering

On November 25, 2013, we completed an offering of $400 million of senior unsecured medium-term notes maturing in 2020 and bearing interest of five per cent. TransAlta used a portion of the net proceeds from the offering to repay indebtedness and intends to use the remainder to finance the Corporation’s long-term investment plan and growth projects and for general corporate purposes.

TransAlta Renewables

On May 28, 2013, we formed a new subsidiary, TransAlta Renewables, to provide investors with the opportunity to invest directly in a highly contracted portfolio of renewable power generation facilities. At the time of the transaction, TransAlta held an approximate 81 per cent ownership interest in TransAlta Renewables. TransAlta has since reduced its interest to 70.3 percent. See “Corporate and Energy Marketing - 2014 - Secondary Offering of TransAlta Renewables Common Shares”.

Premium Dividend TM Program

On May 8, 2013, we announced that as a result of the current low share price environment, we would suspend the Premium Dividend™ component of the Premium Dividend™, Dividend Reinvestment and Optional Common Share Purchase Plan (the “Plan”) following the payment of the quarterly dividend on July 1, 2013. The Dividend Reinvestment and Optional Common Share Purchase components of the Plan remain effective in accordance with their current terms.

2012

Senior Notes Offering

On November 7, 2012, we completed an offering of U.S.$400 million senior notes maturing in 2022 and bearing interest of 4.50 per cent. The net proceeds from the offering were used to repay borrowings under existing credit facilities and for general corporate purposes.

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Corporate Restructuring

On October 30, 2012, we announced a restructuring of our resources as part of our ongoing strategy to continuously improve operational excellence and accelerate growth. As part of this restructuring, we incurred a one-time pre-tax charge of approximately $13 million.

Strategic Partnership

On October 25, 2012, TransAlta and MidAmerican entered into a new strategic partnership through which the two companies will work together to develop, build, and operate new natural gas-fired electricity generation projects in Canada. The agreement also encompasses our proposed Sundance 7 project. All development and construction, or acquisition, of approved projects will be funded equally by each partner and it is expected that TransAlta will be responsible for construction management, operations, and maintenance of projects that proceed.

Sale of Common Shares

On September 13, 2012, we completed a public offering of 19.2 million common shares and on September 20, 2012, the underwriters exercised, in part, their over-allotment option to purchase 2.0 million common shares, all at a price of $14.30 per common share, resulting in aggregate gross proceeds of $304 million. The proceeds of the offering were used to partially fund the acquisition of the Solomon power station in Australia, to fund the construction of our 68 MW New Richmond wind project, to repay short-term debt, and for general corporate purposes.

MF Global Inc.

In 2011, MF Global Holdings Ltd. filed for bankruptcy protection in the United States. MF Global Holdings Ltd. was the parent company of MF Global Inc., which we used as a broker-dealer for certain commodity transactions. During 2011, a reserve of U.S.$18 million was taken on the collateral when the parent company of MF Global Inc. filed for bankruptcy protection. During 2012, we sold our claim against MF Global Inc. for net proceeds of U.S.$33 million.

Sale of Preferred Shares

On August 10, 2012, we completed a public offering of 9.0 million Series E 5.0 per cent Cumulative Redeemable Rate Reset First Preferred Shares, resulting in gross proceeds of $225 million. The proceeds from the offering were used for general corporate purposes, including the funding of capital projects and the reduction of short-term indebtedness of the Corporation.

Premium Dividend™, Dividend Reinvestment and Optional Common Share Purchase Plan

On February 21, 2012, TransAlta added a Premium Dividend TM Component to its existing Dividend Reinvestment and Share Purchase Plan. The amended and restated plan provides eligible shareholders with two options: (i) to reinvest dividends at a current three per cent discount (may be from zero to five per cent at the discretion of the Board) to the average market price towards the purchase of new shares of TransAlta (the “Dividend Reinvestment Component”) or (ii) to receive the equivalent to 102 per cent of the dividends payable in cash, the premium cash payment (the “Premium Dividend TM Component”).

Eligible shareholders enrolled in either the Dividend Reinvestment Component or the Premium Dividend TM Component will also be eligible to purchase new shares at a discount to the average market price under the Optional Cash Payment component (the “OCP Component”) of the plan by directly investing up to $5,000 per quarter. The applicable discount under the OCP Component is also determined from time to time by the Board and is currently set at three per cent.

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BUSINESS OF TRANSALTA

Generation Business Segment

Our Generation business segment is responsible for constructing, operating and maintaining our electricity generation facilities as well as the related mining operations in Canada. The following table summarizes our generation facilities which are operating, under construction or under development, as at December 31, 2014. Subsequent sections provide more detailed information on facilities by geographic location and fuel type.

Western Canada |  |  |  |  |  |  |  |  |  |  |  |  |
Facility |  | Gross Capacity (MW) (1) |  | Ownership (%) |  | Net Capacity Ownership Interest (1) |  | Fuel |  | Revenue Source |  | Contract Expiry Date(2) |
Genesee 3 |  | 466 |  | 50 |  | 233 |  | Coal |  | Merchant |  | - |
Keephills (3) |  | 790 |  | 100 |  | 790 |  | Coal |  | Alberta PPA/Merchant(3) |  | 2020 |
Keephills 3 |  | 463 |  | 50 |  | 232 |  | Coal |  | Merchant |  | - |
Sheerness |  | 780 |  | 25 |  | 195 |  | Coal |  | Alberta PPA |  | 2020 |
Sundance 1 & 2 units |  | 560 |  | 100 |  | 560 |  | Coal |  | Alberta PPA |  | 2017 |
Sundance 3, 4, 5, 6 units (4) |  | 1,581 |  | 100 |  | 1,581 |  | Coal |  | Alberta PPA / Merchant |  | 2020 |
Fort Saskatchewan |  | 118 |  | 30 |  | 35 |  | Natural gas |  | Long-term contract (“LTC”) |  | 2019 |
Poplar Creek |  | 356 |  | 100 |  | 356 |  | Natural gas |  | LTC/Merchant |  | 2023 |
Ardenville (5) (6) |  | 69 |  | 70 |  | 49 |  | Wind |  | Merchant |  | - |
Blue Trail (5) (6) |  | 66 |  | 70 |  | 46 |  | Wind |  | Merchant |  | - |
Castle River (5) (6) (7) |  | 44 |  | 70 |  | 31 |  | Wind |  | Merchant |  | - |
Cowley North (5) (6) |  | 20 |  | 70 |  | 14 |  | Wind |  | Merchant |  | - |
Cowley Ridge |  | 16 |  | 100 |  | 16 |  | Wind |  | Merchant |  | - |
Macleod Flats (6) |  | 3 |  | 70 |  | 2 |  | Wind |  | Merchant |  | - |
McBride Lake (5) (6) |  | 75 |  | 35 |  | 26 |  | Wind |  | LTC |  | 2024 |
Sinnott (5) (6) |  | 7 |  | 70 |  | 5 |  | Wind |  | Merchant |  | - |
Soderglen (5) (6) |  | 71 |  | 35 |  | 25 |  | Wind |  | Merchant |  | - |
Summerview 1 (5) (6) |  | 70 |  | 70 |  | 49 |  | Wind |  | Merchant |  | - |
Summerview 2 (5) (6) |  | 66 |  | 70 |  | 46 |  | Wind |  | Merchant |  | - |
Akolkolex (5) (6) |  | 10 |  | 70 |  | 7 |  | Hydro |  | LTC |  | 2015 |
Barrier |  | 13 |  | 100 |  | 13 |  | Hydro |  | Alberta PPA |  | 2020 |
Bearspaw |  | 17 |  | 100 |  | 17 |  | Hydro |  | Alberta PPA |  | 2020 |
Belly River (5) |  | 3 |  | 70 |  | 2 |  | Hydro |  | Merchant |  | - |
Big Horn |  | 120 |  | 100 |  | 120 |  | Hydro |  | Alberta PPA |  | 2020 |
Bone Creek (5) (6) |  | 19 |  | 70 |  | 13 |  | Hydro |  | LTC |  | 2031 |
Brazeau |  | 355 |  | 100 |  | 355 |  | Hydro |  | Alberta PPA |  | 2020 |
Cascade |  | 36 |  | 100 |  | 36 |  | Hydro |  | Alberta PPA |  | 2020 |
Ghost |  | 51 |  | 100 |  | 51 |  | Hydro |  | Alberta PPA |  | 2020 |
Horseshoe |  | 14 |  | 100 |  | 14 |  | Hydro |  | Alberta PPA |  | 2020 |
Interlakes |  | 5 |  | 100 |  | 5 |  | Hydro |  | Alberta PPA |  | 2020 |
Kananaskis |  | 19 |  | 100 |  | 19 |  | Hydro |  | Alberta PPA |  | 2020 |
Pingston (5) (6) |  | 45 |  | 35 |  | 16 |  | Hydro |  | LTC |  | 2023 |
Pocaterra |  | 15 |  | 100 |  | 15 |  | Hydro |  | Merchant |  | - |
Rundle |  | 50 |  | 100 |  | 50 |  | Hydro |  | Alberta PPA |  | 2020 |
Spray |  | 103 |  | 100 |  | 103 |  | Hydro |  | Alberta PPA |  | 2020 |
St. Mary (5) (6) |  | 2 |  | 70 |  | 1 |  | Hydro |  | Merchant |  | - |
Taylor (5) (6) |  | 13 |  | 70 |  | 9 |  | Hydro |  | Merchant |  | - |
Three Sisters |  | 3 |  | 100 |  | 3 |  | Hydro |  | Alberta PPA |  | 2020 |
Upper Mamquam (5) (6) |  | 25 |  | 70 |  | 18 |  | Hydro |  | LTC |  | 2025 |
Waterton (5) (6) |  | 3 |  | 70 |  | 2 |  | Hydro |  | Merchant |  | - |
Total Western Canada |  | 6,541 |  |  |  | 5,161 |  |  |  |  |  |  |

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Eastern Canada |  |  |  |  |  |  |  |  |  |  |  |  |
Facility |  | Gross Capacity (MW) (1) |  | Ownership (%) |  | Net Capacity Ownership Interest (1) |  | Fuel |  | Revenue Source |  | Contract Expiry Date(2) |
Mississauga |  | 108 |  | 50 |  | 54 |  | Natural gas |  | LTC |  | 2018 |
Ottawa |  | 74 |  | 50 |  | 37 |  | Natural gas |  | LTC |  | 2017-2033 |
Sarnia |  | 506 |  | 100 |  | 506 |  | Natural gas |  | LTC |  | 2022-2025 |
Windsor |  | 68 |  | 50 |  | 34 |  | Natural gas |  | LTC/Merchant |  | 2016 |
Kent Hills (5) (6) |  | 150 |  | 58 |  | 88 |  | Wind |  | LTC |  | 2033-2035 |
Le Nordais |  | 99 |  | 100 |  | 99 |  | Wind |  | LTC |  | 2033 |
Melancthon (5) (6) (8) |  | 200 |  | 70 |  | 140 |  | Wind |  | LTC |  | 2026-2028 |
New Richmond (6) |  | 68 |  | 70 |  | 48 |  | Wind |  | LTC |  | 2033 |
Wolfe Island (5) (6) |  | 198 |  | 70 |  | 139 |  | Wind |  | LTC |  | 2029 |
Appleton (6) |  | 1 |  | 70 |  | 1 |  | Hydro |  | LTC |  | 2030 |
Galetta (6) |  | 2 |  | 70 |  | 1 |  | Hydro |  | LTC |  | 2030 |
Misema (6) |  | 3 |  | 70 |  | 2 |  | Hydro |  | LTC |  | 2027 |
Moose Rapids (6) |  | 1 |  | 70 |  | 1 |  | Hydro |  | LTC |  | 2030 |
Ragged Chute |  | 7 |  | 100 |  | 7 |  | Hydro |  | LTC |  | 2029 |
Total Eastern Canada |  | 1,484 |  |  |  | 1,157 |  |  |  |  |  |  |

US |  |  |  |  |  |  |  |  |  |  |  |  |
Facility |  | Gross Capacity (MW) (1) |  | Ownership (%) |  | Net Capacity Ownership Interest (1) |  | Fuel |  | Revenue Source |  | Contract Expiry Date(2) |
Centralia Thermal(9) |  | 1,340 |  | 100 |  | 1,340 |  | Coal |  | LTC/Merchant |  | 2025 |
Wyoming Wind (10) |  | 144 |  | 70 |  | 101 |  | Wind |  | LTC |  | 2028 |
Skookumchuck (11) |  | 1 |  | 100 |  | 1 |  | Hydro |  | LTC |  | 2020 |
Total US |  | 1,485 |  |  |  | 1,442 |  |  |  |  |  |  |

Australia |  |  |  |  |  |  |  |  |  |  |  |  |
Facility |  | Gross Capacity (MW) (1) |  | Ownership (%) |  | Net Capacity Ownership Interest (1) |  | Fuel |  | Revenue Source |  | Contract Expiry Date(2) |
Parkeston |  | 110 |  | 50 |  | 55 |  | Natural gas |  | LTC |  | 2016 |
Solomon |  | 125 |  | 100 |  | 125 |  | Natural gas/Diesel |  | LTC |  | 2028 |
Southern Cross(12) South Hedland (13) |  | 245 150 |  | 100 100 |  | 245 150 |  | Natural gas/Diesel Natural gas |  | LTC LTC |  | 2023 2042 |
Total Australia |  | 630 |  |  |  | 575 |  |  |  |  |  |  |
TOTAL |  | 10,140 |  |  |  | 8,334 |  |  |  |  |  |  |

Notes:

(1) MW are rounded to the nearest whole number. Columns may not add due to rounding. Capacity includes all generating assets (generation operations, finance lease, and equity investments).

(2) Where no contract expiry date is indicated, the facility operates as merchant.

(3) Merchant capacity includes a 12 MW uprate on units 1 and 2, which began operation in the second quarter of 2012.

(4) Merchant capacity includes uprates of 15 MW (under development), 53 MW, 53 MW and 44 MW on Sundance units 3, 4, 5 and 6, respectively.

(5) These facilities are EcoLogo® certified (“EcoLogo”). EcoLogo certification is granted to products with environmental performance that meet or exceed all government, industrial safety and performance standards.

(6) Facility owned indirectly by TransAlta Renewables. Ownership (%) reflects the 70.3 per cent direct and indirect ownership interest of TransAlta in TransAlta Renewables.

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(7) Includes seven additional turbines at other locations.

(8) Comprised of two facilities.

(9) Please see “General Development of the Business - Generation and Business Development - 2012 - Centralia Thermal” section in this AIF for information surrounding the contract with PSE.

(10) TransAlta Renewables owns the economic interest in this facility. Ownership (%) reflects only the 70.3 per cent direct and indirect ownership interest of TransAlta in TransAlta Renewables. Please see “General Development of the Business - Generation and Business Development - 2013 - Wyoming Wind Farm Acquisition”.

(11) This facility is used to provide a reliable water supply to Centralia Coal.

(12) Comprised of four facilities.

(13) Plant is under construction and expected to be fully commissioned in mid-2017.

Canada: Western Canada

Thermal Facilities

The following table summarizes our Western Canadian thermal generation facilities:

Location |  | Province |  | Plant |  | Gross Capacity (MW) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date(3) |
Genesee |  | AB |  | Genesee 3 |  | 466 |  | 50 |  | 2005 |  | - |
Keephills |  | AB |  | Keephills Unit No. 1 |  | 395 |  | 100 |  | 1983 |  | 2020 |
|  | AB |  | Keephills Unit No. 2 |  | 395 |  | 100 |  | 1984 |  | 2020 |
|  | AB |  | Keephills Unit No. 3 |  | 463 |  | 50 |  | 2011 |  | - |
Sheerness |  | AB |  | Sheerness Unit No. 1 |  | 390 |  | 25 |  | 1986 |  | 2020 |
|  | AB |  | Sheerness Unit No. 2 |  | 390 |  | 25 |  | 1990 |  | 2020 |
Sundance |  | AB |  | Sundance Unit No. 1(2) |  | 280 |  | 100 |  | 1970 |  | 2017 |
|  | AB |  | Sundance Unit No. 2(2) |  | 280 |  | 100 |  | 1973 |  | 2017 |
|  | AB |  | Sundance Unit No. 3(3) |  | 368 |  | 100 |  | 1976 |  | 2020 |
|  | AB |  | Sundance Unit No. 4 |  | 406 |  | 100 |  | 1977 |  | 2020 |
|  | AB |  | Sundance Unit No. 5 |  | 406 |  | 100 |  | 1978 |  | 2020 |
|  | AB |  | Sundance Unit No. 6 |  | 401 |  | 100 |  | 1980 |  | 2020 |
Total |  |  |  |  |  |  | 4,640 |  |  |  |  |  |  |  |

Notes:

(1) Where no contract expiry date is indicated, the facility operates as merchant.

(2) Please see “General Development of the Business” in this AIF for information with respect to the event of force majeure that resulted in our Sundance 1 and 2 units being removed from service for the duration of 2012, and the arbitration panel’s decision that units 1 and 2 were not economically destroyed and were to be returned to service. The units started generating cash flow in third and fourth quarters of 2013.

(3) Includes the completed 15 MW uprate. Although the uprate has been completed, the resulting increased capacity will not be realized until we replace the generator stator.

Our thermal plants are generally base load plants, meaning that they are expected to operate for long periods of time at or near their rated capacity. The Genesee facility, located approximately 50 kilometres west of Edmonton, Alberta, is jointly owned with Capital Power. Coal for the Genesee 3 facility is provided from the adjacent Genesee mine. The coal reserves of the mine are owned, leased or controlled jointly by PMRL and Capital Power. We have entered into coal supply agreements with PMRL, which operates the mine, to supply coal for the life of the facility. On December 23, 2013, Westmoreland Coal Company (“Westmoreland Coal”) announced that it had entered into an agreement to acquire the Prairie and Mountain coal mining operations of Sherritt International Corporation. The purchased operations include the coal reserves that supply the Genesee 3 facility.

Keephills 1 and 2 and the Sundance facilities are located approximately 70 kilometres southwest of Edmonton, Alberta, and are both owned by TransAlta. Testing of the Keephills unit 1 and unit 2 uprates was completed in the first quarter of 2013 and based on the results, we have adjusted the uprates capacity to 12 MW, bringing the maximum capacity of these units to 395 MW each. The Sheerness facility is located approximately 200 kilometres northeast of Calgary, Alberta and is jointly owned by TA Cogen and ATCO Power (2000) Ltd. (“ATCO Power”). See “TA Cogen” in this AIF.

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On December 16, 2010 and December 19, 2010, unit 1 and unit 2 of our Sundance facility were shut down due to conditions observed in the boilers at both units. On February 8, 2011, we issued a notice of termination for destruction based on the determination that the units could not be economically restored to service under the terms of the Alberta PPA. Due to the uncertainty of the results of the arbitration ruling, we had been continuing to accrue the capacity payments, net of a provision, and to depreciate the asset. The matter was heard before an arbitration panel during the second quarter of 2012. On July 20, 2012, the arbitration panel concluded that units 1 and 2 were not economically destroyed and we were required to restore each unit to service. The panel affirmed that the event met the criteria for force majeure beginning on November 20, 2011 until such time as the units were returned to service. The rebuild of the units was completed in 2013 and the units started generating cash flow in the third and fourth quarters of 2013.

Fuel requirements for our Western Canadian thermal generation facilities are supplied by a surface strip coal mine located in close proximity to the facilities. We own the Highvale mine that supplies coal to the Sundance and Keephills facilities and perform the mining, reclamation and associated work at the Highvale mine. PMRL, under contract with TransAlta, operated the mine on our behalf until January 17, 2013. On that date, we assumed through our wholly-owned subsidiary, SunHills, operating and management control of the Highvale mine. The decision to directly operate our facility was made in line with our operating model for operational excellence and to provide us with greater control over our costs and operations.

We estimate that the recoverable coal reserves contained in this mine are sufficient to supply the anticipated requirements for the life of the facilities it serves, including those running post Alberta PPA expiry and potential plant expansion. We also own the Whitewood mine, which formerly supplied coal to the now decommissioned Wabamun facility. The Whitewood mine is no longer in operation and we have completed reclamation of the site. Certification by the Alberta Energy Regulator is currently underway.

Construction on the Keephills 3 power project started on February 26, 2007. Through Keephills 3 Limited Partnership, TransAlta and Capital Power are equal partners in the ownership of the facility. Capital Power was responsible for the construction of the facility and TransAlta is responsible for managing the joint venture. Keephills 3 began commercial operations on September 1, 2011. The facility is jointly operated by Capital Power and TransAlta. Each partner independently dispatches and markets its share of the unit’s electrical output. We provide the coal fuel to the facility through our Highvale mine.

Coal for the Sheerness facility is provided from the adjacent Sheerness mine. The coal reserves of the mine are owned, leased or controlled jointly by TA Cogen, ATCO Power and PMRL. TA Cogen and ATCO Power have entered into coal supply agreements with PMRL, which operates the mine, to supply coal until 2026. See “TA Cogen” in this AIF. On December 23, 2013, Westmoreland Coal announced that it had entered into an agreement to acquire the Prairie and Mountain coal mining operations of Sherritt International Corporation. The purchased operations include the coal reserves that supply the Sheerness facility.

Natural Gas-Fired Facilities

The following table summarizes our Western Canadian natural gas-fired generation facilities:

Location |  | Province |  | Plant |  | Gross Capacity (MW) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date |
Fort Saskatchewan |  | AB |  | Fort Saskatchewan |  | 118 |  | 30 |  | 1999 |  | 2019 |
Fort McMurray |  | AB |  | Poplar Creek |  | 356 |  | 100 |  | 2001 |  | 2023 |
Total |  |  |  |  |  | 474 |  |  |  |  |  |  |

Our interest in the Fort Saskatchewan facility is held through TA Cogen. See “TA Cogen” in this AIF. The 118 MW natural gas-fired Combined-Cycle cogeneration Fort Saskatchewan plant is owned by TA Cogen and

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Strongwater Energy Ltd. The facility provides electricity and steam to Dow Chemical Canada Inc. under the terms of a long-term contract which expires in 2019.

Our Poplar Creek plant is located in Fort McMurray, Alberta. We operate this 356 MW cogeneration plant which became fully operational in the first quarter of 2001 and delivers approximately 150 MW of electricity and steam to Suncor Energy Inc. (“Suncor”) under the terms of a long-term contract which expires at the end of 2023. Any surplus power not used by Suncor is available to us to sell to other parties, in which case Suncor is entitled to share in the revenue, under certain conditions.

Hydroelectric Facilities

In connection with the formation of TransAlta Renewables, certain hydroelectric facilities in Eastern and Western Canada representing net capacity of approximately 105 MW were indirectly acquired by TransAlta Renewables from TransAlta. TransAlta is the majority owner of TransAlta Renewables, with an approximate 70.3 per cent direct and indirect ownership interest.

As well as contracting for power, long-term and short-term contracts are entered into to sell the environmental attributes from the merchant hydro facilities. These activities help to ensure earnings consistency from these assets. For 2014, approximately 98 per cent of the environmental attributes from the hydro facilities had been sold. For 2015, approximately 96 per cent of the environmental attributes from the hydro facilities have been sold to date. Generally, for facilities under long-term contract, the benefit of the environmental attributes generated flow through to the contract holder.

The following table summarizes our Western Canadian hydroelectric facilities:

Location |  | Province |  | Plant |  | Gross Capacity (MW) (1) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date(2)
Akolkolex River System |  | BC |  | Akolkolex(3)(4) |  | 10 |  | 70 |  | 1995 |  | 2015
|  | BC |  | Pingston(3) (4) |  | 45 |  | 35 |  | 2003, 2004 |  | 2023
Mamquam River System |  | BC |  | Upper Mamquam(3) (4) |  | 25 |  | 70 |  | 2005 |  | 2025
Thompson River System |  | BC |  | Bone Creek(3)(4) |  | 19 |  | 70 |  | 2011 |  | 2031
Bow River System |  | AB |  | Barrier |  | 13 |  | 100 |  | 1947 |  | 2020
|  | AB |  | Bearspaw |  | 17 |  | 100 |  | 1954 |  | 2020
|  | AB |  | Cascade |  | 36 |  | 100 |  | 1942, 1957 |  | 2020
|  | AB |  | Ghost |  | 51 |  | 100 |  | 1929, 1954 |  | 2020
|  | AB |  | Horseshoe |  | 14 |  | 100 |  | 1911 |  | 2020
|  | AB |  | Interlakes |  | 5 |  | 100 |  | 1955 |  | 2020
|  | AB |  | Kananaskis |  | 19 |  | 100 |  | 1913, 1951 |  | 2020
|  | AB |  | Pocaterra |  | 15 |  | 100 |  | 1955 |  | -
|  | AB |  | Rundle |  | 50 |  | 100 |  | 1951, 1960 |  | 2020
|  | AB |  | Spray |  | 103 |  | 100 |  | 1951, 1960 |  | 2020
|  | AB |  | Three Sisters |  | 3 |  | 100 |  | 1951 |  | 2020
North Sask. River System |  | AB |  | Bighorn |  | 120 |  | 100 |  | 1972 |  | 2020
|  | AB |  | Brazeau |  | 355 |  | 100 |  | 1965, 1967 |  | 2020
Oldman River System |  | AB |  | Belly River(3)(4) |  | 3 |  | 70 |  | 1991 |  | -
|  | AB |  | St. Mary(3)(4) |  | 2 |  | 70 |  | 1992 |  | -
|  | AB |  | Taylor(3)(4) |  | 13 |  | 70 |  | 2000 |  | -
|  | AB |  | Waterton(3)(4) |  | 3 |  | 70 |  | 1992 |  | -
Total |  |  |  |  |  | 921 |  |  |  |  |  |

Notes:

(1) MW are rounded to the nearest whole number.

(2) Where no contract expiry date is indicated, generation from the facility is sold by TransAlta on a merchant basis.

(3) These facilities are EcoLogo® certified.

(4) Facility owned indirectly by TransAlta Renewables. Ownership (%) reflects the 70.3 per cent direct and indirect ownership interest of TransAlta in TransAlta Renewables.

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Akolkolex River System

Akolkolex is a run-of-river hydroelectric facility with installed capacity of 10 MW located on the Akolkolex River, south of Revelstoke, British Columbia. It has been operating since 1995. The output from the facility is sold to British Columbia Hydro Power Authority (“BC Hydro”). We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. Preliminary discussions with BC Hydro have begun on a new PPA for Akolkolex that would commence upon expiry of the existing PPA in 2015.

Pingston is a run-of-river hydroelectric facility with installed capacity of 45 MW located on Pingston Creek, southwest of Revelstoke, British Columbia and down river of the Akolkolex facility. It has been operating since 2003. We own an approximate net 40 per cent interest in this facility through our interest in TransAlta Renewables. TransAlta Renewables owns the facility equally with Brookfield Renewable Power Inc. The output from the facility is sold to BC Hydro.

Mamquam River System

Upper Mamquam is a run-of-river hydroelectric facility with installed capacity of 25 MW located on the Mamquam River, east of Squamish, British Columbia, and north of Vancouver. It has been operating since 2005. The output from the facility is sold to BC Hydro. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Thompson River System

Bone Creek is a run-of-river hydroelectric facility with installed capacity of 19 MW located on Bone Creek, 90 kilometres south of the town of Valemount, British Columbia. It has been operating since 2011. The output from the facility is under contract with BC Hydro. The facility also currently qualifies for payments of $10/MWh until 2020 from Natural Resources Canada (“NRCan”), a division of the federal government, through the ecoEnergy for Renewable Power (“eERP”) program. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Bow River System

Barrier is a run-of-river hydroelectric facility with installed capacity of 13 MW located in Seebe, Alberta. It has been operating since 1947. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Bearspaw is a hydroelectric facility with installed capacity of 17 MW located on the Bow River in Calgary, Alberta. It has been operating since 1954. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Cascade is a hydroelectric facility with installed capacity of 36 MW located on the Cascade River in Banff National Park, Alberta. We own 100 per cent of this facility, having purchased it from the Government of Canada in 1941. The following year, we built a new dam and power plant to replace the original, and then, in 1957, added a second generating unit. The facility operates under an Alberta PPA.

Ghost is a hydroelectric facility with installed capacity of 51 MW located on the Bow River in Cochrane, Alberta. It has been operating since 1929. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Horseshoe is a run-of-river hydroelectric facility with installed capacity of 14 MW located in Seebe, Alberta. It has been operating since 1911. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Interlakes is a hydroelectric facility with installed capacity of 5 MW located in Kananaskis, Alberta. It has been operating since 1955. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Kananaskis is a run-of-river hydroelectric facility with installed capacity of 19 MW located in Seebe, Alberta. It has been operating since 1913. We own 100 per cent of this facility. It was expanded in 1951 and modified in 1994. The facility operates under an Alberta PPA.

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Pocaterra is a hydroelectric facility with installed capacity of 15 MW located in Kananaskis, Alberta. It has been operating since 1955. We own 100 per cent of this facility. Generation from the facility is sold in the Alberta spot market.

Rundle is a hydroelectric facility with installed capacity of 50 MW located in Canmore, Alberta on the Spray system. The plant uses water from the Spray Lakes Storage Reservoir. It has been operating since 1951. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Spray is a hydroelectric facility with installed capacity of 103 MW located in Canmore, Alberta on the Spray system. The plant uses water from the Spray Lakes Storage Reservoir. It has been operating since 1951. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Three Sisters is a hydroelectric facility with installed capacity of 3 MW located at the base of the Three Sisters Dam in Canmore, Alberta on the Spray system. The plant uses water from the Spray Lakes Storage Reservoir. It has been operating since 1951. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

North Saskatchewan River System

Bighorn is a hydroelectric facility with installed capacity of 120 MW located in Nordegg, Alberta. It has been operating since 1972. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Brazeau is a hydroelectric facility with installed capacity of 355 MW located in Drayton Valley, Alberta. It has been operating since 1965. We own 100 per cent of this facility. The facility operates under an Alberta PPA.

Oldman River System

Belly River is a run-of-river hydroelectric facility with installed capacity of 3 MW located on the Waterton-St. Mary Headworks Irrigation Canal System, east of the Waterton Reservoir, approximately 75 kilometres southwest of Lethbridge in Southern Alberta. Due to its location along the irrigation canal, Belly River operates from April to October when water is diverted through the canal as part of the St. Mary Irrigation District Water Management Plan. It has been operating since 1991. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA (as defined below), and subsequently sell such generation in the Alberta spot market.

St. Mary is a run-of-river hydroelectric facility with installed capacity of 2 MW located at the base of the St. Mary Dam on the Waterton Reservoir, near Magrath, in Southern Alberta. It has been operating since 1992. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Taylor is a run-of-river hydroelectric facility with installed capacity of 13 MW and is located adjacent to the Taylor Coulee Chute on the Waterton-St. Mary Headworks Irrigation Canal System, which is owned by the Government of Alberta. It has been operating since 2000. We own an approximate net 81 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Waterton is a run-of-river hydroelectric facility with installed capacity of 3 MW located at the base of the Waterton Dam on the Waterton Reservoir, near Hillspring, southwest of Lethbridge, Alberta. It has been operating since 1992. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

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Wind Generation Facilities

In connection with the formation of TransAlta Renewables, certain wind generation facilities representing approximately 1,007 MW were indirectly acquired by TransAlta Renewables from TransAlta. Together with TransAlta Renewables, we own approximately 1,049 MW of net wind generation capacity in 11 wind farms in Western Canada, three in Ontario, two in Québec, two in New Brunswick, and one in the state of Wyoming in the United States.

Wind is not generally a dispatchable fuel; therefore, in merchant markets, wind assets may not be able to secure the annual average pool price. As such, we make different assumptions in forecast revenue received for generation from a wind asset compared to a base load asset. If these price assumptions and generation production forecasts are not correct, the corresponding revenue received may be reduced. Generation production forecasts are based on the long-term average production forecast for a site, reflecting historical climatic conditions. Within any year there may be variations from this long-term average. In order to forecast generation production, a number of factors have to be assumed based on historic on-site data and wind farm design including wake and array losses, wind shear and the electrical losses within the site. If these assumptions are incorrect then actual production will be higher or lower than the long-term forecast for the site.

As well as contracting for power, long-term and short-term contracts are entered into to sell the environmental attributes from the merchant wind facilities. These activities help to ensure earnings consistency from these assets. For 2014, approximately 95 per cent of the environmental attributes from the wind facilities were sold. For 2015, approximately 69 per cent of the environmental attributes from the wind facilities have been sold to date. Generally, for facilities under long-term contract, the benefit of the environmental attributes generated flow through to the contract holder.

The following table summarizes our Western Canadian wind generation facilities:

Location |  | Province |  | Plant |  | Gross Capacity (MW)(1) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date(2)
Fort Macleod |  | AB |  | Ardenville (3)(4) |  | 69 |  | 70 |  | 2010 |  | -
Fort Macleod |  | AB |  | Blue Trail (3)(4) |  | 66 |  | 70 |  | 2009 |  | -
Fort Macleod |  | AB |  | Macleod Flats (3)(4) |  | 3 |  | 70 |  | 2004 |  | -
Fort Macleod |  | AB |  | McBride Lake (3)(4) |  | 75 |  | 35 |  | 2003 |  | 2024
Fort Macleod |  | AB |  | Soderglen (3)(4) |  | 71 |  | 35 |  | 2006 |  | -
Pincher Creek |  | AB |  | Castle River (3)(4) |  | 44 |  | 70 |  | 1997-2001 |  | -
Pincher Creek |  | AB |  | Cowley North (3)(4) |  | 20 |  | 70 |  | 2001 |  | -
Pincher Creek |  | AB |  | Cowley Ridge |  | 16 |  | 100 |  | 1993 |  | -
Pincher Creek |  | AB |  | Sinnott (3)(4) |  | 7 |  | 70 |  | 2001 |  | -
Pincher Creek |  | AB |  | Summerview 1 (3)(4) |  | 70 |  | 70 |  | 2004 |  | -
Pincher Creek |  | AB |  | Summerview 2 (3)(4) |  | 66 |  | 70 |  | 2010 |  | -
Total |  |  |  |  |  | 506 |  |  |  |  |  |

Notes:

(1) MW are rounded to the nearest whole number. Column may not add up due to rounding.

(2) Where no contract expiry date is indicated, the facility operates as merchant.

(3) These facilities are EcoLogo® certified.

(4) Facility owned indirectly by TransAlta Renewables. Ownership (%) reflects the 70.3 per cent direct and indirect ownership interest of TransAlta in TransAlta Renewables.

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Ardenville is a 69 MW wind farm located approximately eight kilometres south of Fort Macleod, Alberta adjacent to the Macleod Flats wind facility. We constructed the project, which commenced commercial operations on November 10, 2010. The Ardenville wind farm is entitled to receive payments of $10/MWh until 2020 from NRCan, through the eERP program. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Blue Trail is a 66 MW wind farm located in southern Alberta which commenced commercial operations in November 2009. The Blue Trail wind farm is entitled to receive payments of $10/MWh until 2019 from NRCan, through the eERP program. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Macleod Flats consists of a single 3 MW turbine and is located near Fort Macleod. It was commissioned in 2004 and was purchased by us in 2009. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

McBride Lake is a 75 MW wind farm located at Fort Macleod, Alberta. We constructed the wind farm, which commenced commercial operations in the third quarter of 2003. McBride Lake is operated by us. We own an approximate net 35 per cent interest in this facility through our interest in TransAlta Renewables. TransAlta Renewables owns the facility equally with ENMAX Green Power Inc. The output from the facility is 100 per cent contracted in the form of a 20-year PPA with ENMAX Energy Corporation. We also own an approximate net 70 per cent interest in the 0.7 MW McBride Lake East facility in the same vicinity through our ownership interest in TransAlta Renewables.

Soderglen is a 71 MW facility located in southern Alberta, southwest of Fort Macleod and 40 kilometres from our wind operations near Pincher Creek. The facility began commercial operations in September 2006. Soderglen is entitled to receive WPPI payments from the federal government at $10/MWh. We own an approximate net 35 per cent interest in this facility through our interest in TransAlta Renewables. TransAlta Renewables owns the facility equally with Nexen Energy ULC. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell 50 per cent of such generation in the Alberta spot market (which excludes that portion of generation that is owned by Nexen Energy ULC).

Castle River is a 40 MW wind farm located in Pincher Creek, Alberta. We also own and operate seven additional turbines totalling 4 MW located individually in the Cardston County and Hillspring areas of southwestern Alberta. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Cowley North is a 20 MW wind farm, located adjacent to Cowley Ridge. It commenced commercial operations in the fall of 2001. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Cowley Ridge has total installed capacity of 16 MW and is located adjacent to Cowley North. It is comprised of two parts: (i) Cowley Ridge, which became operational in 1993, and (ii) the Cowley Expansion, which became operational in 1994, both of which we own 100 per cent. The output from this facility is sold in the Alberta spot market.

Sinnott has a total installed capacity of 7 MW and is located directly east of Cowley Ridge. It commenced commercial operations in the fall of 2001. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

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Summerview 1 is a 68 MW wind farm located approximately 15 kilometres northeast of Pincher Creek, Alberta. We constructed Summerview and it commenced commercial operations in 2004. The Summerview 1 facility, together with an existing 1.8 MW turbine in the area, brings the total wind generation capacity at that location to 70 MW. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Summerview 2 is a 66 MW wind farm located northeast of Pincher Creek, Alberta. We constructed the facility, which began commercial operations in February 2010. The Summerview 2 wind farm expansion is entitled to receive payments of $10/MWh until 2020 from NRCan, through the eERP program. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables. We acquire the generation from the facility pursuant to a Renewables PPA, and subsequently sell such generation in the Alberta spot market.

Canada: Eastern Canada

Natural Gas-Fired Facilities

Our Ontario natural gas-fired generating facilities are summarized in the following table:

Location |  | Province |  | Plant |  | Gross Capacity (MW)(1) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date
Mississauga |  | ON |  | Mississauga (2) |  | 108 |  | 50 |  | 1992 |  | 2018
Ottawa |  | ON |  | Ottawa (2) |  | 74 |  | 50 |  | 1992 |  | 2017-2033
Sarnia |  | ON |  | Sarnia |  | 506 |  | 100 |  | 2003 |  | 2022-2025
Windsor |  | ON |  | Windsor (2) |  | 68 |  | 50 |  | 1996 |  | 2016
Total |  |  |  |  |  | 756 |  |  |  |  |  |

Notes:

(1) MW are rounded to the nearest whole number. Column may not add up due to rounding.

(2) We have a 50 per cent interest in these three facilities through our ownership interest in TA Cogen.

The Mississauga plant is owned by TA Cogen. See “TA Cogen” in this AIF. It is a Combined-Cycle cogeneration facility designed to produce 108 MW of electrical energy. The capacity is contracted under a long-term contract with the Ontario Electricity Financial Corporation (“OEFC”) which expires in 2018. Prior to July 2005, the Mississauga plant also provided cogeneration services to Boeing Canada Inc. (“Boeing”). Boeing exercised its right under the cogeneration services agreement to no longer take and pay for cogeneration services due to the closure of its manufacturing facility. Boeing remains entitled to any steam credits which are based on the total plant electricity generation revenue. On or prior to each of January 1, 2018 and 2023, Boeing may give notice of its intention to continue to purchase or discontinue cogeneration services. In addition, on those same dates, Boeing has the option to require the removal of the Mississauga plant from the leased lands or purchase the Mississauga plant at its net salvage value. Boeing is, however, incented to run the lease to term in 2028 by the annual steam credit payment it receives.

The Ottawa plant is owned by TA Cogen. See “TA Cogen” in this AIF. It is a Combined-Cycle cogeneration facility designed to produce 74 MW of electrical energy. On August 30, 2013, the Corporation announced the re-contracting of the plant with the OPA for a 20-year term, effective January 2014. Please see “General Development of the Business – Generation and Business Development – 2013 – Ontario Power Authority Contract” for more information. The Ottawa plant also provides steam, hot water, and chilled water to the member hospitals and treatment centers of the Ottawa Health Sciences Centre and the National Defence Medical Centre. The thermal energy contract with the Ottawa Health Sciences Centre expires in 2023 and the thermal energy contract with the National Defence Medical Centre expires on December 31, 2017.

The Sarnia plant is a 506 MW Combined-Cycle cogeneration facility that provides steam and electricity to nearby industrial facilities owned by LANXESS AG (formerly Bayer Inc.), Nova Chemicals (Canada) Ltd. (“NOVA”) (which in turn supplies Styrolution, a Styrene production facility formerly owned by NOVA) and Suncor Energy

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Products Inc. We own 100 per cent of this facility. On February 15, 2006, we signed a five-year agreement with the OPA for generation from our Sarnia facility. Subsequently, the Ontario Minister of Energy and Infrastructure directed the OPA to seek contracts with us and certain other “Early Movers” to obtain terms and conditions which were more in keeping with the contracts it was offering new facilities. In September 2009, we signed a new contract with the OPA, effective as of July 1, 2009 and terminating on December 31, 2025, which provides more favourable terms than those previously held by the facility. In addition, the new agreement brought the combined total term contracted with the OPA to 20 years and includes provisions for the parties to share in the impact and benefit of changes in customer steam load or loss of steam customer.

The Windsor plant is owned by TA Cogen. See “TA Cogen” in this AIF. It is a Combined-Cycle cogeneration facility designed to produce 68 MW of electrical energy. Currently, 50 MW of the capacity is sold under a long-term contract to the OEFC. This agreement expires in 2016. The Windsor plant also provides thermal energy to Chrysler Canada Inc.’s minivan assembly facility in Windsor. In 2010, a new agreement was reached with the OEFC to make the plant fully dispatchable in order to sell the remaining capacity and ancillary services to the Ontario power market when it is economical to do so.

Hydroelectric Facilities

Our Ontario hydroelectric facilities are summarized in the following table:

Location |  | Province |  | Plant |  | Gross Capacity (MW) (1) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date
Misema River System |  | ON |  | Misema(2)(3) |  | 3 |  | 70 |  | 2003 |  | 2027
Mississippi River System |  | ON |  | Appleton(2)(3) |  | 1 |  | 70 |  | 1994 |  | 2030
Mississippi River System |  | ON |  | Galetta(2)(3)(4) |  | 2 |  | 70 |  | 1998 |  | 2030
Montréal River System |  | ON |  | Ragged Chute(2) |  | 7 |  | 100 |  | 1991 |  | 2029
Wanapitei River System |  | ON |  | Moose Rapids(2)(3) |  | 1 |  | 70 |  | 1997 |  | 2030
Total |  |  |  |  |  | 14 |  |  |  |  |  |

Notes:

(1) MW are rounded to the nearest whole number.

(2) These facilities are EcoLogo® certified.

(3) Facility owned indirectly by TransAlta Renewables. Ownership (%) reflects the 70.3 per cent direct and indirect ownership interest of TransAlta in TransAlta Renewables.

(4) Galetta was originally built in 1907, but was retrofitted in 1998.

Misema is a run-of-river hydroelectric facility with installed capacity of 3 MW located on the Misema River, close to Englehart, in northern Ontario. This facility has been operating since 2003. Generation from this facility is sold to the OPA under a contract that terminates May 3, 2027. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Appleton is a run-of-river hydroelectric facility with installed capacity of 1 MW located on the Mississippi River, near Almonte, Ontario. The facility has been operating since 1994. Generation from this facility is sold to the OPA under a contract that terminates December 31, 2030. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Galetta is a run-of-river hydroelectric facility with installed capacity of 2 MW located on the Mississippi River, near Galetta, Ontario. This facility was originally built in 1907 and retrofitted in 1998. Generation from this facility is sold to the OPA under a contract that terminates December 31, 2030. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Ragged Chute is a run-of-river hydroelectric facility with installed capacity of 7 MW located on the Montréal River, south of New Liskeard, in northern Ontario. We lease this facility from Ontario Power Generation Inc. and it has been operating since 1991. Generation from this facility is sold to the OPA under a contract that terminates June 30, 2029. We own a 100 per cent interest in this facility.

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Moose Rapids is a run-of-river hydroelectric facility with installed capacity of 1 MW located on the Wanapitei River, near Sudbury, in northern Ontario. This facility has been operating since 1997. Generation from this facility is sold to the OPA under a contract that terminates December 31, 2030. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Wind Generation Facilities

Our Ontario, Québec and New Brunswick wind generation facilities are summarized in the following table:

Location |  | Province |  | Plant |  | Gross Capacity (MW) (1) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date
Kingston |  | ON |  | Wolfe Island (2) |  | 198 |  | 70 |  | 2009 |  | 2029
Melancthon Township |  | ON |  | Melancthon I (2) |  | 68 |  | 70 |  | 2006 |  | 2026
Melancthon and Amaranth Townships |  | ON |  | Melancthon II (2) |  | 132 |  | 70 |  | 2008 |  | 2028
Gaspé Peninsula |  | QC |  | Le Nordais |  | 99 |  | 100 |  | 1999 |  | 2033
|  | QC |  | New Richmond (2) |  | 68 |  | 70 |  | 2012 |  | 2033
Kent Hills |  | NB |  | Kent Hills (2) |  | 96 |  | 58 |  | 2008 |  | 2033
|  | NB |  | Kent Hills Expn. (2) |  | 54 |  | 58 |  | 2010 |  | 2035
Total |  |  |  |  |  | 714 |  |  |  |  |  |

Notes:

(1) MW are rounded to the nearest whole number. Column may not add due to rounding.

(2) Facility owned indirectly by TransAlta Renewables. Ownership (%) reflects the 70.3 per cent direct and indirect ownership interest of TransAlta in TransAlta Renewables.

Wolfe Island is a 198 MW wind project located on Wolfe Island, near Kingston, Ontario. This facility commenced commercial operations in 2009. Generation from this facility is sold to the OPA. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Melancthon I is a 68 MW wind project located in Melancthon Township near Shelburne, Ontario. It commenced commercial operations on 2006. Generation from this facility is sold to the OPA. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Melancthon II is a 132 MW wind project located adjacent to Melancthon I, in Melancthon and Amaranth Townships. It commenced commercial operations in 2008. Generation from this facility is sold to the OPA. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Le Nordais is located at two sites: Cap-Chat with 56.25 MW of installed capacity; and Matane with 42.75 MW of installed capacity. Le Nordais is located on the Gaspé Peninsula of Québec. It commenced commercial operations in 1999. We own 100 per cent of this facility. Generation from this facility is sold to Hydro-Québec.

New Richmond is a 68 MW wind project also located on the Gaspé Peninsula. New Richmond is contracted under a 20-year Electricity Supply Agreement with Hydro-Québec Distribution. It commenced commercial operations in 2013. We own an approximate net 70 per cent interest in this facility through our interest in TransAlta Renewables.

Kent Hills is a 96 MW project located in Kent Hills, New Brunswick, and delivers power under a 25 year LTC with New Brunswick Power. Natural Forces Technologies Inc., an Atlantic Canada-based wind developer, is our co-development partner in this project and exercised its option to purchase up to 17 per cent of the Kent Hills project in May 2009. Kent Hills commenced commercial operations in 2008. We own an approximate net 58 per cent interest in this facility through our interest in TransAlta Renewables.

The Kent Hills expansion is a 54 MW wind farm which also delivers power under a 25 year LTC with New Brunswick Power. Natural Forces exercised their option to purchase a 17 per cent interest in the Kent Hills expansion project subsequent to the commencement of commercial operations. The facility commenced commercial

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operations in 2010. We own an approximate net 58 per cent interest in this facility through our interest in TransAlta Renewables.

All of the electricity generated and sold by our wind division within Canada, with the exception of Macleod Flats and New Richmond, is from facilities that are EcoLogo certified. The New Richmond facility currently has an application under review to become EcoLogo certified. We are an EcoLogo certified distributor of Alternative Source Electricity through Environment Canada’s Environmental Choice program.

TA Cogen

We hold a 50.01 per cent limited partnership interest in TA Cogen, which is an Ontario limited partnership. The remaining 49.99 per cent ownership is held by Canadian Power Holdings Inc., a subsidiary of Cheung Kong Infrastructure Holdings Limited. Canadian Power Holdings Inc. was formed on December 31, 2011 by amalgamation of Stanley Energy Inc. into Stanley Power Inc. and which subsequently changed its name to Canadian Power Holdings Inc. effective December 31, 2013.

TA Cogen holds an interest in the 780 MW Sheerness thermal generation facility in Alberta, the 118 MW Fort Saskatchewan natural gas-fired cogeneration facility in Alberta and the 108 MW Mississauga, the 74 MW Ottawa and the 68 MW Windsor natural gas-fired cogeneration facilities located in Ontario. Description of these facilities, ownership levels and contracted capacity is provided under the heading “Canada – Eastern Canada – Natural Gas-Fired Facilities”.

United States

Our generation facilities in the United States are summarized in the following table:

Location |  | State |  | Plant |  | Gross Capacity (MW)(1) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date
Centralia |  | WA |  | Centralia Thermal No. 1(2) |  | 670 |  | 100 |  | 1971 |  | 2020
|  |  |  | Centralia Thermal No. 2(2) |  | 670 |  | 100 |  | 1971 |  | 2025
|  |  |  | Skookumchuck |  | 1 |  | 100 |  | 1970 |  | 2020
Wyoming |  | WY |  | Wyoming Wind(3) |  | 144 |  | 70 |  | 2003 |  | 2028
Total |  |  |  |  |  | 1,485 |  |  |  |  |  |

Notes:

(1) MW are rounded to the nearest whole number.

(2) Please see “General Development of the Business – Generation and Business Development - 2012 - Centralia Thermal” in this AIF for information surrounding the contract with PSE.

(3) TransAlta Renewables owns the economic interest in this facility. Ownership (%) reflects only the 70.3 per cent direct and indirect ownership interest of TransAlta in TransAlta Renewables. Please see “General Development of the Business - Generation and Business Development - 2013 - Wyoming Wind Farm Acquisition”.

Centralia

We own a two-unit 1,340 MW thermal facility in Centralia, Washington, located south of Seattle. We have entered into a number of multiple year medium and short-term energy sales agreements from the Centralia Thermal plant. In 2011, Washington State passed the TransAlta Energy Bill (chapter 180, Laws of 2011) (the “Bill’’) allowing the Centralia Thermal plant to comply with the State’s GHG emissions performance standards by shutting down one of its two boilers by the end of 2020 and the other by the end of 2025. The Bill removed restrictions that had previously been imposed on the facility limiting the duration of new contracts from the facility, and limiting the technology that the facility would be required to implement for nitrogen oxides (“NOx”) controls. On December 23, 2011, TransAlta and the State entered into the memorandum of agreement which confirmed some of these arrangements in contractual form with the provision that certain terms could terminate at our option if we do not secure at least 500 MW of long-term contract for the Centralia Thermal plant by the end of 2013. On July 25, 2012, we announced that we entered into an 11-year agreement to provide electricity from our Centralia Thermal plant to PSE. The contract begins in 2014 and runs until 2025 when the plant is scheduled to be shut down. Under the

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agreement, PSE will buy 180 MW of firm, base-load power starting in December 2014. In December 2015 the contract increases to 280 MW and from December 2016 to December 2024 the contract is for 380 MW. In the last year of the contract, the contracted volume is for 300 MW.

We sell electricity from the Centralia Thermal plant into the Western Electricity Coordinating Council (“WECC”) and, in particular, on the spot market in the U.S. Pacific Northwest energy market. Our strategy is to balance contracted and non-contracted sales of electricity to manage production and price risk.

We also own a one MW hydroelectric generating facility on the Skookumchuck River near Centralia, and related assets which are used to provide water supply to our generation facilities in Centralia. On December 10, 2010, we entered into an agreement with PSE for Skookumchuck to provide power until 2020.

We also own a coal mine adjacent to the Centralia facility; however, we stopped mining operations at our Centralia coal mine on November 27, 2006. Although we estimate that certain coal reserves remain to be extracted, we have not yet received permits for, nor developed the new area from which this coal could be produced. Coal to fuel the Centralia plant is sourced from the Powder River Basin in Montana and Wyoming. TransAlta is currently party to coal contracts with three suppliers which expire between 2015 and 2025. We expect to continue to source our future coal needs from the Powder River Basin. In December 2014, we began fine coal recovery operations at our Centralia mine. This operation recovers previously wasted coal as part of the mine reclamation process and is expected to provide roughly seven per cent of the fuel use by the Centralia plant.

Under the U.S. Federal Mine Safety and Health Act, TransAlta must report all “significant and substantial” citations at its Centralia mine. During 2014, TransAlta had no reportable events relating to electric equipment and the examination, testing and maintenance thereof. The mine is not in operation. There were no injury incidents or fatalities at the mine during 2014. The total dollar value of all Mine Safety and Health Administration (“MSHA”) assessments was not significant. There are no pending legal actions before the Federal Mine Safety and Health Review Commission involving the Centralia mine and none were pending during 2014.

Reportable Events – Centralia Mine

Mine or Operating Name/MSHA Identification Number |  | Section 104 S&S Citations (#) |  | Total Dollar Value of MSHA Assessments Proposed ($) |  | Total Number of Mining Related Fatalities (#) |  | Received Notice of Pattern Violations Under Section 104(e) (yes/no) |  | Received Notice of Potential to Have Pattern Under Section 104(e) (yes/no) |  | Legal Actions Initiated or Pending During Period (#)
4500416 |  | 0 |  | $800 |  | 0 |  | no |  | no |  | 0

Wyoming Wind

The Wyoming Wind Farm is a 144 MW wind project located near Evanston, Wyoming. The wind farm was acquired in December 2013, for approximately U.S.$102.7 million from an affiliate of NextEra Energy Resources, LLC. The wind farm is fully operational and contracted under a long-term PPA until 2028 with an investment grade counterparty. The economic interest in the wind farm was acquired by TransAlta Renewables from a subsidiary of the Corporation at the time of acquisition in consideration for a payment equal to the original purchase price.

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Australia

Our natural gas and diesel fired generation facilities in Australia, including those under construction, are summarized in the following table:

Location |  | State |  | Plant |  | Gross Capacity (MW) |  | Ownership (%) |  | Commissioning Dates |  | Contract Expiry Date
Kalgoorlie |  | WA |  | Parkeston |  | 110 |  | 50 |  | 1996 |  | 2016
Eastern Goldfields Region |  | WA |  | Southern Cross(1) |  | 245 |  | 100 |  | 1996 |  | 2023
Pilbara Region |  | WA |  | Solomon(2) |  | 125 |  | 100 |  | 2014 |  | 2028
South Hedland |  | WA |  | South Hedland (3) |  | 150 |  | 100 |  | 2017 |  | 2042
Total |  |  |  |  |  | 630 |  |  |  |  |  |

Notes:

(1) Comprised of four facilities.

(2) This facility was acquired in September 2012 and was under construction for the remainder of 2012. The plant is expected to be fully commissioned in early 2015.

(3) Plant is under construction and expected to be fully commissioned in mid-2017.

The Parkeston plant is a 110 MW dual-fuel natural gas and diesel fired power station, which we own in partnership through a 50/50 joint venture with NP Kalgoorlie Pty Ltd., a subsidiary of Newmont Australia Limited. The Parkeston facility primarily supplies energy to Kalgoorlie Consolidated Gold Mines and is contracted until 2016. Any merchant capacity and energy are sold into Western Australia’s wholesale electricity market.

Southern Cross Energy is composed of four natural-gas and diesel-fired generation facilities with a combined capacity of 245 MW. Southern Cross Energy sells its output pursuant to a contract with BHP Billiton which was renewed in October of 2013 for ten years. See “General Development of the Business – Generation and Business Development - 2013 – Western Australia Contract Extension” for more details.

We acquired the 125 MW natural gas and diesel fired Solomon power station in September 2012 from Fortescue. Under the terms of the sale and purchase agreement, Fortescue is required to complete the construction and commissioning of the facility. The Solomon facility is fully contracted with Fortescue under a long-term contract that is intended to support their iron ore mining operations.

In 2014, we established the Fortescue River Gas Pipeline joint venture with DBP Development Group. The joint venture was successfully awarded the contract to design, build, own and operate the 270 km Fortescue River Gas Pipeline which will deliver natural gas to TransAlta’s Solomon Power Station. The pipeline is expected to be completed in the first quarter of 2015 and will operate under a take-or-pay gas transport agreement with a Fortescue Metals Group subsidiary for an initial term of 20 years. The 16-inch diameter pipeline has an initial free-flow capacity of 64 terajoules (TJ) per day.

In 2014, TransAlta was selected as the successfully bidder to design, build, own and operate a 150 MW combined cycle power station near South Hedland, Western Australia. Construction began in early 2015 and the plant is expected to be fully commissioned in 2017. The plant is being constructed under an engineering, procurement and construction agreement with IHI Engineering Australia, a wholly owned subsidiary of IHI Corporation. The plant is fully contracted with two customers for a 25-year term. The majority of the plant’s capacity is contracted to Horizon Power, the state owned electricity supplier in the region. The second customer is the port operations of Fortescue Metals Group.

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Alberta PPAs

All of our Alberta thermal and hydroelectric facilities, other than the Keephills 3, Genesee 3, Belly River, Pocaterra, Waterton, St. Mary and Taylor facilities, and uprated capacity, operate under Alberta PPAs. The Alberta PPAs establish committed capacity and electrical energy generation requirements and Availability targets to be achieved by each thermal plant, energy and ancillary services obligations for the hydroelectric plants, and the price at which electricity is to be supplied. We bear the risk or retain the benefit of Availability under or above a targeted Availability (except for those arising from events considered to be force majeure, in the case of the PPA thermal plants) and any change in costs (unless due to a change in law) required to maintain and operate the facilities.

Our thermal facilities are operated by us, however, they are cycled or dispatched by the buyers under the Alberta PPA. Under the Alberta PPAs, we are exposed to electricity price risk if Availability declines below contracted levels (other than as a result of outages caused by an event of force majeure). In those circumstances, we must pay a penalty on the difference between target Availability and actual Availability at a price equal to the 30-day rolling average of Alberta’s market electricity prices. This rolling average provision attempts to mitigate price spikes that can occur as a result of sudden outages. We attempt to further mitigate this exposure by maintaining contracted and uncontracted capacity in the market, through operation and maintenance practices, and hedging activities.

Our hydroelectric facilities, other than Belly River, Pocaterra, St. Mary, Taylor and Waterton, are aggregated through one Alberta PPA which provides for financial obligations for energy and ancillary services based on hourly targets. We meet these targeted amounts through physical delivery or third party purchases.

Our compensation under the Alberta PPAs is founded on a pricing formula based on the previous cost of service regime that applied under utility regulation. Key elements of the pricing formula are the amount of common equity deemed to form part of the capital structure, the amount of risk premium attributable to deemed common equity and a recovery of certain fixed and variable costs. Common equity is deemed to be 45 per cent of total capital and the return on equity is set annually at a 4.5 per cent premium over the rate of a Government of Canada Bond with maturity of ten years.

The pricing formula includes a provision for site restoration costs for the thermal generating plants during the term of the Alberta PPAs. If the costs recovered are insufficient, then we can apply to the Balancing Pool to recover the incremental portion. The Alberta PPAs include, as part of the capacity payment for hydroelectric operations, an amount for decommissioning.

The expiry dates for our Alberta PPAs range from 2017 to 2020. We are evaluating the economics of running assets post PPA expiry, taking into account published and expected provincial and federal greenhouse gas (“GHG”) and other environmental legislation, including the published federal regulations governing GHG emissions from coal-fired plants. Upon the expiry of the Alberta PPAs, and subject to any legislative limitations, which are addressed below, and our ability to procure an extension to operating licenses, if required, we will then be in a position to sell our electricity to the Alberta Power Pool and to third party purchasers through direct sales agreements.

The Alberta PPAs (together with legislation which applies thereto) permit the Balancing Pool, directly or indirectly as successor to the power purchaser under the Alberta PPAs, to terminate the Alberta PPAs in certain circumstances. If the Balancing Pool exercises its ability to terminate, we will, in those circumstances, be entitled to receive a lump-sum payment in connection with such termination.

In September of 2012, the Canadian federal Government published the final regulations governing GHG emissions from coal-fired power plants, which regulations become effective on July 1, 2015. Please see the section entitled “Environmental Risk Management - Ongoing and Recently Passed Environmental Legislation” below for more details on this legislation.

Renewables PPAs

Upon closing of the Renewables’ Offering, we entered into long-term power purchase agreements with certain subsidiaries of TransAlta Renewables (each a “Merchant Subsidiary”) providing for the purchase by TransAlta, for a fixed price, of all of the power produced at certain merchant facilities (the “Renewables PPAs”). The initial price

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payable in 2013 by TransAlta for output under the Renewables PPAs was $30.00/MWh for wind facilities and $45.00/MWh for hydroelectric facilities, which amounts are adjusted annually for changes in the CPI. The CPI adjusted prices for 2015 are $30.86/MWh for wind facilities and $46.29/MWh for hydroelectric facilities. Under the terms of each Renewables PPA, the Merchant Subsidiary is under no obligation to deliver any specified amount of energy and, in no event, shall any penalties or curtailment payments be payable under the Renewables PPA. The Merchant Subsidiary will assume all operating and generating risk and TransAlta will only be required to purchase power that is actually produced.

Each Renewables PPA has a term of 20 years or end of asset life, where end of asset life is less than 20 years. Each Renewables PPA may be terminated by: (a) the mutual agreement of the parties; (b) the Merchant Subsidiary upon the occurrence of a material default by TransAlta; and (c) TransAlta (i) upon the occurrence of a material default by the Merchant Subsidiary; (ii) upon a change of control of TransAlta Renewables; or (iii) upon a change of control of the Merchant Subsidiary.

Energy Marketing Segment

Our Energy Marketing segment provides a number of strategic functions, including the following:

· Gathering and analyzing market trends to enable more effective strategic planning and decision making.

· Negotiating and entering into contractual agreements with customers for the sale of output from our generation assets, including electricity, steam or other energy-related commodities;

· Negotiating and managing fuel supply arrangements with third parties for our generation assets. This includes scheduling, billing and settlement of physical deliveries of natural gas and other fuels;

· The development and execution of our corporate hedging strategy within Board approved parameters; and

· The optimization of the asset fleet to maximize gross margin and mitigation of market risks.

The Energy Marketing segment also derives additional revenue by providing fee based asset management services to third parties, by earning margins on third party gas and power transactions, and by trading electricity and other energy commodities (i.e. fuels). The origination and trading activities are focused on the existing asset and customer footprint of the Corporation.

The segment seeks to measure and manage a number of risks for the assets and for our trading books. The key risk control activities of the Energy Marketing segment include the measurement and management of market, credit, operational, reputational, compliance, and legal risks.

The segment uses Value at Risk (“VaR”), Earnings at Risk (“EaR”), and tail risk measures to monitor and manage the risks within our asset and trading portfolios. VaR and EaR measure the potential losses that could occur over a given time period due to changes in market risk factors. Back tests are used to provide further sensitivities to the market risks with the portfolio. Compliance, reputational, and legal risks are managed within our legal and compliance policies, and monitoring tools are used to flag compliance risks. The Energy Marketing segment actively manages the risks within approved limits and our policies.

Competitive Environment

We are the largest generator of electricity in Alberta, measured by capacity, and also have a portfolio of generation assets in the Pacific Northwest and the western U.S. We also own and operate generating assets in British Columbia, Ontario, Québec, New Brunswick, the State of Wyoming, and Australia.

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We expect electricity demand to grow as the economy improves. In the long-term, most markets are expected to show growing demand for electricity; however, an increasing emphasis on efficiency may reduce future growth rates below historical levels. In addition to increased demand, many of the markets in which we participate have established renewable portfolio targets or standards that require new renewable power investments. As most forms of renewable generation also involve intermittent or uncertain levels and timing of production, higher levels of renewable generation may be accompanied by greater capacity requirements. We believe that continued and growing demand for electricity, renewable portfolio standards, and the potential of increasing amounts of renewable generation to require additional capacity, may provide an opportunity to increase our generation capacity.

Alberta is Canada’s fourth largest province by population with approximately 4.1 million residents representing approximately 11.5 per cent of Canada’s total population. Alberta consumed approximately 80,000 GWh of electricity in 2014, with a peak demand of 11,169 MW. The AESO predicts load growth of approximately 3.7 per cent for 2015. The aggregate installed capacity of grid-connected generating facilities in Alberta was approximately 16,150 MW as of December 31, 2014.

British Columbia is Canada’s third largest province by population with approximately 4.6 million residents, representing approximately 13 per cent of Canada’s total population. In 2010, British Columbia passed the Clean Energy Act which seeks to develop realistic and achievable goals for conservation, energy efficiency and clean energy. Under the Clean Energy Act, British Columbia is aiming to be self-sufficient by 2016 with at least 93 per cent of electricity generated from clean or renewable sources. Currently, the majority of their electricity is obtained from their hydro system. Due to new mining and oil and gas development, and liquefied natural gas terminals at coastal locations, British Columbia’s load profile is changing and is expected to require considerable new energy and capacity additions over the next 20 years.

Ontario is Canada’s largest province by population with approximately 13.7 million residents representing 38.5 per cent of Canada’s total population. Ontario consumed 139,804 GWh of electricity in 2014. The near term power demand outlook is expected to remain relatively unchanged from 2014 for Ontario, as the global economy continues to struggle combined with provincial conservation initiatives, downward pressure from embedded solar capacity growth, impacts from changing the Global Adjustment charge for large customers to be based on their peak demand, and time-of-use-rates. The Ontario Independent Electricity System Operator shows 33,771 MW of grid-connected capacity in November 2014.

Québec is Canada’s second largest province by population with approximately 8.2 million residents, representing approximately 23.1 per cent of Canada’s total population. Quebec’s generation includes 35,829 MW of capacity owned by Hydro-Quebec, in addition to the Churchill Falls entitlement and independently owned facilities. Hydro-Quebec’s Sustainable Development Action plan from 2013 has goals including increasing hydro capacity by 910 MW by 2016 through the Romaine project, a 1,550 MW hydroelectric complex to be built on the Rivière Romaine, and achieving energy savings of 11 terrawatt hours by 2015.

New Brunswick is Canada’s eighth largest province by population with approximately 0.75 million residents, or 2.1 per cent of Canada’s total population. Peak demand was forecasted to be 3,100 MW in 2014 under the 2014 Integrated Resource Plan. New Brunswick Power has an installed capacity of 3,513 MW, as well as 731 MW of wind and other resources through PPAs. The government of New Brunswick has a renewable portfolio standard of 40 per cent by 2020 (including existing hydro). New Brunswick Power expects to add a small amount of renewable power (75 MW) by 2020 but does not forecast other generation additions in that time frame.

The WECC is the largest region geographically of the ten regions in the North American Electric Reliability Council and is divided into four sub regions. The sub region referred to as the Northwest Power Pool (“NWPP”) comprises British Columbia, Alberta, Washington, Oregon, Idaho, Montana, Utah, Western Wyoming and Northern Nevada. The NWPP forecasts peak demand reaching 68,500 MW in the winter of 2014/15, and a winter capacity of about 110,000 MW in the same time frame.

Wyoming is one of the smallest states by population, having a population of approximately 583,000. Average demand for electricity in 2012 was approximately 1,937 MW. The state is a significant power exporter, with direct connections to Utah and Idaho. Wyoming has an excellent wind resource, and around 1,400 MW of wind has been developed, primarily to serve export markets as Wyoming does not currently have a renewable portfolio standard.

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Australia has two separate electricity markets, the National Electricity Market and the Western Australia Electricity Market (“WAEM”), as well as two smaller vertically integrated utilities. The WAEM, where our Australian assets are located, is comprised of the South West Interconnected System (“SWIS”) and the North West Interconnected System (“NWIS”), as well as 29 non-interconnected distribution systems. Overall, the installed capacity for public use in Western Australia is 6,453 MW. There are 917 MW of total renewables in the region, of which 469 are for public use and the remainder belongs to private generators. We own 300 MW of gas generation in the SWIS region and 125 MW of non-connected gas and diesel generation in the northern region. In addition, we have a further 150 MW under development in the NWIS.

The Western Australia Department of Treasury expects that the state GDP growth will accelerate from 2.25 per cent in 2014/15 to 5 per cent by 2016/17. Electricity demand growth is expected to be strong to support this growth, as the Chamber of Minerals and Energy of Western Australia estimate that the electricity growth rate will be 5.7 per cent per annum over the period to 2020. The majority of demand is expected to be met through self-generation (60 per cent or about 3,300 GWh annually), largely fuelled by natural gas. Natural gas is also expected to displace diesel during this timeframe as infrastructure is developed. We believe we have significant knowledge and expertise in the supply of gas-powered electricity to independent mining operations to compete in the market.

Competitive Strengths

We believe that we are well positioned to achieve our business strategy due to our competitive strengths, which include the following:

Operating strength – Our gas, wind and hydro fleet performance is above industry standards. We have outperformed the average North American Energy Reliability Corporation Availability for gas-fired units for the time period 2007-2012. For wind farms greater than 50 MW in size, we have outperformed the benchmark over the period 2009-2013 based on the North American benchmark database of IHS Inc. The majority of our hydro operations have performed better than the 2013 Navigant Consulting benchmark average with some performing better than the first quartile for their respective size and age. We continue to strive to be leading performers in the operation of our facilities. In addition, Availability has been recognized at our Alberta coal facilities to be above NERC average for similar plants.

Stable cash flow base – Through the use of Alberta PPAs, long-term contracts, and other short-term physical and financial contracts, on average, approximately 70 per cent of our capacity is contracted over the next seven years. The net revenue received under these contractual arrangements helps to minimize short-term revenue fluctuations due to the variable price of electricity.

Financial strength – We have investment grade ratings from Moody’s Investors Services, Inc. (“Moody’s”), Standard & Poor’s, a division of the McGraw Hill Companies, Inc. (“S&P”), Dominion Bond Rating Service Limited (“DBRS”) and Fitch Ratings Inc. (“Fitch”).

Fuel diversity – We have an interest in a diverse mix of fuels used for the generation of electricity, including coal, natural gas, hydro, and wind. We believe that this mix reduces the impact on our performance in the event of external events affecting one fuel source.

Management team – Our management team has substantial industry, international, investment and market experience.

Energy Marketing expertise – We believe that our Energy Marketing segment has enhanced returns from our existing generation base and has allowed us to obtain more favourable pricing for uncommitted electricity, secure fuel supply on a cost-effective basis and fulfill electricity delivery obligations in the event of an outage.

Ownership or control of coal supply – We own, control or lease coal reserves in Alberta which provide a long-term and stable source of fuel for our thermal generation facilities in Alberta. Our mines in Alberta contain some of the lowest sulphur coal in North America, averaging less than 0.25 per cent sulphur at the Highvale mine. Coal with lower sulphur content emits less sulphur dioxide (“SO 2”) when it is burned.

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Wind Generation – Through our ownership interest in TransAlta Renewables, we are one of the largest owners and operators of wind generation in Canada. Our management team has developed key relationships with customers, suppliers and policy makers that provide a competitive advantage in the development, operations and marketing of wind generation.

Environment – We are a recognized leader in sustainable development and we have taken early preventative action on a number of environmental fronts in advance of regulation.

Corporate Segment

Our Corporate Segment provides finance, tax, treasury, legal, regulatory, environmental, health and safety, sustainable development, corporate communications, government and investor relations, information technology, risk management, human resources, internal audit, and other administrative support.

For further information on TransAlta’s segment earnings and assets, please refer to Note 35 of our audited consolidated financial statements for the year ended December 31, 2014, which financial statements are incorporated by reference herein. See “Documents Incorporated by Reference” herein.

ENVIRONMENTAL RISK MANAGEMENT

We are subject to federal, provincial, state and local environmental laws, regulations and guidelines concerning the generation and transmission of electrical and thermal energy and surface mining. We are committed to complying with legislative and regulatory requirements and to minimizing the environmental impact of our operations. We work with governments and the public to develop appropriate frameworks to protect the environment and to promote sustainable development.

Ongoing and Recently Passed Environmental Legislation

Changes in current environmental legislation do have, and will continue to have, an impact upon our operations and our business.

Alberta

The Specified Gas Emitters Regulation (“SGER”) regulating greenhouse gas (“GHG”) emissions in Alberta has been in effect since 2007. When first enacted, the SGER included a sunset clause whereby it would automatically expire on September 1, 2014. In July 2014, the Alberta Government extended the SGER for six months and then again extended it in December 2014 to now expire at the end of June 2015. Neither one of these extensions included any changes to the underlying regulation. It is anticipated that the Alberta Government will consult with stakeholders in early 2015 about potential changes to be made to the SGER. TransAlta owns and operates facilities that are subject to the SGER and we anticipate being an active participant in Alberta Government’s consultations on potential changes to the SGER.

In Alberta there are requirements for coal-fired generation units to implement additional air emission controls for NOx and SO 2, once they reach the end of their respective Alberta PPA, in most cases at 2020. These regulatory requirements were developed by the province in 2004 as a result of multi-stakeholder discussions under Alberta’s Clean Air Strategic Alliance (“CASA”). However, the release of the federal GHG regulations, which are discussed below, has created a misalignment between the CASA air pollutant requirements and schedules, and the GHG retirement schedules for older coal plants, which in themselves will result in significant reductions of NOx and SO 2. We are currently engaged unilaterally and with other stakeholders in reviewing these regulations to ensure coordination between GHG and air pollutant regulations, such that emission reduction objectives are achieved in the most effective manner while taking into consideration the reliability and cost of Alberta’s generation supply.

Ontario

On January 13, 2015, the Ontario Government announced its plan to put a price on carbon emissions in 2015, as part of its climate change program and stated objective of reducing greenhouse gas emissions by 15 per cent by 2020.

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No details are available yet. Our contracts at gas facilities in the province generally include provisions protecting us from the adverse effects of changes in laws.

Canada

In September 2012, the Canadian federal government published the final regulations governing GHG emissions from coal-fired plants, which become effective on July 1, 2015. The regulations provide for up to 50 years of life for coal units, at which point units must meet an emissions performance standard of approximately 420 tonnes per GWh. There are some exceptions that require older units commissioned before 1975 to reach end of life by December 31, 2019, and units commissioned between 1975 and 1986 to reach end of life by December 31, 2029. The regulations also provide flexibility for the substitution and deferral of emission reduction requirement between different units. The flexibility provisions are useful to TransAlta due to our large coal fleet.

United States

In June 2013, President Obama unveiled his “Climate Action Plan.” The Plan directed the U.S. Environmental Protection Agency (“EPA”) to re-propose New Source Performance Standards (“NSPS”) for new power plants by September 2013 and also to propose limits for existing units by June 2014, finalizing them one year later. The NSPS standards were subsequently proposed in September 2013 to require emissions performance similar to partial CCS controls. The proposed standards received a significant amount of public comments and have not yet been finalized. Further to the direction provided by President Obama, in June 2014 the U.S. EPA released the Clean Power Plan proposal which provides state specific guidelines for emission intensities to be achieved by existing power plants. The proposed rules are expected to be finalized by June 2015. Once finalized, the proposal required states to prepare state implementation plans by June 2016. The Washington State EPA greenhouse gas standard for the electricity sector takes into consideration the planned shut-down of Centralia. We, therefore, do not expect the standard to materially impact our existing coal units at Centralia.

In December 2011, the EPA issued national standards for mercury emissions from power plants. Existing sources will have up to four years to comply. We have already voluntarily installed mercury capture technology at our Centralia Thermal plant, and began full capture operations in early 2012. We have also installed additional technology to further reduce NOx, consistent with the Bill passed in 2011.

Effective January 2013, direct deliveries of power to the California Independent System Operator are subject to Cap and Trade Regulations established by the California Air Resource Board. We continue to monitor our GHG inventory into California.

In addition to the Federal, Regional and State regulations that we must comply with, we also comply with the standards established by the North American Electric Reliability Corporation (“NERC”). NERC is the electric reliability organization certified by FERC in the United States to establish and enforce reliability standards for the bulk-power system. NERC develops and enforces reliability standards; assesses adequacy annually; monitors the bulk-power system; and educates, trains and certifies industry personnel.

Australia

In July, 2014, the Australian government repealed its national carbon tax regulating certain levels of CO 2 emissions.

TransAlta Activities

Reducing the environmental impact of our activities has a benefit not only to our operations and financial results, but to the communities in which we operate. We expect that increased scrutiny will be placed on environmental emissions and compliance. We, therefore, take a proactive approach to minimizing risks to our results. Our Board provides oversight to our environmental management programs and emission reduction initiatives in order to ensure continued compliance with environmental regulations.

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Our environmental management programs encompass the following elements:

Renewable Power

We continue to invest in and build renewable power resources, primarily through TransAlta Renewables. Our 68 MW New Richmond wind facility was commissioned in March 2013 and in December 2013 TransAlta acquired a 144 MW wind farm in Wyoming. The Wyoming Wind Farm is fully operational and contracted under a long-term PPA until 2028 with an investment grade counterparty. The economic interest in the wind farm was subsequently acquired by TransAlta Renewables from a subsidiary of the Corporation in consideration for a payment equal to the original purchase price of the acquisition. TransAlta believes that a larger renewable portfolio provides increased flexibility in generation and creates incremental environmental value through renewable energy certificates or through emission offsets. In addition, we have developed policies and procedures in order to comply with regulatory guidance and to lessen any environmental disruption caused by our renewable power resources, which includes monitoring noise and the avian impacts at our wind generation facilities.

Environmental Controls and Efficiency

We continue to make operational improvements and investments to our existing generating facilities to reduce the environmental impact of generating electricity. We installed mercury control equipment at our Alberta thermal operations in 2010 in order to meet the Province’s 70 per cent reduction objectives. In 2013 and 2014, we tested the equipment to capture a certain amount of carbon at our Alberta coal operations. At our Centralia coal plant we have been achieving 70 per cent carbon capture since 2012 on a voluntary basis. Our new Keephills 3 plant began operation in September 2011 using supercritical combustion technology to maximize thermal efficiency, as well as SO 2 capture and low NOx combustion technology, which is consistent with the technology that is currently in use at Genesee 3. Uprate projects at our Keephills and Sundance plants are expected to improve the energy and emissions efficiency of those units.

The Alberta PPAs contain change-in-law provisions that allow us the opportunity to recover capital and operating compliance costs from our Alberta PPA buyers.

Policy Participation

We are active in policy discussions at a variety of levels of government. These have allowed us to engage in proactive discussions with governments and industry participants to meet environmental requirements over the longer term.

Clean Combustion Technologies

We look to advance clean energy technologies through organizations such as the Canadian Clean Coal Power Coalition, which examines emerging new and retrofit clean combustion technologies such as gasification, oxygen combustion, biomass co-firing, and coal beneficiation.

Offsets Portfolio

TransAlta maintains a greenhouse gas emissions offset portfolio with a variety of instruments that can be used for compliance purposes or otherwise banked or sold. We continue to examine additional emission offset opportunities that also allow us to meet emission targets at a competitive cost. We ensure that any investments in offsets will meet certification criteria in the market in which they are to be used.

Environmental Regulations

Recent changes to environmental regulations may materially adversely affect us. As indicated under “Risk Factors” in this AIF and within the Risk Management section of the Annual MD&A, many of our activities and properties are subject to environmental requirements, as well as changes in our liabilities under these requirements, which may have a material adverse effect upon our consolidated financial results.

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RISK FACTORS

Readers should consider carefully the risk factors set forth below as well as the other information contained and incorporated by reference in this AIF. For a further discussion of risk factors affecting TransAlta, please refer to “Risk Factors” in the Annual MD&A, which is incorporated by reference herein.

A reference herein to a material adverse effect on the Corporation means such an effect on the Corporation on its business, financial condition, results of operations, or its cash flows, as the context requires.

The operation and maintenance of our facilities involves risks that may materially and adversely affect our business.

The operation, maintenance, refurbishment, construction and expansion of power generation facilities involve risks, including breakdown or failure of equipment or processes, fuel interruption and performance below expected levels of output or efficiency. Certain of our generation facilities, particularly in Alberta, were constructed many years ago and may require significant capital expenditures to maintain peak efficiency or to maintain operations. There can be no assurance that our maintenance program will be able to detect potential failures in our facilities prior to occurrence or eliminate all adverse consequences in the event of failure. In addition, weather related interference, work stoppages and other unforeseen problems may disrupt the operation and maintenance of our facilities and may materially adversely affect us.

We have entered into ongoing maintenance and service agreements with the manufacturers of certain critical equipment. If a manufacturer is unable or unwilling to provide satisfactory maintenance or warranty support, we may have to enter into alternative arrangements with other providers if they cannot perform the maintenance themselves. These arrangements could be more expensive to us than our current arrangements and this increased expense could have a material adverse effect on our business. If we are unable to enter into satisfactory alternative arrangements, our inability to access technical expertise or parts could have a material adverse effect on us.

While we maintain an inventory of, or otherwise make arrangements to obtain, spare parts to replace critical equipment and maintain insurance for property damage to protect against certain operating risks, these protections may not be adequate to cover lost revenues or increased expenses and penalties which could result if we were unable to operate our generation facilities at a level necessary to comply with sales contracts (including the Alberta PPAs).

We may be subject to the risk that it is necessary to operate a plant at a capacity level beyond that which we have contracted for power in order to provide steam in fulfillment of such a contract. In such circumstances, the costs to produce the steam being sold may exceed the revenues derived therefrom.

Equipment failure may cause us to suffer a material adverse effect.

There is a risk of equipment failure due to wear and tear, latent defect, design error or operator error, among other things, which could have a material adverse effect on our business. Although our generation facilities have generally operated in accordance with expectations, there can be no assurance that they will continue to do so. In addition, there can be no assurance that any applicable insurance coverage would be adequate to protect our business from material adverse effects.

We may fail to meet financial expectations.

Our quarterly revenue and results of operations are difficult to predict and fluctuate from quarter to quarter. Our quarterly results of operations are influenced by a number of factors, including the risks described in this AIF, many of which are outside of our control, which may cause such results to fall below market expectations.

Although we base our planned operating expenses in part on our expectations of future revenue, a significant portion of our expenses are relatively fixed in the short-term. If revenue for a particular quarter is lower than expected, we likely will be unable to proportionately reduce our operating expenses for that quarter, which will adversely affect our results of operations for that quarter.

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We could be adversely affected by natural disasters or other catastrophic events.

Our generation facilities and their operations are exposed to potential damage and partial or complete loss, resulting from environmental disasters (e.g. floods, high winds, fires and earthquakes), equipment failures and other events beyond our control. The occurrence of a significant event which disrupts the ability of the generation facilities to produce or sell power for an extended period, including events which preclude existing customers from purchasing electricity, could have a material adverse effect on us. Our generation facilities could be exposed to effects of severe weather conditions, natural or man-made disasters and other potentially catastrophic events such as a major accident or incident at our sites. In certain cases, there is the potential that some events may not excuse us from performing our obligations pursuant to agreements with third parties. The fact that several of our generation facilities are located in remote areas may make access for repair of damage difficult.

Dam and dyke failures may result in lost generating capacity, increased maintenance and repair costs and other liabilities.

A natural or man-made disaster, and certain other events, including natural or induced seismic activity, could potentially cause dam failures at our hydroelectric facilities. The occurrence of dam or dyke failures at any of our hydroelectric or coal facilities could result in a loss of generating capacity, damage to the environment or damages and harm to third parties or the public, and such failures could require us to incur significant expenditures of capital and other resources or expose us to significant liabilities. If such failures occur, we could be exposed to significant liability for damages. There can be no assurance that our dam safety program will be able to detect potential dam failures prior to occurrence or eliminate all adverse consequences in the event of failure. Other safety regulations could change from time to time, potentially impacting our costs and operations. Reinforcing all dams or dykes to enable them to withstand more severe events could require us to incur significant expenditures of capital and other resources. The consequences of dam failures could have a material adverse effect on us.

We may be adversely affected if our supply of water is materially reduced.

Hydroelectric, natural gas and coal-fired plants require continuous water flow for their operation. Shifts in weather or climate patterns, seasonable precipitation, the timing and rate of melting, run off, and other factors beyond our control, may reduce the water flow to our facilities. Any material reduction in the water flow to our facilities would limit our ability to produce and market electricity from these facilities and could have a material adverse effect on us. There is an increasing level of regulation respecting the use, treatment and discharge of water, and respecting the licensing of water rights in jurisdictions where we operate. Any such change in regulations could have a material adverse effect on us.

Variation in wind levels may negatively impact the amount of electricity generated at our wind facilities.

Wind is naturally variable. Therefore, the level of electricity produced from our wind facilities will also be variable. In addition, the strength and consistency of the wind resource at our wind facilities may vary from what we anticipate due to a number of factors including: the extent to which our site-specific historic wind data and wind forecasts accurately reflects actual long-term wind speeds, strength and consistency; the potential impact of climatic factors; the accuracy of our assumptions relating to, among other things, weather, icing, degradation, site access, wake and wind shear line losses and wind shear; and the potential impact of topographical variations.

A reduced amount of wind at the location of one or more of our wind facilities over an extended period may reduce the production from such facilities, as well as any environmental attributes that accrue to us related to that production and reduce our revenues and profitability.

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Changes in the price of electricity and availability of fuel supplies required to generate electricity may materially adversely affect our business.

A significant portion of our revenues are tied, either directly or indirectly, to the market price for electricity in the markets in which we operate. Market electricity prices are impacted by a number of factors including: the strength of the economy, the available transmission capacity, the price of fuel that is used to generate electricity (and, accordingly, certain of the factors that affect the price of fuel described below); the management of generation and the amount of excess generating capacity relative to load in a particular market; the cost of controlling emissions of pollution, including potentially the cost of carbon; the structure of the particular market; and weather conditions that impact electrical load. As a result, we cannot accurately predict future electricity prices and electricity price volatility could have a material adverse effect on us.

We buy natural gas and a portion of our coal to supply the fuel needed to generate electricity. We could be materially adversely affected if the cost of fuel that we must buy to generate electricity increases to a greater degree than the price that we can obtain for the electricity that we sell. Several factors affect the price of fuel, many of which are beyond our control, including:

· prevailing market prices for fuel;

· global demand for energy products;

· the cost of carbon and other environmental concerns;

· weather-related disruptions affecting the ability to deliver fuels or near-term demand for fuels;

· increases in the supply of energy products in the wholesale power markets;

· the extent of fuel transportation capacity or cost of fuel transportation service into our markets; and

· the cost of mining that, in turn, depends on various factors such as labour market pressures, equipment replacement costs and permitting.

Changes in any of these factors may increase our cost of producing power or decrease the amount of revenue received from the sale of power, which could have a material adverse effect on us.

Disruption of fuel supply to certain of our thermal plants could have an adverse impact on our financial condition.

Certain of our thermal facilities depend on third parties to supply fuel, including natural gas and coal. As a result, we face the risks of supply interruptions and fuel price volatility, as fuel deliveries may not exactly match those required for energy sales, due in part to our need to pre-purchase fuel inventories for reliability and dispatch requirements. Disruption of transportation services of fuel, whether because of weather-related problems, strikes, lock-outs, break-downs of locks and dams or other events could impair our ability to generate electricity and could adversely affect our results of operations. Significantly, the coal used to fuel the Centralia Thermal facility is now sourced from the Powder River Basin in Montana and Wyoming and we have entered into contracts to purchase and transport such coal to our Centralia Thermal facility. Our existing coal contracts for the Centralia Thermal plant expire between 2015 and 2025. The loss of our suppliers or our inability to renew our existing coal contracts for Powder River Basin coal at favourable terms could also significantly affect our ability to serve our customers and have an adverse impact on our financial condition and results of operations.

Changes in general economic conditions may have a material adverse effect on us.

Adverse changes in general economic and market conditions and, more specifically, in the markets in which we operate could negatively impact demand for electricity, revenue, operating costs, timing and extent of capital expenditures, the net recoverable value of plant, property and

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equipment, results of financing efforts, credit risk and counterparty risk, which could cause us to suffer a material adverse effect. Changes in interest rates can impact our borrowing costs and the capacity revenues that we receive pursuant to the Alberta PPAs.

There are risks associated with our Alberta PPAs.

Under the government-mandated Alberta PPAs, pursuant to which we operate most of our thermal and hydroelectric facilities in Alberta, we are subject to certain risks, including the possibilities of penalties for unplanned outages and the burden of increased costs required to maintain and operate our generation facilities.

The Alberta PPAs establish committed capacity and Availability targets to be achieved by each coal-fired plant, energy and ancillary services obligations for the hydroelectric plants, and compensation for meeting the Alberta PPA obligations. Under the Alberta PPAs applicable to coal-fired plants, in the event of an unplanned outage other than an outage determined to be caused by force majeure, we must pay a penalty for the lost production based upon a price equal to the 30 day trailing average of Alberta market electricity prices. Consequently, an unplanned outage could have a material adverse effect on us.

We bear some of the impact of increases in our operating costs (other than increases arising as a result of a “change of law” as such term is defined in the Alberta PPAs) because the price which we are able to receive for our capacity under the Alberta PPAs is based on a schedule of forecast fixed costs. Many of the forecast costs will be determined by indices, formulae or other means for the entire term of the Alberta PPAs. Our actual results will vary from the forecasts on which the Alberta PPAs are based. Operating costs could increase as a result of a number of factors which are beyond our control. A significant increase in our operating costs could have a material adverse effect on our business. In addition, there can be no assurance that we will realize sufficient returns under the Alberta PPAs to cover the capital costs we are required to invest under such PPAs.

From time to time during the term of the Alberta PPAs, issues may arise regarding the intended operation of the Alberta PPAs which may require certain provisions of the Alberta PPAs to be interpreted, and the interpretations given may not be in our favour. In such circumstances, we could be materially and adversely affected.

The market price for our common shares may be volatile.

The market price for our common shares may be volatile and subject to wide fluctuations in response to numerous factors, many of which are beyond our control, including the following: (a) actual or anticipated fluctuations in our results of operations; (b) recommendations by securities research analysts; (c) changes in the economic performance or market valuations of other companies that investors deem comparable; (d) the loss or resignation of executive officers and other key personnel; (e) sales or perceived sales of additional common shares; (f) significant acquisitions or business combinations, strategic partnerships, joint ventures or capital commitments by or involving our or our competitors which prove to be ill considered; and (g) trends, concerns, technological or competitive developments, regulatory changes and other related issues in the renewable power generation industry or our target markets.

Financial markets have experienced significant price and volume fluctuations in recent years that have particularly affected the market prices of equity securities of companies and such fluctuations have, in many cases, been unrelated to the operating performance, underlying asset values or prospects of such companies. Accordingly, the market price of our common shares may decline even if our operating results, underlying asset values or prospects have not changed. Additionally, these factors, as well as other related factors, may cause decreases in asset values which may result in impairment losses. Certain institutional investors may base their investment decisions on consideration of our environmental, governance and social practices and performance against such institutions’ respective investment guidelines and criteria, and failure to meet such criteria may result in a limited or no investment in our common shares by those institutions, which could adversely affect the trading price of our common shares.

Our cash dividend payments are not guaranteed.

The payment of dividends under our dividend policy is not guaranteed and could fluctuate. The Board has the discretion to determine the amount of dividends to be declared and paid to shareholders. We may alter our dividend policy at any time and the payment of dividends will depend on, among other things, results of operations; financial

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condition; current and expected future levels of earnings; operating cash flow; liquidity requirements; market opportunities; income taxes; maintenance and growth capital expenditures; debt repayments; legal, regulatory and contractual constraints; working capital requirements; tax laws and other relevant factors. Our short and long-term borrowings may prohibit us from paying dividends at any time at which a default or event of default would exist under such debt, or if a default or event of default would exist as a result of paying the dividend.

Over time, our capital and other cash needs may change significantly from our current needs, which could affect whether we pay dividends and the amount of any dividends we may pay in the future. If we continue to pay dividends at the current level, we may not retain a sufficient amount of cash to finance growth opportunities, meet any large unanticipated liquidity requirements or fund our operations in the event of a significant business downturn. The Board, subject to the requirements of our bylaws and other governance documents, may amend, revoke or suspend our dividend policy at any time. A decline in the market price or liquidity, or both, of our common shares could result if the Board establishes large reserves that reduce the amount of quarterly dividends paid or if we reduce or eliminate the payment of dividends.

We will be dependent on the operations of our facilities for our cash availability. The actual amount of cash available for dividends to holders of our common shares will depend upon numerous factors relating to each of our generation facilities including: operating performance of our generation facilities, profitability, changes in revenues, fluctuations in working capital, capital expenditure levels, applicable laws, compliance with contracts and contractual restrictions contained in the instruments governing any indebtedness. Any reduction in the amount of cash available for distribution from our generation facilities will reduce the amount of cash available to pay dividends to holders of our common shares.

We operate in a highly competitive environment and may not be able to compete successfully.

We operate in a number of Canadian provinces, as well as in the United States and Australia. These areas of operation are affected by competition ranging from large utilities to small independent power producers, as well as private equity and international conglomerates. Some competitors have significantly greater financial and other resources than we do. Competitive harm could have a material adverse effect on our business.

We could suffer lost revenues or increased expenses and penalties if we are unable to operate our generation facilities at a level necessary to comply with our PPAs.

The ability of our facilities to generate the maximum amount of power which can be sold under PPAs is an important determinant of our revenues. Under certain PPAs, if the facility is made available less than the required Availability in a given contract year, penalty payments may be payable to the relevant purchaser by us. The payment of any such penalties could adversely affect our revenues and profitability.

Our revenues may be reduced upon expiration or termination of PPAs.

We sell power under PPAs that expire at various times. In addition, these PPAs may be subject to termination in certain circumstances, including default by the facility or plant owner or operator. When a PPA expires or is terminated, it is possible that the price received by the relevant facility or plant for power under subsequent selling arrangements may be reduced significantly. It is also possible that PPAs negotiated after the initial PPAs have run their course may not be available at prices that permit the continued operation of the affected facility or plant on a profitable basis. If this occurs, the affected facility or plant may be forced to permanently cease operations.

Variations in weather can affect demand for electricity and our ability to generate electricity.

Due to the nature of our business, our earnings are sensitive to weather variations from period to period. Variations in winter weather affect the demand for electrical heating requirements. Variations in summer weather affect the demand for electrical cooling requirements. These variations in demand translate into spot market price volatility. Variations in precipitation also affect water supplies, which in turn affect our hydroelectric assets.

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Ice can accumulate on wind turbine blades in the winter months. The accumulation of ice on wind turbine blades depends on a number of factors, including temperature, and ambient humidity. The accumulation of ice on wind turbine blades can have a significant impact on energy yields, and could result in the wind turbine experiencing more down time. Extreme cold temperatures can also impact the ability of wind turbines to operate effectively and this could result in more downtime and reduced production.

We may be unsuccessful in the defence of legal actions.

We are occasionally named as a defendant in claims and legal actions and as a party in commercial disputes which are resolved by arbitration. There can be no assurance that we will be successful in the defence of these claims and legal actions or that any claim or legal action that is decided adverse to us will not materially and adversely affect us.

The laws and regulations in the various markets in which we operate are subject to change, which may materially adversely affect us.

Certain of the markets in which we operate and intend to operate are subject to significant regulatory oversight and control. We are not able to predict whether there will be any further changes in the regulatory environment, including potential regulation of the rates allowed to be charged and the capital structure of wholesale generating companies such as ours, changes in market structure or market design or what the ultimate effect of a changing regulatory environment will have on our business. Existing market rules, regulations and reliability standards are often dynamic and may be revised or reinterpreted, and new laws and regulations may be adopted or become applicable to us or our facilities, which could have a material adverse effect on us.

We manage these risks systematically through a regulatory and compliance program designed to reduce any potential negative impact on us. However, we cannot guarantee that we will be able to adapt our business in a timely manner in response to any changes in the regulatory regimes in which we operate, and such failure to adapt could have a material adverse effect on our business.

Regulatory authorities may also from time to time audit or investigate our activities in the markets in which we operate or pursue trading. Such audits or investigations may result in sanctions or penalties which may materially affect our future activities, our reputation or our financial status.

Our facilities are also subject to various licensing and permitting requirements in the jurisdictions in which we operate. Many of these licenses and permits need to be renewed from time to time. If we are unsuccessful in renewing such licenses or permits, or the terms of such licenses or permits are changed in a manner that is adverse to our business, we could be materially adversely affected.

Any changes in the rules and regulations of provincial or state public utility commissions or other regulatory bodies in the other markets in which we compete or may compete in the future may materially adversely affect us.

Our business could be materially affected by greater regulation of over-the-counter derivatives, which could affect our ability to economically hedge our generation.

Title VII of the Dodd-Frank Act, as well as comparable Canadian rulemaking that is expected to be implemented in the near term, increases the regulation of transactions involving over-the-counter (“OTC”) derivative financial instruments, including the requirement for central clearing of many OTC derivatives transactions. The effect of these derivative reforms on our business depends on pending rulemaking proceedings. Regulatory change could adversely affect our ability to economically hedge our generation, by reducing liquidity in the energy markets and, if we are required to clear such transactions on exchanges or meet other requirements, by significantly increasing the collateral costs associated with these activities. It is not known at this time whether, and, if so, to what extent, we will be required to provide collateral (for both our cleared and uncleared transactions) in excess of what we currently provide under our existing hedge relationships. Other features of derivative regulation which will have an impact on our energy trading and treasury activities include trade reporting, position limits and new trade execution

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requirements. Rulemaking and implementation will take effect over several years, which makes it difficult to assess its full impact on us at this time.

Many of our activities and properties are subject to environmental requirements and changes in, or liabilities under these requirements, may materially adversely affect our business.

Our operations in three countries are subject to federal, provincial, state and local environmental laws, regulations and guidelines, relating to the generation and transmission of electrical and thermal energy and surface mining, pertaining to pollution and protection of the environment, health and safety and governing among other things, air emissions, water usage and discharges, storage, treatment and disposal of waste and other materials and remediation of sites and land use responsibility (collectively, “environmental regulation”). These laws can impose liability for costs to investigate and remediate contamination without regard to fault and under certain circumstances liability may be joint and several, resulting in one responsible party being held responsible for the entire obligation. Environmental regulation can also impose, among other things, restrictions, liabilities and obligations in connection with the generation, handling, use, storage, transport, treatment and disposal of hazardous substances and waste and can impose clean up, disclosure or other responsibilities with respect to spills, releases and emissions of various substances to the environment. Environmental regulation can also require that facilities and other properties associated with our operations be operated, maintained, abandoned and reclaimed to the satisfaction of applicable regulatory authorities. In addition, there is an increasing level of environmental regulation regarding the use, treatment and discharge of water and we anticipate the adoption of new or additional emission regulations at a national level in Canada, the United States and Australia, which may impose different compliance requirements standards on our business. These various compliance standards may result in additional cost requirements for our business or may impact our ability to operate our facilities.

To comply with environmental regulations, we must incur material capital and operating expenditures relating to environmental monitoring, emissions and effluent control equipment and processes; emissions measurement, verification and reporting; emissions fees and other compliance activities or obligations. We expect to continue to have environmental expenditures in the future. Stricter standards, new or greater regulation, increased enforcement by regulatory authorities, more extensive permitting requirements, an increase in the number and types of assets operated by the Corporation subject to environmental regulation and the implementation of provincial, state and national GHG emissions, mercury emissions or other air emissions regulation which in themselves may not be aligned and may imposed varying obligations on us in the jurisdictions in which we operate and which could increase the amount of our expenditures. To the extent these expenditures cannot be passed through to our customers under our power purchase agreements, including Alberta PPAs or otherwise, our costs could be material. In addition, compliance with environmental regulation might result in restrictions on some of our operations. If we do not comply with environmental regulation, regulatory agencies could seek to impose statutory, administrative and/or criminal liabilities on us or curtail our operations and significant expenditures on compliance, new equipment or technology, reporting obligations and research and development.

In addition to environmental regulation, we could also face civil liability in the event that private parties seek to impose liability on us for property damage, personal injury or other costs and losses. We cannot guarantee that lawsuits or administrative or investigative actions will not be commenced against us and otherwise affect our operations and assets. If an action is filed against us or which may otherwise affect our operations and assets, we could be required to make substantial expenditures to defend or evidence our activities or to bring our Corporation, our operations and assets into compliance, which could have a material adverse effect on our business.

A number of recent federal, provincial, state and local regulatory efforts continue to focus on potential climate change or GHG emissions regulation, and mandatory GHG reporting requirements have become effective in both Canada and the United States. Mandatory GHG emissions reductions requirements are expected to impose increased costs on our business, as is expected to be the case generally for thermal power producers in North America. We are subject to other air quality regulations including mercury regulations. To the extent new or additional GHG, mercury or other air emission regulations may require us to incur costs that cannot be passed through to our customers under its power purchase agreements, including Alberta PPAs or otherwise, the costs could be material and have a material adverse effect on our business. In terms of TransAlta’s existing gas-fired facilities, we currently have change-in-law provisions allowing flow-through of carbon tax-related costs, and we expect that any new contracts will contain similar provisions.

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Our surface mining operations are subject to laws and regulations establishing mining, environmental protection and reclamation standards for all aspects of surface mining. As a mine owner or operator, we must obtain permits from the applicable regulatory body providing for the authorization of certain mining operations that result in a disturbance of the surface. These requirements seek to limit the adverse impacts of coal mining and more restrictive requirements may be adopted from time to time. As a mine owner or operator, we may also be required to submit a bond or otherwise secure payment of certain long-term obligations including mine closure or reclamations costs. Surety bond costs have increased in recent years while the market terms of such bonds have generally become more unfavourable. In addition, the number of companies willing to issue surety bonds has decreased. We could be required to self-fund these obligations should we be unable to renew or secure the required surety bonds for our mining operations or because it is more economical to do so.

Changes in opinions of our Corporation from external parties may have a material adverse effect on us.

Reputation risk relates to the risk associated with our business because of changes in opinion from the general public, private stakeholders, governments, and other entities. Our reputation is one of our most valued assets. The potential for harming our reputation exists in every business decision and all risks can have an impact on reputation, which in turn can negatively impact our business and securities. Reputational risk cannot be managed in isolation from other forms of risk. Negative impacts from a compromised reputation could include revenue loss, reduction in customer base, and decreased value of our securities.

We depend on certain partners that may have interests or objectives which conflict with our objectives and such differences could have a negative impact on us.

We have entered into various types of arrangements with communities or joint venture partners for the operation of our facilities. Certain of these partners may have or develop interests or objectives which are different from or even in conflict with our objectives. Any such differences could have a negative impact on the success of our facilities. We are sometimes required through the permitting and approval process to notify and consult with various stakeholder groups, including landowners, First Nations and municipalities. Any unforeseen delays in this process may negatively impact our ability to complete any given facility on time or at all.

We are dependent on access to parts and equipment from certain key suppliers and we may be adversely affected if these relationships are not maintained.

Our ability to compete and expand will be dependent on having access, at a reasonable cost, to equipment, parts and components which are technologically and economically competitive with those utilized by our competitors. Although we have individual framework agreements with various suppliers, there can be no assurance that these relationships with suppliers will be maintained. If they are not maintained, our ability to compete may be impaired due to lack of access to these sources of equipment, parts or components.

Our information technology systems are vulnerable to damages from computer viruses, natural disasters, unauthorized access, cyber-attack and other similar disruptions, all of which could have a material adverse effect on our business.

We rely on technology, mainly on computer, telephone, satellite, cellular and related networks and infrastructure, to conduct our business and monitor the production of our generation facilities. These systems and infrastructure could be vulnerable to unforeseen problems, including, but not limited to vandalism and theft. We have put in place a number of systems, processes and practices designed to protect against intentional or unintentional misappropriation or corruption of our systems and information or disruption of our operations. Despite our implementation of security measures, our information technology systems are vulnerable to damages from computer viruses, natural disasters, unauthorized access, cyber-attack and other similar disruptions.

Any damage or failure that causes an interruption in operations could have an adverse effect on our customers. Additionally, we protect our generation facility infrastructure against physical damage, security breaches and service disruption from any of a variety of causes. Theft, vandalism, and other disruptions could jeopardize the security of information stored in and transmitted through our systems and network infrastructure, and could result in significant

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set-backs, potential liabilities, and deter future customers. While we have systems, policies, hardware, practices, and procedures designed to prevent or limit the effect of the failure, interruptions or security breaches of our generation facility and infrastructure, there can be no assurance that these measures will be sufficient and that such failures, interruptions or security breaches will not occur or, if they do occur, that they will be adequately addressed in a timely manner. We closely monitor both preventive and detective measures to manage these risks.

Our facilities rely on national and regional transmission systems and related facilities that are owned and operated by third parties and have both regulatory and physical constraints that could impede access to electricity markets.

Our power generation facilities depend on electric transmission systems and related facilities owned and operated primarily by third parties to deliver the electricity that we generate to delivery points where ownership changes and we are paid. These grids operate with both regulatory and physical constraints which in certain circumstances may impede access to electricity markets. There may be instances in system emergencies in which our power generation facilities are physically disconnected from the power grid, or our production curtailed, for short periods of time. Most of our electricity sales contracts do not provide for payments to be made if electricity is not delivered.

Our power generation facilities may also be subject to changes in regulations governing the cost and characteristics of use of the transmission and distribution systems to which our power generation facilities are connected. Our power generation facilities in the future may not be able to secure access to this interconnection or transmission capacity at reasonable prices, in a timely fashion or at all, which could then cause delays and additional costs in attempting to negotiate or renegotiate PPAs or to construct new projects. In addition, we may not benefit from preferential arrangements in the future. Any such increased costs and delays could delay the commercial operation dates of any new projects and negatively impact our revenues and financial condition.

Trading risks may have a material adverse effect on our business.

Our trading and marketing business frequently involves the establishment of trading positions in the wholesale energy markets on both a medium-term and short-term basis. To the extent that we have long positions in the energy markets, a downturn in market prices will result in losses from a decline in the value of such long positions. Conversely, to the extent that we enter into forward sales contracts to deliver energy that we do not own, or take short positions in the energy markets, an upturn in market prices will expose us to losses as we attempt to cover any short positions by acquiring energy in a rising market.

In addition, from time to time, we may have a trading strategy consisting of simultaneously holding a long position and a short position, from which we expect to earn a profit based on changes in the relative value of the two positions. If, however, the relative value of the two positions changes in a direction or manner that we did not anticipate, we would realize losses from such a paired position.

If the strategy that we use to hedge our exposures to these various risks is not effective, we could incur significant losses. Our trading positions can be impacted by volatility in the energy markets that, in turn, depend on various factors, including weather in various geographical areas and short-term supply and demand imbalances, which cannot be predicted with any certainty. A shift in the energy markets could adversely affect our positions which could also have a material adverse effect on our business.

We use a number of risk management controls conducted by our independent Risk Management group in order to limit our exposure to risks arising from our trading activities. These controls include risk capital limits, VaR, EaR, tail risk scenarios, position limits, concentration limits, credit limits, and approved product controls. We cannot guarantee that losses will not occur and such losses may be outside the parameters of our risk controls.

Because of our multinational operations, we are subject to currency rate risk and regulatory and political risk.

We have exposure to various currencies as a result of our investments and operations in foreign jurisdictions, the earnings from those operations, the acquisition of equipment and services from foreign suppliers, and our U.S. denominated debt. Our exposures are primarily to the U.S. and Australian currencies. Changes in the values

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of these currencies relative to the Canadian dollar could negatively impact our earnings or the value of our foreign investments. While we attempt to manage this risk through the use of hedging instruments, including cross-currency interest rate swaps, forward exchange contracts and matching revenues and expenses by currency at the Corporate level, there can be no assurance that these risk management efforts will be effective, and fluctuations in these exchange rates may have a material adverse effect on our business.

In addition to currency rate risk, our foreign operations may be subject to regulatory and political risk. Any change to the regulations governing power generation or the political climate in the countries where we have operations could impose additional costs and have a material adverse effect on us.

We may have difficulty raising needed capital in the future, which could significantly harm our business.

To the extent that our sources of cash and cash flow from operations are insufficient to fund our activities, we may need to raise additional funds. Additional financing may not be available when needed, and if such financing is available, it may not be available on terms that are favourable to our business.

Recovery of the capital investment in power projects generally occurs over a long period of time. As a result, we must obtain funds from equity or debt financings, including tax equity transactions, or from government grants, to help finance the acquisition of projects and to help pay the general and administrative costs of operating our business. Our ability to arrange financing, either at the corporate level or at the subsidiary level (including non-recourse project debt), and the costs of such capital are dependent on numerous factors, including: (a) general economic and capital market conditions; (b) credit availability from banks and other financial institutions; (c) investor confidence and the markets in which we conduct operations; (d) our financial performance; (e) our level of indebtedness and compliance with covenants in our debt agreements; and (f) our cash flow.

An increase in interest rates or a reduction in the availability of project debt financing could reduce the number of projects that we are able to finance. If we are unable to raise additional funds when needed, we could be required to delay acquisition and construction of projects, reduce the scope of projects, abandon or sell some or all of our projects or generation facilities, or default on our contractual commitments in the future, any of which could adversely affect our business, financial condition and results of operations.

Our debt securities will be structurally subordinated to any debt of our subsidiaries that are currently outstanding or may be incurred in the future.

We operate our business through, and a majority of our assets are held by, our subsidiaries, including partnerships. Our results of operations and ability to service indebtedness are dependent upon the results of operations of our subsidiaries and the payment of funds by these subsidiaries to TransAlta in the form of loans, dividends or otherwise. Our subsidiaries will not have an obligation to pay amounts due, or make any funds available for payment of, debt securities issued by TransAlta, whether by dividends, interests, loans, advances or other payments. In addition, the payment of dividends and the making of loans, advances and other payments to us by our subsidiaries may be subject to statutory or contractual restrictions.

In the event of the liquidation of any subsidiary, the assets of the subsidiary would be used first to repay the indebtedness of the subsidiary, including trade payables or obligations under any guarantees, prior to being used to pay TransAlta’s indebtedness, including any debt securities issued by TransAlta. Such indebtedness and any other future indebtedness of such subsidiaries would be structurally senior for such subsidiary to any debt securities issued by TransAlta.

Our subsidiaries have financed some investments using non-recourse project financing. Each non-recourse project loan is structured to be repaid out of cash flow provided by the investment. In the event of a default under a financing agreement which is not cured, the lenders would generally have rights to the related assets. In the event of foreclosure after a default, our subsidiary may lose its equity in the asset or may not be entitled to any cash that the asset may generate. Although a default under a project loan will not cause a default with respect to any debt securities issued by TransAlta, it may materially affect our ability to service our outstanding indebtedness.

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A downgrade of our credit ratings could materially and adversely affect us.

Rating agencies regularly evaluate us, basing their ratings of our long-term and short-term debt on a number of factors. There can be no assurance that one or more of our credit ratings and the corresponding outlook will not be changed. Our borrowing costs and ability to raise funds are directly impacted by our credit ratings. Credit ratings may be important to suppliers or counterparties when they seek to engage in certain transactions with us. A credit rating downgrade could potentially impair our ability to enter into arrangements with suppliers or counterparties, to engage in certain transactions, and could limit our access to private and public credit markets and increase the costs of borrowing under our existing credit facilities. A credit rating downgrade could require us to post a material amount of new collateral to our counterparties. For further information on posting collateral in the event of a credit downgrade, please see Note 14 section C. III of our audited consolidated financial statements for the year ended December 31, 2014, which financial statements are incorporated by reference herein. Please also see “Documents Incorporated by Reference.”

Changes in statutory or contractual restrictions that affect our corporate structure may have a material adverse effect on us.

We conduct a significant amount of business through subsidiaries and partnerships. Our ability to meet and service debt obligations is dependent upon the results of operations of our subsidiaries and the payment of funds by our subsidiaries in the form of distributions, loans, dividends, or otherwise. In addition, our subsidiaries may be subject to statutory or contractual restrictions that limit their ability to distribute cash to us.

The power generation industry has certain inherent risks related to worker health and safety and the environment that could cause us to suffer unanticipated expenditures or to incur fines, penalties or other consequences material to its business and operations.

The ownership and operation of our power generation assets carry an inherent risk of liability related to worker health and safety and the environment, including the risk of government imposed orders to remedy unsafe conditions and/or to remediate or otherwise address environmental contamination, potential penalties for contravention of health, safety and environmental laws, licenses, permits and other approvals, and potential civil liability. Compliance with health, safety and environmental laws (and any future changes) and the requirements of licenses, permits and other approvals are expected to remain material to our business. The occurrence of any of these events or any changes, additions to or more rigorous enforcement of, health, safety and environmental laws, licenses, permits or other approvals could have a significant impact on our operations and/or result in additional material expenditures. As a consequence, no assurances can be given that additional environmental and workers’ health and safety issues relating to presently known or unknown matters will not require unanticipated expenditures, or result in fines, penalties or other consequences (including changes to operations) material to our business and operations.

Certain of the contracts to which we are a party require that we provide collateral against our obligations.

We are exposed to risk under certain electricity and natural gas purchase and sale contracts entered into for the purposes of hedges and proprietary trading. The terms and conditions of these contracts require us to provide collateral when the fair value of these contracts is in excess of any credit limits granted by our counterparties and the contract obliges that we provide the collateral. The change in fair value of these contracts occurs due to changes in commodity prices. These contracts include: (i) purchase agreements, when forward commodity prices are less than contracted prices; and (ii) sales agreements, when forward commodity prices exceed contracted prices. Downgrades in our creditworthiness by certain credit rating agencies may decrease the credit limits granted by our counterparties and accordingly increase the amount of collateral that we may have to provide, which could materially adversely affect us.

If counterparties to our contracts are unable to meet their obligations, we may be materially and adversely affected.

If purchasers of our electricity and steam or other contractual counterparties default on their obligations, we may be materially and adversely affected. While we have procedures and controls in place to manage our counterparty

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credit risk prior to entering into contracts, all contracts inherently contain default risk. Moreover, while we seek to monitor trading activities to ensure that the credit limits for counterparties are not exceeded, we cannot guarantee that a party will not default. If counterparties to our contracts are unable to meet their obligations, we could suffer a reduction in revenue which could have a material adverse effect on our business.

We are not able to insure against all potential risks and may become subject to higher insurance premiums.

Our business is exposed to the risks inherent in the construction and operation of electricity generation facilities, such as breakdowns, manufacturing defects, natural disasters, theft, terrorist attacks and sabotage. We are also exposed to environmental risks. We maintain insurance policies, covering usual and customary risks associated with our business, with credit worthy insurance carriers. Our insurance policies, however, do not cover losses as a result of force majeure, natural disasters, terrorist attacks or sabotage, among other things. In addition, we generally do not maintain insurance for certain environmental risks, such as environmental contamination. Our insurance policies are subject to annual review by the respective insurers and may not be renewed at all or on similar or favourable terms. A significant uninsured loss or a loss significantly exceeding the limits of our insurance policies or the failure to renew such insurance policies on similar or favourable terms could have a material adverse effect on our business, financial condition and results of operations.

Our insurance coverage may not be available in the future on commercially reasonable terms or adequate insurance limits may not be available in the market. In addition, the insurance proceeds received for any loss or damage to any of our generation facilities may not be sufficient to permit us to continue to make payments on our debt.

Provision for income taxes may not be sufficient.

Our operations are complex, and the computation of the provision for income taxes involves tax interpretations, regulations, and legislation that are continually changing. In addition, our tax filings are subject to audit by taxation authorities. While we believe that our tax filings have been made in material compliance with all applicable tax interpretations, regulations, and legislation, we cannot guarantee that we will not have disagreements with taxation authorities with respect to our tax filings that could have a material adverse effect on our business.

If we fail to attract and retain key personnel, we could be materially adversely affected.

The loss of any of our key personnel or our inability to attract, train, retain and motivate additional qualified management and other personnel could have a material adverse effect on our business. Competition for these personnel is intense and there can be no assurance that we will be successful in this regard.

If we are unable to successfully negotiate new collective bargaining agreements with our unionized workforce, as required from time to time, we will be adversely affected.

While we believe we have a satisfactory relationship with our unionized employees, we cannot guarantee that we will be able to successfully negotiate or renegotiate our collective bargaining agreements on terms agreeable to TransAlta. We expect to re-negotiate three collective bargaining agreements, involving 115 of our employees, in 2015 and seven collective bargaining agreements representing a total of 691 employees in 2016. Any problems in negotiating these collective bargaining agreements could lead to higher employee costs and a work stoppage or strike, which could have a material adverse effect on us.

Risks relating to TransAlta’s development projects and acquisitions may materially and adversely affect us.

Development projects and acquisitions that we undertake may be subject to execution and capital cost risks, including, but not limited to, risks relating to regulatory approvals, third party opposition, cost escalations, construction delays, shortages of raw materials or skilled labour and capital constraints. The occurrences of these risks could have a material and adverse impact on us, our financial condition, results of operations and cash flows.

Expansion of our business through development projects and acquisitions may place increased demands on our management, operating systems, internal controls and financial and physical resources. In addition, the process of

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integrating acquired businesses or development projects may involve unforeseen difficulties. Failure to successfully manage or integrate any acquired businesses or development projects could have a material adverse impact on us, our financial condition, results of operations and cash flows. Further, we cannot make assurances that we will be successful in integrating any acquisition or that the commercial opportunities or operational synergies of any acquisition will be realized as expected.

We may pursue acquisitions in new markets that are subject to regulation by various foreign governments and regulatory authorities and to the application of foreign laws. Such foreign laws or regulations may not provide for the same type of legal certainty and rights, in connection with our contractual relationships in such countries, as are afforded to us currently, which may adversely affect our ability to receive revenues or enforce our rights in connection with any such foreign operations. In addition, the laws and regulations of some countries may limit our ability to hold a majority interest in some of the projects that we may acquire, thus limiting our ability to control the operation of such projects. Any existing or new operations may also be subject to significant political, economic and financial risks, which vary by country, and may include: (a) changes in government policies or personnel; (b) changes in general economic conditions; (c) restrictions on currency transfer or convertibility; (d) changes in labour relations; (e) political instability and civil unrest; (f) regulatory or other changes in the local electricity market; and (g) breach or repudiation of important contractual undertakings by governmental entities and expropriation and confiscation of assets and facilities for less than fair market value.

With respect to acquisitions, we cannot make assurances that we will identify suitable transactions or that we will have access to sufficient resources, through our credit facilities, the capital markets or otherwise, to pursue and complete any identified acquisition opportunities on a timely basis and at a reasonable cost. Any acquisition that we propose or complete would be subject to normal commercial risks that the transaction may not be completed on the terms negotiated, on time, or at all. An unavoidable level of risk remains regarding potential undisclosed or unknown liabilities relating to any acquisition. The existence of such undisclosed liabilities may have a material adverse impact on our business, financial condition, results of operations and cash flows.

EMPLOYEES

As of December 31, 2014, we had 2,786 active employees, which figure includes full-time, part-time and temporary employees, of which 1,405 were employed in our Generation business, 77 were employed in our Energy Marketing business, 751 were employed at SunHills and the remaining 553 employees were employed in our Corporate segment. Approximately 54 per cent of our employees are represented by labour unions. We are currently a party to 12 different collective bargaining agreements. In 2014, we renewed four of the collective bargaining agreements, one of which was set to expire in 2014 and three of which expired in 2013 but were then ratified in 2014.

CAPITAL STRUCTURE

General

Our authorized share capital consists of an unlimited number of common shares and an unlimited number of first preferred shares, issuable in series. As at February 18, 2015, there were 276,990,304 common shares outstanding and 12,000,000 Series A, 11,000,000 Series C, 9,000,000 Series E and 6,600,000 Series G first preferred shares outstanding.

Common Shares

Each common share of TransAlta Corporation entitles the holder thereof to one vote for each common share held at all meetings of shareholders of the Corporation, except meetings at which only holders of another specified class or series of shares are entitled to vote, to receive dividends if, as and when declared by the Board, subject to prior satisfaction of preferential dividends applicable to any first preferred shares, and to participate rateably in any distribution of our assets upon a liquidation, dissolution or winding up and subject to prior rights and privileges attaching to first preferred shares. The common shares are not convertible and are not entitled to any pre-emptive rights. The common shares are not entitled to cumulative voting.

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First Preferred Shares

We are authorized to issue an unlimited number of first preferred shares, issuable in series and, with respect to each series, the Board is authorized to fix the number of shares comprising the series and determine the designation, rights, privileges, restrictions and conditions attaching to such shares, subject to certain limitations.

The first preferred shares of all series rank senior to all other shares of TransAlta Corporation with respect to priority in payment of dividends and with respect to distribution of assets in the event of liquidation, dissolution or winding up of the Corporation, or a reduction of stated capital. Holders of first preferred shares are entitled to receive cumulative quarterly dividends on the subscription price thereof as and when declared by the Board at the rate established by the Board at the time of issue of shares of a series. No dividends may be declared or paid on any other shares of TransAlta Corporation unless all cumulative dividends accrued upon all outstanding first preferred shares have been paid or declared and set apart. In the event of the liquidation, dissolution or winding up of the Corporation, or a reduction of stated capital, no sum shall be paid or assets distributed to holders of other shares of TransAlta Corporation until the holders of first preferred shares shall have been paid the subscription price of the shares, plus a sum equal to the premium payable on a redemption, plus a sum equal to the arrears of dividends accumulated on the first preferred shares to the date of such liquidation, dissolution, winding up, or reduction of stated capital, as applicable. After payment of such amount, the holders of first preferred shares shall not be entitled to share further in the distribution of our assets.

The Board may include, in the share conditions attaching to a particular series of first preferred shares, certain voting rights effective upon our failing to make payment of six quarterly dividend payments, whether or not consecutive. These voting rights continue for so long as any dividends remain in arrears. These voting rights are the right to one vote for each $25.00 of subscription price on all matters in respect of which shareholders vote, and additionally, the right of all series of first preferred shares, voting as a combined class, to elect two directors of TransAlta if the Board then consists of less than 16 directors, or three directors if the Board consists of 16 or more directors. Otherwise, except as required by law, the holders of first preferred shares shall not be entitled to vote or to receive notice of or attend any meeting of the shareholders of the Corporation.

Subject to the share conditions attaching to any particular series providing to the contrary, we may redeem the first preferred shares of a series, in whole or from time to time in part, at the redemption price applicable to each series and we have the right to acquire any of the first preferred shares of one or more series by purchase for cancellation in the open market or by invitation for tenders at a price not to exceed the redemption price applicable to the series.

Series A Shares

12.0 million Series A rate reset preferred shares were issued on December 10, 2010 with a coupon of 4.60 per cent (“Series A Shares”), for gross proceeds of $300 million. Certain provisions of the Series A Shares are discussed below.

Dividends on Series A Shares

The holders of Series A Shares are entitled to receive, as and when declared by the Board out of moneys of TransAlta properly applicable to the payment of dividends, fixed cumulative preferential cash dividends payable quarterly on the last day of March, June, September and December in each year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day.

For each five-year period after the Initial Fixed Rate Period (each a “Subsequent Fixed Rate Period”), the holders of Series A Shares shall be entitled to receive, as and when declared by the Board, fixed cumulative preferential cash dividends, payable quarterly on the last day of March, June, September and December in each year, in the amount per share determined by multiplying one-quarter of the Annual Fixed Dividend Rate for such Subsequent Fixed Rate Period by $25.00 (less any tax that we are required to deduct and withhold). The Annual Fixed Dividend Rate for the ensuing Subsequent Fixed Rate Period will be determined by TransAlta on the Fixed Rate Calculation Date (30 th day prior to the first day of such Subsequent Fixed Rate Period) and will be equal to the sum of the Government of

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Canada Yield (yield to maturity of a Government of Canada non-callable five year bond) on the Fixed Rate Calculation Date plus a spread of 2.03 per cent. This spread will apply to both the Series A Shares and the Series B Shares described below, and will remain unchanged over the life of the Series A Shares.

Redemption of Series A Shares

The Series A Shares are redeemable by TransAlta, at its option, in whole or in part, on March 31, 2016, and on March 31 in every fifth year thereafter by the payment of an amount in cash for each share to be redeemed equal to $25.00 plus all accrued and unpaid dividends thereon to but excluding the date fixed for redemption (less any tax that we are required to deduct and withhold).

If we give notice to the holders of the Series A Shares of the redemption of all of the Series A Shares, the right of a holder of Series A Shares to convert such Series A Shares shall terminate and we shall not be required to give notice to the registered holders of the Series A Shares of an Annual Fixed Dividend Rate, a Floating Quarterly Dividend Rate or the conversion right of holders of Series A Shares.

Conversion of Series A Shares into Series B Shares

The holders of the Series A Shares have the right to convert all or any of their shares into cumulative redeemable floating rate first preferred shares, Series B of TransAlta (the “Series B Shares”), subject to certain conditions, on March 31, 2016 and on March 31 in every fifth year thereafter. The holders of the Series B Shares will be entitled to receive, as and when declared by the Board, quarterly floating rate cumulative preferential cash dividends payable on the last day of March, June, September and December in each year (each such quarterly dividend period is referred to as a “Quarterly Floating Rate Period”), in the amount per share determined by multiplying the “Floating Quarterly Dividend Rate” (which means, for any Quarterly Floating Rate Period, the annual rate of interest, (expressed as a percentage and rounded to the nearest one hundred-thousandth of one per cent), equal to the sum of the T-Bill Rate (the “T-Bill Rate”) (which means, the average yield expressed as an annual rate on the 90 day Government of Canada treasury bill, as reported by the Bank of Canada, for the most recent treasury bills auction preceding the applicable Floating Rate Calculation Date) on the applicable date and 2.03 per cent) for such Quarterly Floating Rate Period by $25.00 and multiplying that product by a fraction, the numerator of which is the actual number of days in such Quarterly Floating Rate Period and the denominator of which is 365 or 366, depending upon the actual number of days in the applicable year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day. The Floating Quarterly Dividend Rate will be the annual rate of interest equal to the sum of the T-Bill Rate on the applicable Floating Rate Calculation Date plus a spread of 2.03 per cent.

The Series A Shares and Series B Shares are series of shares in the same class. The conversion right entitles holders to elect periodically which of the two series they wish to hold and does not entitle holders to receive a different class or type of securities. Other than the different dividend rights and redemption rights attached thereto, the Series A Shares and Series B Shares are identical in all material respects.

Voting Rights

The holders of the Series A Shares are not entitled to any voting rights or to receive notice of or to attend shareholders’ meetings unless dividends on the Series A Shares are in arrears to the extent of six quarterly dividends, whether or not consecutive. Until all arrears of dividends have been paid, holders of Series A Shares will be entitled to receive notice of and to attend all shareholders’ meetings at which directors are to be elected (other than separate meetings of holders of another class or series of shares) and to one vote in respect of each Series A Share held on all matters in respect of which shareholders vote, and additionally, the right of all series of first preferred shares, voting as a combined class, to elect two directors of the Corporation if the Board then consists of less than 16 directors, or three directors if the Board consists of 16 or more directors. Otherwise, except as required by law, the holders of first preferred shares shall not be entitled to vote or to receive notice of or attend any meeting of the shareholders of the Corporation

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Modification

The provisions attaching to the Series A Shares as a class may be amended with the written approval of all the holders of Series A Shares outstanding or by at least two-thirds of the votes cast at a meeting of the holders of such shares duly called for the purpose and at which a quorum is present.

Series C Shares

11.0 million Series C rate reset preferred shares were issued on November 30, 2011, with a coupon of 4.60 per cent (“Series C Shares”) for gross proceeds of $275 million as discussed in the section entitled “General Development of the Business”. Certain provisions of the Series C Shares are discussed below.

Dividends on Series C Shares

The holders of Series C Shares are entitled to receive, as and when declared by the Board out of moneys of TransAlta properly applicable to the payment of dividends, fixed cumulative preferential cash dividends payable quarterly on the last day of March, June, September and December in each year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day.

For each five-year period after the Initial Fixed Rate Period (each a “Subsequent Fixed Rate Period”), the holders of Series C Shares shall be entitled to receive, as and when declared by the Board, fixed cumulative preferential cash dividends, payable quarterly on the last day of March, June, September and December in each year, in the amount per share determined by multiplying one-quarter of the Annual Fixed Dividend Rate for such Subsequent Fixed Rate Period by $25.00 (less any tax that we are required to deduct and withhold). The Annual Fixed Dividend Rate for the ensuing Subsequent Fixed Rate Period will be determined by TransAlta on the Fixed Rate Calculation Date (30 th day prior to the first day of such Subsequent Fixed Rate Period) and will be equal to the sum of the Government of Canada Yield (yield to maturity of a Government of Canada non-callable five-year bond) on the Fixed Rate Calculation Date plus a spread of 3.10 per cent. This spread will apply to both the Series C Shares and the Series D Shares described below, and will remain unchanged over the life of the Series C Shares.

Redemption of Series C Shares

The Series C Shares are redeemable by TransAlta, at its option, in whole or in part, on June 30, 2017, and on June 30 in every fifth year thereafter by the payment of an amount in cash for each share to be redeemed equal to $25.00 plus all accrued and unpaid dividends thereon to but excluding the date fixed for redemption (less any tax that we are required to deduct and withhold).

If we give notice to the holders of the Series C Shares of the redemption of all of the Series C Shares, the right of a holder of Series C Shares to convert such Series C Shares shall terminate and we shall not be required to give notice to the registered holders of the Series C Shares of an Annual Fixed Dividend Rate, a Floating Quarterly Dividend Rate or the conversion right of holders of Series C Shares.

Conversion of Series C Shares into Series D Shares

The holders of the Series C Shares have the right to convert all or any of their shares into cumulative redeemable floating rate first preferred shares, Series D of TransAlta (the “Series D Shares”), subject to certain conditions, on June 30, 2017 and on June 30 in every fifth year thereafter. The holders of the Series D Shares will be entitled to receive, as and when declared by the Board, quarterly floating rate cumulative preferential cash dividends payable on the last day of March, June, September, and December in each year (each such quarterly dividend period is referred to as a “Quarterly Floating Rate Period”), in the amount per share determined by multiplying the “Floating Quarterly Dividend Rate” (which means, for any Quarterly Floating Rate Period, the annual rate of interest, (expressed as a percentage and rounded to the nearest one hundred-thousandth of one per cent), equal to the sum of the T-Bill Rate on the applicable date and 3.10 per cent) for such Quarterly Floating Rate Period by $25.00 and multiplying that product by a fraction, the numerator of which is the actual number of days in such Quarterly

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Floating Rate Period and the denominator of which is 365 or 366, depending upon the actual number of days in the applicable year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day. The Floating Quarterly Dividend Rate will be the annual rate of interest equal to the sum of the T-Bill Rate on the applicable Floating Rate Calculation Date plus a spread of 3.10 per cent.

The Series C Shares and Series D Shares are series of shares in the same class. The conversion right entitles holders to elect periodically which of the two series they wish to hold and does not entitle holders to receive a different class or type of securities. Other than the different dividend rights and redemption rights attached thereto, the Series C Shares and Series D Shares are identical in all material respects.

Voting Rights

The holders of the Series C Shares are not entitled to any voting rights or to receive notice of or to attend shareholders’ meetings unless dividends on the Series C Shares are in arrears to the extent of six quarterly dividends, whether or not consecutive. Until all arrears of dividends have been paid, holders of Series C Shares will be entitled to receive notice of and to attend all shareholders’ meetings at which directors are to be elected (other than separate meetings of holders of another class or series of shares) and to one vote in respect of each Series C Share held on all matters in respect of which shareholders vote, and additionally, the right of all series of first preferred shares, voting as a combined class, to elect two directors of the Corporation if the Board then consists of less than 16 directors, or three directors if the Board consists of 16 or more directors. Otherwise, except as required by law, the holders of first preferred shares shall not be entitled to vote or to receive notice of or attend any meeting of the shareholders of the Corporation.

Modification

The provisions attaching to the Series C Shares as a class may be amended with the written approval of all the holders of Series C Shares outstanding or by at least two-thirds of the votes cast at a meeting of the holders of such shares duly called for the purpose and at which a quorum is present.

Series E Shares

9.0 million Series E rate reset preferred shares were issued on August 10, 2012 with a coupon of 5.00 per cent (“Series E Shares”) for gross proceeds of $225 million, as discussed in the section entitled “General Development of the Business”. Certain provisions of the Series E Shares are discussed below.

Dividends on Series E Shares

The holders of Series E Shares are entitled to receive, as and when declared by the Board out of moneys of TransAlta properly applicable to the payment of dividends, fixed cumulative preferential cash dividends payable quarterly on the last day of March, June, September, and December in each year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day.

For each five-year period after the Initial Fixed Rate Period (each a “Subsequent Fixed Rate Period”), the holders of Series E Shares shall be entitled to receive, as and when declared by the Board, fixed cumulative preferential cash dividends, payable quarterly on the last day of March, June, September and December in each year, in the amount per share determined by multiplying one-quarter of the Annual Fixed Dividend Rate for such Subsequent Fixed Rate Period by $25.00 (less any tax that we are required to deduct and withhold). The Annual Fixed Dividend Rate for the ensuing Subsequent Fixed Rate Period will be determined by TransAlta Corporation on the Fixed Rate Calculation Date (30 th day prior to the first day of such Subsequent Fixed Rate Period) and will be equal to the sum of the Government of Canada Yield (yield to maturity of a Government of Canada non-callable five-year bond) on the Fixed Rate Calculation Date plus a spread of 3.65 per cent. This spread will apply to both the Series E Shares and the Series F Shares described below, and will remain unchanged over the life of the Series E Shares.

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Redemption of Series E Shares

The Series E Shares are redeemable by TransAlta Corporation, at its option, in whole or in part, on September 30, 2017, and on September 30 in every fifth year thereafter by the payment of an amount of $25.00 in cash for each share to be redeemed plus all accrued and unpaid dividends thereon to but excluding the date fixed for redemption (less any tax that we are required to deduct and withhold).

If we give notice to the holders of the Series E Shares of the redemption of all of the Series E Shares, the right of a holder of Series E Shares to convert such Series E Shares shall terminate and we shall not be required to give notice to the registered holders of the Series E Shares of an Annual Fixed Dividend Rate, a Floating Quarterly Dividend Rate or the conversion right of holders of Series E Shares.

Conversion of Series E Shares into Series F Shares

The holders of the Series E Shares have the right to convert all or any of their shares into cumulative redeemable floating rate first preferred shares, Series F of TransAlta (the “Series F Shares”), subject to certain conditions, on September 30, 2017 and on September 30 in every fifth year thereafter. The holders of the Series F Shares will be entitled to receive, as and when declared by the Board, quarterly floating rate cumulative preferential cash dividends payable on the last day of March, June, September, and December in each year (each such quarterly dividend period is referred to as a “Quarterly Floating Rate Period”), in the amount per share determined by multiplying the “Floating Quarterly Dividend Rate” (which means, for any Quarterly Floating Rate Period, the annual rate of interest, (expressed as a percentage and rounded to the nearest one hundred-thousandth of one per cent), equal to the sum of the T-Bill Rate on the applicable date and 3.65 per cent) for such Quarterly Floating Rate Period by $25.00 and multiplying that product by a fraction, the numerator of which is the actual number of days in such Quarterly Floating Rate Period and the denominator of which is 365 or 366, depending upon the actual number of days in the applicable year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day. The Floating Quarterly Dividend Rate will be the annual rate of interest equal to the sum of the T-Bill Rate on the applicable Floating Rate Calculation Date plus a spread of 3.65 per cent.

The Series E Shares and Series F Shares are series of shares in the same class. The conversion right entitles holders to elect periodically which of the two series they wish to hold and does not entitle holders to receive a different class or type of securities. Other than the different dividend rights and redemption rights attached thereto, the Series E Shares and Series F Shares are identical in all material respects.

Voting Rights

The holders of the Series E Shares are not entitled to any voting rights or to receive notice of or to attend shareholders’ meetings unless dividends on the Series E Shares are in arrears to the extent of six quarterly dividends, whether or not consecutive. Until all arrears of dividends have been paid, holders of Series E Shares will be entitled to receive notice of and to attend all shareholders’ meetings at which directors are to be elected (other than separate meetings of holders of another class or series of shares) and to one vote in respect of each Series E Share held on all matters in respect of which shareholders vote, and additionally, the right of all series of first preferred shares, voting as a combined class, to elect two directors of the Corporation if the Board then consists of less than 16 directors, or three directors if the Board consists of 16 or more directors. Otherwise, except as required by law, the holders of first preferred shares shall not be entitled to vote or to receive notice of or attend any meeting of the shareholders of the Corporation.

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Modification

The provisions attaching to the Series E Shares as a class may be amended with the written approval of all the holders of Series E Shares outstanding or by at least two-thirds of the votes cast at a meeting of the holders of such shares duly called for the purpose and at which a quorum is present.

Series G Shares

6.6 million Series G rate reset preferred shares were issued on August 15, 2014 with a coupon of 5.30 per cent (“Series G Shares”) for gross proceeds of $165 million, as discussed in the section entitled “General Development of the Business”. Certain provisions of the Series G Shares are discussed below.

Dividends on Series G Shares

The holders of Series G Shares are entitled to receive, as and when declared by the Board out of moneys of TransAlta properly applicable to the payment of dividends, fixed cumulative preferential cash dividends payable quarterly on the last day of March, June, September, and December in each year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day.

For each five-year period after the Initial Fixed Rate Period (each a “Subsequent Fixed Rate Period”), the holders of Series G Shares shall be entitled to receive, as and when declared by the Board, fixed cumulative preferential cash dividends, payable quarterly on the last day of March, June, September and December in each year, in the amount per share determined by multiplying one-quarter of the Annual Fixed Dividend Rate for such Subsequent Fixed Rate Period by $25.00 (less any tax that we are required to deduct and withhold). The Annual Fixed Dividend Rate for the ensuing Subsequent Fixed Rate Period will be determined by TransAlta Corporation on the Fixed Rate Calculation Date (30 th day prior to the first day of such Subsequent Fixed Rate Period) and will be equal to the sum of the Government of Canada Yield (yield to maturity of a Government of Canada non-callable five year bond) on the Fixed Rate Calculation Date plus a spread of 3.80 per cent. This spread will apply to both the Series G Shares and the Series H Shares described below, and will remain unchanged over the life of the Series G Shares.

Redemption of Series G Shares

The Series G Shares are redeemable by TransAlta Corporation, at its option, in whole or in part, on September 30, 2019, and on September 30 in every fifth year thereafter by the payment of an amount of $25.00 in cash for each share to be redeemed plus all accrued and unpaid dividends thereon to but excluding the date fixed for redemption (less any tax that we are required to deduct and withhold).

If we give notice to the holders of the Series G Shares of the redemption of all of the Series G Shares, the right of a holder of Series G Shares to convert such Series G Shares shall terminate and we shall not be required to give notice to the registered holders of the Series G Shares of an Annual Fixed Dividend Rate, a Floating Quarterly Dividend Rate or the conversion right of holders of Series G Shares.

Conversion of Series G Shares into Series H Shares

The holders of the Series G Shares have the right to convert all or any of their shares into cumulative redeemable floating rate first preferred shares, Series H of TransAlta (the “Series H Shares”), subject to certain conditions, on September 30, 2019 and on September 30 in every fifth year thereafter. The holders of the Series H Shares will be entitled to receive, as and when declared by the Board, quarterly floating rate cumulative preferential cash dividends payable on the last day of March, June, September, and December in each year (each such quarterly dividend period is referred to as a “Quarterly Floating Rate Period”), in the amount per share determined by multiplying the “Floating Quarterly Dividend Rate” (which means, for any Quarterly Floating Rate Period, the annual rate of interest, (expressed as a percentage and rounded to the nearest one hundred thousandth of one per cent), equal to the sum of the T-Bill Rate on the applicable date and 3.80 per cent) for such Quarterly Floating Rate Period by $25.00 and multiplying that product by a fraction, the numerator of which is the actual number of days in such Quarterly

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Floating Rate Period and the denominator of which is 365 or 366, depending upon the actual number of days in the applicable year (less any tax that we are required to deduct and withhold). If any such date is not a business day, the dividend will be paid on the next succeeding business day. The Floating Quarterly Dividend Rate will be the annual rate of interest equal to the sum of the T-Bill Rate on the applicable Floating Rate Calculation Date plus a spread of 3.80 per cent.

The Series G Shares and Series H Shares are series of shares in the same class. The conversion right entitles holders to elect periodically which of the two series they wish to hold and does not entitle holders to receive a different class or type of securities. Other than the different dividend rights and redemption rights attached thereto, the Series G Shares and Series H Shares are identical in all material respects.

Voting Rights

The holders of Series G Shares are not entitled to any voting rights or to receive notice of or to attend shareholders’ meetings unless dividends on the Series G Shares are in arrears to the extent of six quarterly dividends, whether or not consecutive. Until all arrears of dividends have been paid, holders of Series G Shares will be entitled to receive notice of and to attend all shareholders’ meetings at which directors are to be elected (other than separate meetings of holders of another class or series of shares) and to one vote in respect of each Series G Share held on all matters in respect of which shareholders vote, and additionally, the right of all series of first preferred shares, voting as a combined class, to elect two directors of the Corporation if the Board then consists of less than 16 directors, or three directors if the Board consists of 16 or more directors. Otherwise, except as required by law, the holders of first preferred shares shall not be entitled to vote or to receive notice of or attend any meeting of the shareholders of the Corporation.

Modification

The provisions attaching to the Series G Shares as a class may be amended with the written approval of all the holders of Series G Shares outstanding or by at least two-thirds of the votes cast at a meeting of the holders of such shares duly called for the purpose and at which a quorum is present.

Premium Dividend™, Dividend Reinvestment and Optional Common Share Purchase Plan

On May 8, 2013, the Corporation announced the suspension of the Premium Dividend TM Component of its Plan, following the payment of its quarterly dividend on July 1, 2013. The current Plan provides eligible shareholders of TransAlta with the option to reinvest dividends at a current three per cent discount (may be from zero to five per cent at the discretion of the Board) to the average market price towards the purchase of new shares of TransAlta.

Eligible shareholders enrolled in the Dividend Reinvestment Component are also eligible to purchase new shares at a discount to the average market price under the optional cash payment component (the “OCP Component”) of the Plan by directly investing up to $5,000.00 per quarter. The applicable discount under the OCP Component is also determined from time to time by the Board and is currently set at three per cent.

CREDIT RATINGS

Issuer Rating

The following information relating to our credit ratings is provided as it relates to our financing costs, liquidity and operations. Specifically, credit ratings affect our ability to obtain short-term and long-term financing and the cost of such financing. Additionally, our ability to engage in certain collateralized business activities on a cost effective basis depends on our credit ratings. A reduction in the current rating on our debt by our rating agencies, particularly a downgrade below investment grade ratings, or a negative change in our ratings outlook could adversely affect our cost of financing and access to sources of liquidity and capital. In addition, changes in credit ratings may affect our ability to, and the associated costs of, (i) entering into ordinary course derivative or hedging transactions and may require us to post additional collateral under certain of our contracts, and (ii) entering into and maintaining ordinary course contracts with customers and suppliers on acceptable terms.

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As of December 31, 2014, our issuer rating was BBB- (stable) from S&P, BBB (stable) from DBRS and BBB- (stable) from Fitch.

Senior Unsecured Long-term Debt

As of December 31, 2014, our senior unsecured long-term debt is rated BBB (stable) by DBRS, BBB- (stable) by S&P, Baa3 (negative) by Moody’s and BBB- (stable) by Fitch. The ratings for debt instruments range from a high of AAA to a low of D in the case of DBRS, S&P and Fitch and from a high of Aaa to a low of C in the case of Moody’s.

According to the DBRS rating system, debt securities rated BBB are of adequate credit quality. The capacity for the payment of financial obligations is considered acceptable, but the entity may be vulnerable to future events. “High” or “Low” subcategories indicate the relative standing within a rating category for all rating categories other than AAA and D. DBRS also assigns rating trends of “positive,” “stable,” or “negative” to each of its ratings. The rating trend indicates the direction in which DBRS considers the rating is headed should present tendencies continue, or in some cases, unless challenges are addressed.

According to the S&P rating system, debt securities rated BBB exhibit adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on such obligations than on obligations in the higher rating categories. The ratings from AA to CCC may be modified by the addition of a plus (+) or minus (–) sign to show relative standing within the major rating categories. S&P also assigns a rating outlook to each of its ratings to give investors an understanding of S&P’s opinion regarding the potential direction for the long-term credit rating over the intermediate term.

The Moody’s rating system provides that debt securities rated Baa are subject to moderate credit risk. They are considered medium grade and as such may possess certain speculative characteristics. Numerical modifiers 1, 2 and 3 are applied to each generic rating classification from Aa through Caa, with 1 indicating that the obligation ranks in the higher end of the category, 2 indicating a mid-range ranking and 3 indicating a ranking in the lower end of the category. Moody’s may also assign a rating outlook of positive, negative, stable, or developing. A stable outlook indicates a low likelihood of a rating change over the medium term. A negative, positive, or developing outlook indicates a higher likelihood of a rating change over the medium term.

The Fitch rating system describes a BBB designation as a rating to indicate the current low expectations of default risk occurring. As well, negative changes in circumstances or economic conditions may be more likely to impair this capacity. The modifiers “+” or “-” may be added to Long-Term Issuer Default Ratings between AA and B.

We are focused on maintaining a strong financial position and cash flow coverage ratios to support stable investment grade credit ratings. Our investment grade credit rating, available credit facilities, funds from operations, and our manageable debt maturity profile provide us with financial flexibility. As a result, we can be selective as to if and when we go to the capital markets for funding.

Preferred Shares

Each of the Series A, Series C, Series E and Series G preferred shares have been rated Pfd-3 (stable) by DBRS, and P-3 by S&P. The ratings for preferred shares range from a high of Pfd-1 to a low of D for DBRS and from a high of P-1 to a low of D for S&P.

According to the DBRS rating system, securities rated Pfd-3 are of adequate credit quality. “High” or “low” grades are used to indicate the relative standing within a rating category.

According to the S&P rating system, securities rated P-3 are less vulnerable to nonpayment than other speculative issues. However, the obligor faces major ongoing uncertainties or exposure to adverse business, financial, or economic conditions which could lead to the obligor’s inadequate capacity to meet its financial commitment on the

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obligation. This is the third highest of eight categories under S&P’s Canadian preferred share national rating scale. The ratings from P-1 to -5 may be modified by “high” or “low” grades which indicate relative standing within the major rating categories.

Note Regarding Credit Ratings

Credit ratings are intended to provide investors with an independent measure of credit quality of an issue of securities. The credit ratings accorded to our outstanding securities by S&P, Moody’s, DBRS and Fitch, as applicable, are not recommendations to purchase, hold or sell such securities inasmuch as such ratings do not comment as to market price or suitability for a particular investor. There is no assurance that the ratings will remain in effect for any given period or that a rating will not be revised or withdrawn entirely by S&P, Moody’s, DBRS or Fitch in the future if, in its judgement, circumstances so warrant.

We have paid fees for rating services to S&P, DBRS and Fitch, but have not paid fees for other rating agency services during the last two years. We have also paid Moody’s rating services fees and fees for certain other services provided to the Corporation in 2014.

DIVIDENDS

Common Shares

Dividends on our common shares are at the discretion of the Board. In determining the payment and level of future dividends, the Board considers our financial performance, our results of operations, cash flow and needs, with respect to financing our ongoing operations and growth, balanced against returning capital to shareholders. The Board continues to focus on building sustainable earnings and cash flow growth.

TransAlta has declared and paid the following dividends per share on its outstanding common shares for the past three years:

Period |  |  |  | Dividend per Common Share |
2012 |  | First Quarter |  | $0.29 |
|  | Second Quarter |  | $0.29 |
|  | Third Quarter |  | $0.29 |
|  | Fourth Quarter |  | $0.29 |
2013 |  | First Quarter |  | $0.29 |
|  | Second Quarter |  | $0.29 |
|  | Third Quarter |  | $0.29 |
|  | Fourth Quarter |  | $0.29 |
2014 |  | First Quarter |  | $0.29 |
|  | Second Quarter |  | $0.18 |
|  | Third Quarter |  | $0.18 |
|  | Fourth Quarter |  | $0.18 |

On January 23, 2015, the Board declared a cash dividend of $0.18 per common share, payable on April 1, 2015 to shareholders of record on March 2, 2015. This dividend is in line with the resized dividend that was announced in February 2014 of $0.72 per common share on an annualized basis.

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Series A Shares

Period |  |  |  | Dividend per Series A Preferred Share |
2012 |  | First Quarter |  | $0.2875 |
|  | Second Quarter |  | $0.2875 |
|  | Third Quarter |  | $0.2875 |
|  | Fourth Quarter |  | $0.2875 |
2013 |  | First Quarter |  | $0.2875 |
|  | Second Quarter |  | $0.2875 |
|  | Third Quarter |  | $0.2875 |
|  | Fourth Quarter |  | $0.2875 |
2014 |  | First Quarter |  | $0.2875 |
|  | Second Quarter |  | $0.2875 |
|  | Third Quarter |  | $0.2875 |
|  | Fourth Quarter |  | $0.2875 |

On January 23, 2015, the Board declared a cash dividend of $0.2875 per Series A Share, payable on March 31, 2015 to shareholders of record on March 2, 2015.

Series C Shares

Period |  |  |  | Dividend per Series C Preferred Share |
2012 |  | First Quarter(1) |  | $0.3844 |
|  | Second Quarter |  | $0.2875 |
|  | Third Quarter |  | $0.2875 |
|  | Fourth Quarter |  | $0.2875 |
2013 |  | First Quarter |  | $0.2875 |
|  | Second Quarter |  | $0.2875 |
|  | Third Quarter |  | $0.2875 |
|  | Fourth Quarter |  | $0.2875 |
2014 |  | First Quarter |  | $0.2875 |
|  | Second Quarter |  | $0.2875 |
|  | Third Quarter |  | $0.2875 |
|  | Fourth Quarter |  | $0.2875 |

Note:

(1) On January 25, 2012 the Board approved an initial dividend of $0.3844 per Series C Share for the period from issuance on November 29, 2011 to March 31, 2012.

On January 23, 2015, the Board declared a cash dividend of $0.2875 per Series C Share, payable on March 31, 2015 to shareholders of record on March 2, 2015.

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Series E Shares

Period |  |  |  | Dividend per Series E Preferred Share |
2012 |  | Fourth Quarter(1) |  | $0.4897 |
2013 |  | First Quarter |  | $0.3125 |
|  | Second Quarter |  | $0.3125 |
|  | Third Quarter |  | $0.3125 |
|  | Fourth Quarter |  | $0.3125 |
2014 |  | First Quarter |  | $0.3125 |
|  | Second Quarter |  | $0.3125 |
|  | Third Quarter |  | $0.3125 |
|  | Fourth Quarter |  | $0.3125 |

Note:

(1) On October 24, 2012, the Board approved an initial dividend of $0.4897 per Series E Share for the period from issuance on August 10, 2012 to December 31, 2012.

On January 23, 2015, the Board declared a cash dividend of $0.3125 per Series E Share, payable on March 31, 2015 to shareholders of record on March 2, 2015.

Series G Shares

Period |  |  |  | Dividend per Series G Preferred Share |
2014 |  | Fourth Quarter(1) |  | $0.501 |

Note:

(1) On October 29, 2014, the Board approved an initial dividend of $0.501 per Series G Share for the period from issuance on August 15, 2014 to December 31, 2014.

On January 23, 2015, the Board declared a cash dividend of $0.33125 per Series G Share, payable on March 31, 2015 to shareholders of record on March 2, 2015.

MARKET FOR SECURITIES

Common Shares

Our common shares are listed on the Toronto Stock Exchange (the “TSX”) under the symbol “TA” and the New York Stock Exchange (the “NYSE”) under the symbol “TAC”. The following table sets forth the reported high and low trading prices and trading volumes of our common shares as reported by the TSX for the periods indicated:

|  | Price ($) |  |  |
Month |  | High |  | Low |  | Volume |
2014 |  |  |  |  |  |  |
January |  | 14.66 |  | 13.41 |  | 14,621,490 |
February |  | 14.97 |  | 12.43 |  | 30,265,151 |
March |  | 13.12 |  | 12.51 |  | 18,036,710 |
April |  | 13.57 |  | 12.60 |  | 16,589,651 |
May |  | 13.55 |  | 12.90 |  | 14,648,189 |
June |  | 13.09 |  | 12.63 |  | 10,949,642 |
July |  | 13.21 |  | 12.32 |  | 10,573,315 |
August |  | 12.94 |  | 12.24 |  | 8,545,483 |
September |  | 12.54 |  | 11.45 |  | 16,923,510 |

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|  | Price ($) |  |  |
Month |  | High |  | Low |  | Volume |
October |  | 11.88 |  | 10.54 |  | 17,870,362 |
November |  | 11.68 |  | 10.40 |  | 19,280,760 |
December |  | 11.34 |  | 9.63 |  | 25,999,048 |
2015 |  |  |  |  |  |  |
January |  | 11.26 |  | 10.46 |  | 14,756,657 |
February 1-18 |  | 11.40 |  | 10.74 |  | 7,467,706 |

Series A Shares

Our Series A Shares are listed on the TSX under the symbol “TA.PR.D”.

Date(s) of Issuance |  | Number of Securities |  | Issue Price per Security |  | Description of Transaction |
December 10, 2010(1) |  | 12,000,000 Series A Shares |  | $25.00 |  | Public Offering |

Note:

(1) Series A Shares were issued pursuant to a public offering in a prospectus supplement dated December 3, 2010.

|  | Price ($) |  |  |
Month |  | High |  | Low |  | Volume |
2014 |  |  |  |  |  |  |
January |  | 17.92 |  | 16.75 |  | 351,742 |
February |  | 17.30 |  | 16.42 |  | 234,210 |
March |  | 16.87 |  | 16.25 |  | 306,388 |
April |  | 18.62 |  | 16.74 |  | 432,693 |
May |  | 19.92 |  | 18.68 |  | 385,453 |
June |  | 19.24 |  | 18.65 |  | 168,442 |
July |  | 19.25 |  | 18.77 |  | 229,648 |
August |  | 19.00 |  | 18.38 |  | 159,954 |
September |  | 18.70 |  | 16.79 |  | 209,136 |
October |  | 17.19 |  | 15.87 |  | 507,516 |
November |  | 15.90 |  | 15.40 |  | 451,063 |
December |  | 15.69 |  | 14.26 |  | 748,336 |
2015 |  |  |  |  |  |  |
January |  | 15.24 |  | 13.86 |  | 172,295 |
February 1-18 |  | 14.30 |  | 12.25 |  | 226,385 |

Series C Shares

Our Series C Shares are listed on the TSX under the symbol “TA.PR.F”.

Date(s) of Issuance |  | Number of Securities |  | Issue Price per Security |  | Description of Transaction |
November 30, 2011(1) |  | 11,000,000 Series C Shares |  | $25.00 |  | Public Offering |

Note:

(1) Series C Shares were issued pursuant to a public offering in a prospectus supplement dated November 23, 2011.

|  | Price ($) |  |  |
Month |  | High |  | Low |  | Volume |
2014 |  |  |  |  |  |  |
January |  | 20.56 |  | 19.00 |  | 385,319 |
February |  | 20.50 |  | 19.80 |  | 212,813 |
March |  | 20.29 |  | 19.72 |  | 219,370 |
April |  | 21.65 |  | 19.97 |  | 212,068 |
May |  | 22.40 |  | 21.49 |  | 420,108 |
June |  | 22.14 |  | 21.20 |  | 376,039 |
July |  | 22.40 |  | 22.00 |  | 218,159 |

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|  | Price ($) |  |  |
Month |  | High |  | Low |  | Volume |
August |  | 22.33 |  | 21.40 |  | 187,935 |
September |  | 21.68 |  | 21.15 |  | 137,610 |
October |  | 21.22 |  | 19.44 |  | 162,271 |
November |  | 19.98 |  | 18.94 |  | 276,397 |
December |  | 19.46 |  | 17.40 |  | 393,321 |
2015 |  |  |  |  |  |  |
January |  | 19.25 |  | 17.45 |  | 152,810 |
February 1-18 |  | 17.99 |  | 17.05 |  | 88.292 |

Series E Shares

Our Series E Shares are listed on the TSX under the symbol “TA.PR.H”.

Date(s) of Issuance |  | Number of Securities |  | Issue Price per Security |  | Description of Transaction |
August 10, 2012(1) |  | 9,000,000 Series E Shares |  | $25.00 |  | Public Offering |

Note:

(1) Series E Shares were issued pursuant to a public offering in a prospectus supplement dated August 3, 2012.

|  | Price ($) |  |  |
Month |  | High |  | Low |  | Volume |
2014 |  |  |  |  |  |  |
January |  | 23.19 |  | 22.10 |  | 127,288 |
February |  | 22.95 |  | 22.20 |  | 147,505 |
March |  | 22.73 |  | 22.32 |  | 121,986 |
April |  | 23.25 |  | 22.40 |  | 134,548 |
May |  | 24.35 |  | 22.88 |  | 251,097 |
June |  | 24.12 |  | 23.64 |  | 244,358 |
July |  | 24.39 |  | 23.82 |  | 155,720 |
August |  | 24.49 |  | 23.50 |  | 123,315 |
September |  | 23.84 |  | 22.85 |  | 126,887 |
October |  | 23.42 |  | 21.77 |  | 144,307 |
November |  | 22.27 |  | 21.33 |  | 168,885 |
December |  | 21.54 |  | 19.49 |  | 466,089 |
2015 |  |  |  |  |  |  |
January |  | 21.60 |  | 19.30 |  | 144,409 |
February 1-18 |  | 19.94 |  | 18.85 |  | 134,319 |

Series G Shares

Our Series G Shares are listed on the TSX under the symbol “TA.PR.J”.

Date(s) of Issuance |  | Number of Securities |  | Issue Price per Security |  | Description of Transaction |
August 15, 2014(1) |  | 6,600,000 Series G Shares |  | $25.00 |  | Public Offering |

Note:

(1) Series G Shares were issued pursuant to a public offering in a prospectus supplement dated August 8, 2014.

|  | Price ($) |  |
Month |  | High |  | Low |  | Volume
2014 |  |  |  |  |  |
August |  | 24.84 |  | 24.60 |  | 644,122
September |  | 24.90 |  | 24.17 |  | 207,943
October |  | 24.75 |  | 21.91 |  | 201,838

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|  | Price ($) |  |
Month |  | High |  | Low |  | Volume
November |  | 23.23 |  | 22.05 |  | 179,033
December |  | 22.34 |  | 20.20 |  | 451,547
2015 |  |  |  |  |  |
January |  | 22.34 |  | 20.10 |  | 164,710
February 1-18 |  | 21.90 |  | 20.33 |  | 103,280

DIRECTORS AND OFFICERS

The name, province or state and country of residence of each of our directors as at February 18, 2015, their respective position and office and their respective principal occupation during the five preceding years, are set out below. The year in which each director was appointed to serve to the Board is also set out below. Each director is appointed to serve until the next annual meeting of TransAlta or until his or her successor is elected or appointed.

Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
William D. Anderson Ontario, Canada |  | 2003 |  | Mr. Anderson is a corporate director and has had a career as a business leader in Canada spanning over thirty years. He was President of BCE Ventures (a subsidiary of BCE Inc.) from 2001 to 2005 (telecommunications) and prior to that, Chief Financial Officer (“CFO”) of BCE Inc., Bell Canada Inc. and of Bell Cablemedia plc (telecommunications). As President of BCE Ventures, he was responsible for a number of significant operating companies as well as being CEO of Bell Canada International Inc. In his CFO roles, Mr. Anderson was responsible for all financial operations of the respective companies and executed numerous debt and equity financings, corporate acquisition and disposition transactions as well as corporate and operational restructurings. He was also in public practice for nearly twenty years with the accounting firm KPMG LLP, where he was a partner for eleven years. Mr. Anderson is currently the Chair of the Board of Directors of Gildan Activewear Inc. and a director of Sun Life Financial Inc. Mr. Anderson is a past director of BCE Emergis Inc., Bell Cablemedia plc, Bell Canada International Inc., CGI Group Inc., Four Seasons Hotels Inc., Sears Canada Inc., Videotron Holdings plc. and Nordion Inc. (formerly MDS Inc.). Mr. Anderson holds a bachelor in business administration from the University of Western Ontario and is a Fellow of the Chartered Professional Accountants of Ontario and the Institute of Corporate Directors. Member of the Audit and Risk Committee and the Governance and Environment Committee of the Board.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
John P. Dielwart Alberta, Canada |  | 2014 |  | Mr. Dielwart was formerly Chief Executive Officer of ARC Resources Ltd. which owns and operates oil and gas properties in Western Canada. He oversaw the growth of ARC Resources Ltd. from start-up in 1996 to a corporation with a market capitalization of approximately $10 billion. After his retirement from ARC Resources Ltd. on January 1, 2013, Mr. Dielwart re-joined ARC Financial Corp. as Vice-Chairman. ARC Financial Corp. is Canada’s leading energy focused private equity manager with $3.7 billion of capital under management. Mr. Dielwart provides leadership support for the executive team in the areas of internal governance and investment decision-making. With his extensive background in creating, building and leading one of Canada’s most successful oil and gas companies, mentorship of ARC Financial Corp. employees as well as management of its investee companies is a primary responsibility. He is a member of ARC Financial Corp.’s Investment and Strategy committees, and currently represents ARC Financial Corp. on the board of Modern Resources Ltd. and Aspenleaf Energy Limited. Prior to joining ARC Financial Corp. in 1994, Mr. Dielwart spent 12 years with a major Calgary based oil and natural gas engineering consulting firm, as senior vice-president and a director, where he gained extensive technical knowledge of oil and natural gas properties in western Canada. Mr. Dielwart also spent the first five years of his career with a multinational oil and gas company. Mr. Dielwart is currently a director of ARC Resources Ltd., Denbury Resources Inc. and Tesco Corporation. Mr. Dielwart has a Bachelor of Science with Distinction (Civil Engineering) degree from the University of Calgary. He is a member of the Association of Professional Engineers and Geoscientists of Alberta (APEGA) and is a Past-Chairman of the Board of Governors of the Canadian Association of Petroleum Producers (CAPP). Member of the Audit and Risk Committee and the Governance and Environment Committee of the Board.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
Timothy W. Faithfull Oxford, U.K. |  | 2003 |  | Mr. Faithfull is a 36-year veteran of Royal Dutch/Shell plc (energy), where he held diverse international roles principally in oil products and LNG project development. As President and CEO of Shell Canada Limited, he was responsible for bringing the $6 billion Athabasca Oil Sands Project on line in 2003, the first fully integrated oil sands venture in 25 years. Mr. Faithfull has extensive experience with commodity exposure and risk management, the result of his time directing the global crude oil trading operations of Shell International Trading and Shipping Company from 1993 to 1996. He was Chairman and CEO of Shell Eastern Petroleum in Singapore from 1996 to 1999, including Shell’s main refinery and oil products trading for Asia Pacific. During his time in Singapore, he was a director of DBS Bank and the Port of Singapore Authority. He was a trustee of the main Singapore Arts/Theatre complex. In Calgary, he served on the board of the Calgary Health Trust and the Epcor Arts Centre. In the U.K., Mr. Faithfull is a director of Shell Pension Trust Limited, where he chairs the Technical Committee. He is Chairman of the trustees of Starehe UK, and a trustee of Canada UK Colloquium, all non-public entities. He serves on the Committee to Review Donations of the University of Oxford. Mr. Faithfull is also a director of ICE Futures Europe and LIFFE Administration and Management as well as a director of Canadian Natural Resources Limited. He is a past director of Enerflex Systems Income Fund, Canadian Pacific Railway, AMEC plc. and AMEC plc. Mr. Faithfull holds a Master of Arts from the University of Oxford (Philosophy, Politics and Economics) and is a Distinguished Friend of the University of Oxford. Chair of the Human Resources Committee of the Board.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
Dawn L. Farrell Alberta, Canada |  | 2012 |  | Mrs. Farrell became President and CEO of TransAlta Corporation on January 2, 2012. Prior to her appointment, she served as Chief Operating Officer from 2009 to 2011 and as Executive Vice-President, Commercial Operations and Development from 2008 to 2009. Mrs. Farrell has over 30 years of experience in the electric energy industry, holding roles at TransAlta and BC Hydro. She has served as Executive Vice-President, Commercial Operations and Development; Executive Vice-President, Corporate Development; Executive Vice-President, Independent Power Projects; and Vice-President, Energy Marketing and IPP Development at TransAlta Corporation. From 2003 to 2006, Mrs. Farrell served as Executive Vice-President, Generation at BC Hydro. In 2006, she was appointed Executive Vice-President Engineering, Aboriginal Relations and Generation. Mrs. Farrell sits on the board of directors of The Conference Board of Canada and the Canadian Council of Chief Executives. Her past boards include the Calgary Stampede, the Mount Royal College Board of Governors, Fording Coal Income Fund, New Relationship Trust Fund, Mount Royal College Foundation and Vision Quest Windelectric. Mrs. Farrell holds a Bachelor of Commerce with a major in Finance and a Master’s degree in Economics from the University of Calgary. She has also attended the Advanced Management Program at Harvard University.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
Alan J. Fohrer California, U.S.A. |  | 2013 |  | Mr. Fohrer is a corporate director. Prior thereto, he was Chairman and CEO of Southern California Edison Company, a subsidiary of Edison International (“Edison”) and one of the largest electric utilities in the United States. He was elected CEO in 2002 and Chairman in 2007. In 2000, Mr. Fohrer was elected as President and Chief Executive Officer of Edison Mission Energy (“EME”), a subsidiary of Edison that owns and operates independent power facilities. During his tenure at EME, Mr. Fohrer restructured a number of the international projects, which enhanced the value of the assets sold in subsequent years. Mr. Fohrer also served as Executive Vice-President, Treasurer and Chief Financial Officer of both Edison and SCE from 1995 to 1999. After 37 years with Edison, Mr. Fohrer retired in December 2010. Mr. Fohrer currently sits on the boards of PNM Resources, Inc., a publicly held energy holding company, MWH Global, Inc., a privately held global engineering and construction company focused on water and waste water projects, Osmose Utilities Services, Inc., a privately held company providing services to utilities, Blue Shield of California, a non-profit health insurance provider, and Synagro, a waste management company. Mr. Fohrer has served on boards of directors of the Institute of Nuclear Power Operations, the California Chamber of Commerce, and Duratek, Inc., a publicly held nuclear services company. He is also a member of the Viterbi School of Engineering Board of Councilors for the University of Southern California and Chair of the California Science Centre Foundation. Mr. Fohrer holds a Master of Science in Civil Engineering from the University of Southern California as well as a Master of Business Administration from California State University. Member of the Audit and Risk Committee and the Governance and Environment Committee of the Board.
Amb. Gordon D. Giffin(2) Georgia, U.S.A. |  | 2002 |  | Ambassador Giffin is Senior Partner of the law firm of McKenna Long & Aldridge, where he maintains offices in Washington, D.C. and Atlanta. His practice focuses on international transactions related to trade, energy and public policy. He has been engaged in the practice of law or government service for more than 40 years. He served as the United States Ambassador to Canada with responsibility for managing Canada/U.S. bilateral relations, including energy and environmental policy from August 1997 to April 2001. Prior to that, he served as Chief Counsel and Legislative Director to United States Senator Sam Nunn, with responsibility for the legal and legislative operations of the office. Ambassador Giffin’s professional career has consisted of two distinct paths – law practice and public service. He has spent three decades as an attorney in the energy industry as an advisor, trying multiple energy regulatory cases before state and federal tribunals and courts, and handling transactions including mergers and acquisitions. During a decade in public service he was a senior attorney and advisor in the United States Senate where, among other matters, he worked on major energy public policy initiatives. During his four years as United States Ambassador to Canada, he was CEO of a large government enterprise with in excess of a thousand people across Canada. His substantive responsibilities included the entire array of policy matters in the Canada-U.S. context including energy policy. He has substantial experience in dealing with issues at the intersection of industry and public policy. Since leaving public office, he resumed his continental law practice and remains actively engaged in public policy initiatives through the Council on Foreign Relations and the Tri-Lateral Commission. Ambassador Giffin currently is a director of Canadian Imperial Bank of Commerce, Canadian National Railway Company, Canadian Natural Resources Limited, Just Energy Group Inc. and Element Financial Corporation. Ambassador Giffin holds a Bachelor of Arts from Duke University and a juris doctorate from Emory University School of Law. Chair of the Board.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
P. Thomas Jenkins Alberta, Canada |  | 2014 |  | Mr. Jenkins has been active for more than 30 years in innovation and economic development in both the private and public sectors. He is currently the Chairman of the Board of Open Text Corporation, a multinational enterprise software firm. He was recently appointed Chancellor of the University of Waterloo. He has served as a director of Open Text Corporation since 1994 and its Chairman since 1998. From 1994 to 2005, Mr. Jenkins was President and Chief Executive Officer, and then from 2005 to 2013, Executive Chairman and Chief Strategy Officer of Open Text Corporation. Prior thereto, he was employed in technical and managerial capacities at a variety of technology companies. Mr. Jenkins is currently a director of Thomson Reuters Corporation and Manulife Financial Corporation. He is also a director of the C.D. Howe Institute, and a director of the Canadian Council of Chief Executives. Mr. Jenkins was also a member of the board of BMC Software, Inc., a software corporation based in Houston, Texas. Mr. Jenkins received an M.B.A. from Schulich School of Business at York University, an M.A.Sc. from the University of Toronto and a B.Eng. & Mgt. from McMaster University. Mr. Jenkins received an honorary doctorate of laws from the University of Waterloo and an honorary doctorate of Military Science from the Royal Military College of Canada. He is a recipient of the 2009 Ontario Entrepreneur of the Year, the 2010 McMaster Engineering L.W. Shemilt Distinguished Alumni Award and the Schulich School of Business 2012 Outstanding Executive Leadership award. He is a Fellow of the Canadian Academy of Engineering. Mr. Jenkins was awarded the Canadian Forces Decoration and the Queen’s Diamond Jubilee Medal. Mr. Jenkins is an Officer of the Order of Canada. Member of the Audit and Risk Committee of the Board.
C. Kent Jespersen(3) Alberta, Canada |  | 2004 |  | Mr. Jespersen is a corporate director and has had a career and held executive positions in the oil and gas industry for over thirty years. He held senior executive positions with NOVA Corporation of Alberta, Foothills Pipe Lines Ltd. and Husky Oil Limited before assuming the presidency of Foothills Pipe Lines Ltd. and later, NOVA Gas International Ltd. (“NOVA”). At NOVA, he led the non-regulated energy services business (including energy trading and marketing) and all international activities. Mr. Jespersen is also the Chair and CEO of La Jolla Resources International Ltd. (advisory and investments). Mr. Jespersen holds a Bachelor of Science in Education and a Master of Science in Education from the University of Oregon. Member of the Human Resources Committee of the Board.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
Michael M. Kanovsky Alberta, Canada |  | 2004 |  | Mr. Kanovsky is a professional engineer. He co-founded Northstar Energy Corporation (“Northstar”) with initial capital of $400,000 and helped build this entity into an oil and gas producer that was sold to Devon Energy Corporation for approximately $600 million in 1998. During this period, Mr. Kanovsky was responsible for strategy and finance as well as merger and acquisition activity. He initiated Northstar’s entry into electrical cogeneration through its wholly-owned power subsidiary, Powerlink Corporation (“Powerlink”). Powerlink developed one of the first independent power producer (IPP) gas-fired co-generation plants in Ontario and also internationally. In 1997, he founded Bonavista Energy Corporation (previously Bonavista Energy Trust), which has grown to a present day market capitalization of approximately $4.5 billion. Mr. Kanovsky holds a Bachelor of Science in Mechanical Engineering from Queen’s University as well as a Master of Business Administration from Richard Ivey School of Business at Western University. Chair of the Governance and Environment Committee.
Karen E. Maidment Ontario, Canada |  | 2010 |  | Ms. Maidment is a seasoned senior executive and is a corporate director. She was Chief Financial and Administrative Officer (“CFAO”) of BMO Financial Group (“BMO”) from 2007 to 2009. Prior to that, she was Senior Executive Vice-President and CFO from 2003 to 2007 and Executive Vice-President and CFO of BMO from 2000 to 2003. As CFO of BMO, she was responsible for all global finance operations, risk management, legal and compliance, mergers and acquisitions as well as communications. Prior to that, Ms. Maidment held several executive positions with Clarica Life Insurance Company from 1988 to 2000, including CFO. She also led the insurance industry group, working with government, to develop regulations and framework to convert Canada’s major insurers from mutual to public companies. Ms. Maidment is a past director of Harris Bank, BMO Nesbitt Burns, where she was also Chair of the Audit Committee, Bank of Montreal Pension Fund, Mutual Trustco, MCAP Financial and The Mutual Group (U.S.). She is a member of the Princess Margaret Hospital Foundation Board. Ms. Maidment holds a Bachelor of Commerce from McMaster University. She is a Chartered Professional Accountant, a Chartered Accountant and is a Fellow of the Chartered Professioanl Accountants of Ontario. Chair of the Audit and Risk Committee

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
Yakout Mansour California, U.S.A. |  | 2011 |  | Mr. Mansour is a corporate director and has over 40 years of experience as both a professional engineer and executive in the electric utility business in Canada, the United States, and abroad. He retired as President and CEO of the California Independent System Operator Corporation (“CAISO”) in 2011, a position he had held since 2005. CAISO is responsible for operating and controlling 80 per cent of the California electric grid, designing and operating the California electricity market, and for settlements of over $8 billion annually. Under Mr. Mansour’s leadership, CAISO established the market and technical foundation to accommodate one of the most aggressive renewable portfolio standards in the world. Prior to that, Mr. Mansour served in senior executive roles at BC Hydro and British Columbia Transmission Corporation where he was responsible for Operation, Asset Management, and Inter-Utility Affairs of the electric grid. A Professional Engineer and a Fellow of the Institute of Electrical and Electronics Engineers, Mr. Mansour has authored and co-authored numerous publications. He is recognized internationally in the field of Power Engineering and received several distinguished awards for his contributions to the industry. In 2009, Mr. Mansour was named to the US Department of Energy Electricity Advisory Committee as a vice chair. He also served on the various committees of the North American Electric Reliability Corporation and its predecessor organization, CEGRE, the Transmission Council of the Canadian Electric Association, and the Board of Directors of the Electric Power Research Institute. Mr. Mansour holds a Bachelor of Science in Electrical Engineering from the University of Alexandria and a Master of Science from the University of Calgary. Member of the Audit and Risk Committee of the Board.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
Georgia Nelson(4) Illinois, U.S.A. |  | 2014 |  | Ms. Nelson is President and CEO of PTI Resources, LLC, an independent consulting firm established in 2005. Ms. Nelson has had a 35-year career in the power generation industry, serving in various senior executive capacities for Edison International and its subsidiaries between 1971 and 2005. She was President of Midwest Generation Edison Mission Energy from 1999 to her retirement in 2005 and General Manager of EME Americas from 2002 to 2005. Her business responsibilities included management of regulated and unregulated power operations and a large energy trading subsidiary as well as the construction and operation of power generation projects in the United States, Puerto Rico, the United Kingdom, Turkey, Thailand, Indonesia, Australia and Italy. Ms. Nelson has extensive experience in international business negotiations, environmental policy matters and human resources. Ms. Nelson is currently a director of Cummins Inc., Ball Corporation, and Sims Metal Management Ltd. She is also a director of CH2MHILL Corporation, a privately held company. Ms. Nelson is a past director of Nicor, Inc. Ms. Nelson is a member of the Executive Committee of the National Coal Council since 2000 and served as Chair from 2006-2008. She serves on the advisory committee of the Center for Executive Women at Northwestern University and is a frequent lecturer at Northwestern University’s Kellogg School of Management on topics related to leadership and governance. Ms. Nelson was named to the 2012 National Association of Corporate Directors (“NACO”) Directorship 100. She is an NACO Board Fellow. Ms. Nelson holds a Bachelor of Science form Pepperdine University and a Master of Business Administration from the University of Southern California. Member of the Human Resources Committee of the Board.

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Name, Province (State) and Country of Residence(1) |  | Year first became Director |  | Principal Occupation
Dr. Martha C. Piper British Columbia, Canada |  | 2006 |  | Dr. Piper is a corporate director and was President and Vice-Chancellor of the University of British Columbia (“UBC”) from 1997 to 2006 (education). Prior to her appointment at UBC, she served as Vice-President, Research at the University of Alberta. She served on the boards of the Alberta Research Council, the Conference Board of Canada and the Centre of Frontier Engineering Research. Dr. Piper was also appointed by the Prime Minister of Canada to the Advisory Council on Science and Technology and served as Chair of the Board of the National Institute for Nanotechnology. Dr. Piper sits on the boards of the Dalai Lama Centre for Peace & Education, CARE Canada and the Canadian Stem Cell Foundation, all non-public entities. Dr. Piper holds a Bachelor of Science in Physical Therapy from the University of Michigan, a Master of Arts in Child Development from the University of Connecticut and a Doctorate of Philosophy in Epidemiology and Biostatistics from McGill University. Dr. Piper is an Officer of the Order of Canada and a recipient of the Order of British Columbia. Member of the Governance and Environment Committee and the Human Resources Committee of the Board.

Notes:

(1) The following directors are Canadian residents: William D. Anderson, John P. Dielwart, Dawn L. Farrell, P. Thomas Jenkins, C. Kent Jespersen, Michael M. Kanovsky, Karen E. Maidment and Martha C. Piper.

(2) Mr. Giffin was a director of AbitibiBowater Inc. (“Abitibi”) from October 29, 2007 until his resignation on January 22, 2009. In April 2009, Abitibi and certain of its U.S. and Canadian subsidiaries filed voluntary petitions in the United States Bankruptcy Court for the District of Delaware for relief under the provisions of Chapter 11 and Chapter 15 of the United States Bankruptcy Code, as amended, and sought creditor protection under the Companies’ Creditors Arrangement Act (Canada) (the “CCAA”) with the Superior Court of Québec in Canada. On September 14, 2010, Abitibi announced that it had received approval for its plan of reorganization from unsecured creditors under the CCAA in Canada. On September 21, 2010, Abitibi announced it had received the necessary creditor approval for its plan of reorganization under Chapter 11 of the U.S. Bankruptcy Code. On December 9, 2010, Abitibi announced that it had successfully completed its reorganization and emerged from creditor protection under the CCAA in Canada and Chapter 11 of the U.S. Bankruptcy Code.

(3) Mr. Jespersen resigned from the Board of Directors of CCR Technologies Ltd. (“CCR”) in February 2010. CCR filed with the Court of Queen’s Bench of Alberta a proposal dated December 1, 2010 pursuant to provisions of Part III Division I of the Bankruptcy and Insolvency Act to restructure and reorganize the financial affairs of CCR, to compromise the claims of the unsecured creditors, restructure the shares of CCR, and to allow it to conduct a restructuring and “rightsizing” of its operations on a going concern basis. This proposal was approved by the unsecured creditors on December 22, 2010 and by the Court on January 13, 2011. The Alberta Securities Commission issued a variation order dated February 14, 2011 to partially revoke its cease trade order to permit the implementation of the proposal which was subsequently implemented.

(4) Ms. Nelson was a director of Tower International (“Tower”) from 2000 to 2007. In February 2005, Tower began a voluntarily reorganization under Chapter 11 of the United States Bankruptcy Code. In July 2007, Tower completed the sale of substantially all of its assets to Tower Automotive, LLC, an affiliate of Cerberus Capital Management, L.P., and emerged from bankruptcy court protection.

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Officers

The name, province or state and country of residence of each of our officers as at February 18, 2015, their respective position and office and their respective principal occupation during the five preceding years, are set out below.

Name |  | Principal Occupation |  | Residence
Dawn L. Farrell |  | President and Chief Executive Officer |  | Alberta, Canada
Wayne Collins |  | Executive Vice-President, Coal and Mining Operations |  | Alberta, Canada
Dawn E. de Lima |  | Chief Human Resources and Communications Officer |  | Alberta, Canada
Brett M. Gellner |  | Chief Investment Officer |  | Alberta, Canada
Cynthia Johnston |  | Executive Vice-President, Corporate Services |  | Alberta, Canada
David J. Koch |  | Vice-President, Controller |  | Alberta, Canada
John H. Kousinioris |  | Chief Legal and Compliance Officer |  | Alberta, Canada
Maryse C.C. St.-Laurent |  | Vice-President Legal and Corporate Secretary |  | Alberta, Canada
Robert I. Schaefer |  | Executive Vice-President, Trading and Marketing |  | Alberta, Canada
Todd J. Stack |  | Vice-President and Treasurer |  | Alberta, Canada
Donald Tremblay |  | Chief Financial Officer |  | Alberta, Canada

All of the officers of TransAlta have held their present principal occupation or position for the past five years, except for the following:

· Prior to January 2012, Mrs. Farrell served as Chief Operations Officer from 2009 to 2011.

· Prior to May 2014, Mr. Collins was Chief Operating Officer of Stanwell Corporation Limited (electric corporation) in Australia. Prior to July 2011, Mr. Collins was Acting Chief Executive Officer of Stanwell Corporation.

· Prior to August 2013, Mr. Gellner was Chief Financial Officer of the Corporation. Prior to June 2010, Mr. Gellner was Vice-President, Commercial Operations of the Corporation.

· Prior to September 2011, Ms. Johnston was Vice-President, Renewable Operations.

· Prior to May 2011, Mr. Koch was Vice-President, Operations Finance. Prior to November 2010, he was Vice-President, Financial Operations.

· Prior to December 2012, Mr. Kousinioris was a Partner and co-head of the Corporate Commercial Group at Bennett Jones LLP, Barristers and Solicitors (law firm).

· Prior to April 2012, Ms. de Lima was Chief Human Resources Officer and Executive Vice-President, Communications. Prior to September 2011, Ms. de Lima was Chief Human Resources Officer. Prior to March 2011, she was Vice-President Supply Chain Management.

· Prior to April 2013, Mr. Schaefer was Executive Vice-President, Corporate Development. Prior to October 2011, Mr. Schaefer was Vice-President, Commercial Operations and Development. Prior to June 2010, he was Vice-President, Development.

· Prior to November 2012, Mr. Stack was Treasurer. Prior to May 2011, Mr. Stack was Assistant Treasurer. Prior to October 2010, he was Director, Treasury Operations.

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· Prior to March 2014, Mr. Tremblay was Executive Vice President at Brookfield Renewable Energy LP (utilities). Prior to February 2011, Mr. Tremblay was Executive Vice President and Chief Financial Officer of Brookfield Renewable Power Inc., manager of Brookfield Renewable Power Fund.

As of February 18, 2015, the directors and executive officers of TransAlta, as a group, beneficially owned, directly or indirectly, or exercised control or direction over an aggregate of 1,235,755 of our common shares. This constitutes less than one per cent of our outstanding common shares.

INTERESTS OF MANAGEMENT AND OTHERS IN MATERIAL TRANSACTIONS

No director or executive officer of TransAlta, no person or company that is the direct or indirect beneficial owner of, or who exercises control or direction over more than ten per cent of our common shares, and no associate or affiliate of any of them, has or has had any material interest, direct or indirect, in any transaction involving TransAlta within the three most recently completed financial years or to date in 2015 or in any proposed transactions that has materially affected or will materially affect us.

INDEBTEDNESS OF DIRECTORS, EXECUTIVE OFFICERS AND SENIOR OFFICERS

Since January 1, 2014, there has been no indebtedness outstanding to TransAlta from any of our directors, executive officers, senior officers or associates of any such directors, nominees or senior officers.

CORPORATE CEASE TRADE ORDERS, BANKRUPTCIES OR SANCTIONS

Corporate Cease Trade Orders

Except as otherwise disclosed herein, no director, executive officer or controlling security holder of TransAlta Corporation is, as at the date of this Annual Information Form, or has been, within the past ten years before the date hereof, a director or executive officer of any other issuer that, while that person was acting in that capacity:

(i) was the subject of a cease trade or similar order or an order that denied the relevant company access to any exemption under securities legislation for a period of more than 30 consecutive days; or

(ii) was subject to an event that resulted, after the person ceased to be a director or executive officer, in the company being the subject of a cease trade or similar order or an order that denied the relevant company access to any exemption under securities legislation for a period of more than 30 consecutive days; or

(iii) within a year of that person ceasing to act in that capacity, became bankrupt, made a proposal under any legislation relating to bankruptcy or insolvency or was subject to or instituted any proceedings, arrangement or compromise with creditors or had a receiver, receiver manager or trustee appointed to hold its assets.

Personal Bankruptcies

No director, executive officer or controlling security holder of TransAlta Corporation has, within the ten years before the date hereof, become bankrupt, made a proposal under any legislation relating to bankruptcy or insolvency, or became subject to or instituted any proceedings, arrangement or compromise with creditors, or had a receiver, receiver manager or trustee appointed to hold such person’s assets.

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Penalties or Sanctions

No director, executive officer or controlling security holder of TransAlta Corporation has:

(i) been subject to any penalties or sanctions imposed by a court relating to securities legislation or by a securities regulatory authority or has entered into a settlement agreement with a securities regulatory authority, other than penalties for late filing of insider reports; or

(ii) been subject to any other penalties or sanctions imposed by a court or regulatory body that would likely be considered important to a reasonable investor in making an investment decision.

CONFLICTS OF INTEREST

Circumstances may arise where members of the Board serve as directors or officers of corporations which are in competition to the interests of TransAlta. No assurances can be given that opportunities identified by such member of the Board will be provided to us. However, our policies provide that each director and executive officer must comply with the disclosure requirements of the CBCA regarding any material interest. If a declaration of material interest is made, the declaring director shall not vote on the matter if put to a vote of the Board. In addition, the declaring director and executive officer may be requested to recuse himself or herself from the meeting when such matter is being discussed.

LEGAL PROCEEDINGS AND REGULATORY ACTIONS

TransAlta is occasionally named as a party in claims and legal proceedings which arise during the normal course of its business. We review each of these claims, including the nature of the claim, the amount in dispute or claimed and the availability of insurance coverage. There can be no assurance that any particular claim will be resolved in our favour or that such claim may not have a material adverse effect on TransAlta. For further information, please refer to Note 34 of our audited consolidated financial statements for the year ended December 31, 2014 which financial statements are incorporated by reference herein. See “Documents Incorporated by Reference”.

TRANSFER AGENT AND REGISTRAR

The transfer agent and registrar for our common shares and Series A, Series C, Series E and Series G First Preferred Shares is CST Trust Company. CST Trust Company succeeded CIBC Mellon Trust Company as our transfer agent. On November 1, 2010, CIBC Mellon Trust Company sold its issuer services business to Canadian Stock Transfer Company Inc. which operated the business on their behalf until August 30, 2013, at which time CST Trust Company, an affiliate of Canadian Stock Transfer Company Inc., received federal approval to commence business. Common shares are transferable in Vancouver, Calgary, Toronto, Montréal, and Halifax. Series A, Series C, Series E and Series G First Preferred Shares are transferable in Calgary and Toronto. The transfer agent and registrar for our common shares in the United States is Computershare at its principal office in Jersey City, New Jersey.

INTERESTS OF EXPERTS

Ernst & Young LLP, Chartered Accountants, 1000, 440 – 2 nd Avenue, S.W., Calgary, Alberta, T2P 5E9 are the auditors of TransAlta.

Our auditors, Ernst & Young LLP, are independent in accordance with the Rules of Professional Conduct of the Institute of Chartered Accountants of Alberta and have complied with the SEC’s rules on auditor independence.

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ADDITIONAL INFORMATION

Additional information in relation to TransAlta may be found under TransAlta’s profile on SEDAR at www.sedar.com and EDGAR at www.sec.gov.

Additional information including directors’ and officers’ remuneration and indebtedness, principal holders of our securities and securities authorized for issuance under equity compensation plans (all where applicable), is contained in our Management Proxy Circular for the most recent annual meeting of shareholders that involved the election of directors and can be obtained upon request from our Investor Relations department, or as filed on SEDAR at www.sedar.com and EDGAR at www.sec.gov.

Additional financial information is provided in our audited consolidated financial statements as at and for the year ended December 31, 2014 and in the related Annual MD&A, each of which is incorporated by reference in this AIF. See “Documents Incorporated by Reference”.

AUDIT AND RISK COMMITTEE

General

The members of TransAlta’s Audit and Risk Committee (“ARC”) satisfy the requirements for independence under the provisions of Canadian Securities Regulators, National Instrument 52-110 Audit Committees, Section 303A of the NYSE Rules and Rule 10A-3 under the U.S. Securities and Exchange Act of 1934. The ARC’s Charter requires that it be comprised of a minimum of three independent directors. The ARC is comprised of five independent members, Karen E. Maidment (Chair), William D. Anderson, John P. Dielwart, Alan J. Fohrer, and Yakout Mansour.

All members of the committee are financially literate pursuant to both Canadian and U.S. securities requirements and each of Ms. Karen E. Maidment and Mr. William D. Anderson have been determined by the Board to be an “audit committee financial expert”, within the meaning of Section 407 of the United States Sarbanes Oxley Act of 2002 (“Sarbanes Oxley Act”).

Mandate of the Audit and Risk Committee

The ARC provides assistance to the Board in fulfilling its oversight responsibilities with respect to i) the integrity of the Corporation’s financial statements and financial reporting process, ii) the systems of internal financial controls and disclosure controls established by management of TransAlta (“Management”), iii) the risk identification and assessment process conducted by Management including the programs established by Management to respond to such risks, iv) the internal audit function, v) compliance with financial, legal and regulatory requirements and vi) the external auditors’ qualifications, independence and performance. In so doing, it is the ARC’s responsibility to maintain an open avenue of communication between it and the external auditors, the internal auditors and the Management.

The function of the ARC is oversight. Management is responsible for the preparation, presentation and integrity of the interim and annual financial statements and related disclosure documents. Management is also responsible for maintaining appropriate accounting and financial reporting policies and systems of internal controls and disclosure controls and procedures to comply with accounting standards, applicable laws and regulations which provide reasonable assurance that the assets of the Corporation are safeguarded and transactions are authorized, executed, recorded and properly reported.

While the ARC has the responsibilities and powers set forth herein, it is not the duty of the ARC to plan or conduct audits or to determine that the Corporation’s financial statements are complete and accurate and in accordance with generally accepted accounting principles. This is the responsibility of Management and the external auditors.

The designation of a member or members as an “audit committee financial expert” is based on that individual’s education and experience, which the individual will bring to bear in carrying out his or her duties on the ARC.

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Designation as an “audit committee financial expert” does not impose on such person any duties, obligations and liability that are greater than the duties, obligations and liability imposed on another member of the Committee and Board in the absence of such designation.

Management is also responsible for the identification and management of the Corporation’s risks and the development and implementation of policies and procedures to mitigate such risks. The ARC’s role is to provide oversight in order to ensure that the Corporation’s assets are protected and safeguarded within reasonable business limits. The ARC reports to the Board on its risk oversight responsibilities.

Audit and Risk Committee Charter

The Charter of the ARC is attached as Appendix “A”.

Relevant Education and Experience of Audit and Risk Committee Members

The following is a brief summary of the education or experience of each member of the ARC that is relevant to the performance of their responsibilities as a member of the ARC, including any education or experience that has provided the member with an understanding of the accounting principles that we use to prepare our annual and interim financial statements.

Name of ARC Member |  | Relevant Education and Experience
W. D. Anderson |  | Mr. Anderson is a Chartered Accountant, with 17 years experience with a major Chartered Accountant firm in Canada. Mr. Anderson has served as CEO of a public company and as CFO of several public companies. In such capacities, Mr. Anderson actively supervised persons engaged in preparing, auditing, analyzing or evaluating financial statements. Mr. Anderson has also served as a principal financial officer and accounting officer and as a director and audit committee chair and member of several public companies. He has served on the board and audit committee of a public company that reports under U.S. GAAP.
J. P. Dielwart |  | Mr. Dielwart is currently the Vice-Chairman of ARC Financial Corp., an energy focused private equity manager. Mr. Dielwart served as the chief executive officer of a Canadian publicly listed company for sixteen years during which time he had extensive experience actively supervising the finance and accounting functions and public accountants. Mr. Dielwart also serves on the audit committee of Tesco Corporation, a public company.
A. J. Fohrer |  | Prior to his retirement in December 2010, Mr. Fohrer was Chairman and CEO of SCE, a subsidiary of Edison and the largest electric utilities in the United States. Prior to that, Mr. Fohrer served as Executive Vice-President, Treasurer and Chief Financial Officer of both Edison and SCE. Mr. Fohrer also serves on the audit committee of PNM Resources Inc., a public company.
K. E. Maidment |  | Ms. Maidment is a Chartered Accountant. Ms. Maidment has served as a CFO with financial oversight responsibilities for TSX and NYSE listed public companies for over 15 years. She has also held positions where she was responsible for global finance operations, risk management, legal and compliance, communications and mergers and acquisitions. In addition, Ms. Maidment has worked with government bodies in order to develop regulations and frameworks for the conversion of major insurers from mutual to public companies. Ms. Maidment holds a bachelor of commerce from McMaster University, and in 2000 was named a Fellow of the Chartered Professional Accountants of Ontario.

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Name of ARC Member |  | Relevant Education and Experience
Y. Mansour |  | Mr. Mansour has over 40 years of experience as an executive in the electric utility business. He served as President and CEO of the California Independent System Operation Corporation and was a senior executive at BC Hydro and the British Columbia Transmission Corporation. Mr. Mansour has supervised and dealt with financial reporting and internal control.

Other Board Committees

In addition to the ARC, TransAlta has two other standing committees: the Governance and Environment Committee and the Human Resources Committee. The members of these committees as of February 18, 2015 are:

Governance and Environment Committee |  | Human Resources Committee
Chair: Michael M. Kanovsky |  | Chair: Timothy W. Faithfull
William D. Anderson |  | P. Thomas Jenkins
John P. Dielwart |  | C. Kent Jespersen
Alan J. Fohrer |  | Georgia Nelson
Martha C. Piper |  | Martha C. Piper

The Charters of the Governance and Environment Committee and the Human Resources Committee may be found on our website under Governance Board Committees at www.transalta.com. Further information about the Board and our corporate governance may also be found on our website or in our Management Proxy Circular which is filed on SEDAR at www.sedar.com and EDGAR at www.sec.gov.

For the years ended December 31, 2014 and December 31, 2013, Ernst & Young LLP and its affiliates were paid $3,587,987 and $3,384,692 respectively, as detailed below:

Ernst & Young LLP

Year Ended Dec. 31 |  | 2014 |  | 2013
Audit Fees |  | $ | 2,973,020 |  |  | $ | 2,931,297 |
Audit-related fees |  | 586,900 |  |  | 409,950 |
Tax fees |  | 28,067 |  |  | 43,445 |
All other fees |  | 0 |  |  | 0 |
Total |  | $ | 3,587,987 |  |  | $ | 3,384,692 |

No other audit firms provided audit services in 2014 or 2013.

The nature of each category of fees is described below:

Audit Fees

Audit fees were paid for professional services rendered by the auditors for the audit of our annual financial statements or services provided in connection with statutory and regulatory filings or engagements, including the translation from English to French of our financial statements and other documents. Total audit fees for 2014 include payments related to 2013 in the amount of $1,369,460.

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Audit-Related Fees

The audit-related fees in 2014 were primarily for work performed by Ernst & Young LLP in relation to compliance and regulatory reporting, debt issuances and miscellaneous accounting advice provided to the Corporation. The audit-related fees in 2013 were primarily for work performed by Ernst & Young LLP in relation to compliance and regulatory reporting, common share issuances, debt issuances and miscellaneous accounting advice provided to the Corporation.

Tax Fees

The tax fees for 2014 and 2013 relate to various tax related matters in our domestic and foreign operations.

All Other Fees

Nil

Pre-Approval Policies and Procedures

The ARC has considered whether the provision of services other than audit services is compatible with maintaining the auditors’ independence. In May 2002, the ARC adopted a policy (the “Policy”) that prohibits TransAlta from engaging the auditors for “prohibited” categories of non-audit services and requires pre-approval of the ARC for other permissible categories of non-audit services, such categories being determined under the Sarbanes-Oxley Act. The Policy also provides that the Chair of the ARC may approve permissible non-audit services during the quarter and report such approval to the ARC at its next regularly scheduled meeting.

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APPENDIX “A”

AUDIT AND RISK COMMITTEE CHARTER

TRANSALTA CORPORATION

(the “Corporation”)

A. Establishment of Committee and Procedures

1. Composition of Committee

The Audit and Risk Committee (the “Committee”) of the Board of Directors (the “Board”) of TransAlta Corporation (the “Corporation”) shall consist of not less than three Directors. All members of the Committee shall be determined by the Board to be independent as required under the provisions of Canadian Securities Regulators’ Multilateral Instrument 52-110 Audit Committees, Section 303A of the New York Stock Exchange rules and Rule 10A-3 of the U.S. Securities and Exchange Act of 1934, as such rules apply to audit committee members. All members of the Committee must be financially literate pursuant to both Canadian and U.S. securities requirements and at least one member must be determined by the Board to be an “audit committee financial expert” within the meaning of Section 407 of the United States Sarbanes-Oxley Act of 2002 (the “Sarbanes-Oxley Act’). Determinations as to whether a particular director satisfies the requirements for membership on the Committee shall be made by the Board at the recommendation of the Governance and Environment Committee.

2. Appointment of Committee Members

Members of the Committee shall be appointed from time to time by the Board, on the recommendation of the Governance and Environment Committee, and shall hold office until the next annual meeting of shareholders, or until their successors are earlier appointed, or until they cease to be Directors of the Corporation.

3. Vacancies

Where a vacancy occurs at any time in the membership of the Committee, it may be filled by the Board and on the recommendation of the Governance and Environment Committee. The Board shall fill any vacancy if the membership of the Committee is less than three directors.

4. Committee Chair

The Board shall appoint a Chair for the Committee on the recommendation of the Governance and Environment Committee.

5. Absence of Committee Chair

If the Chair of the Committee is not present at any meeting of the Committee, one of the members of the Committee who is present at the meeting shall be chosen by the Committee to preside at the meeting.

6. Secretary of Committee

The Committee shall appoint a Secretary who need not be a director of the Corporation.

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7. Meetings

The Chair of the Committee may call a regular meeting of the Committee. The Committee shall meet at least quarterly and at such other time during each year as it deems appropriate to fulfill its responsibilities. In addition, the Chair of the Committee or any two members may call a special meeting of the Committee at any time.

The Committee shall also meet in separate executive session.

8. Quorum

A majority of the members of the Committee, present in person or by telephone or other telecommunication device that permits all persons participating in the meeting to speak to each other shall constitute a quorum.

9. Notice of Meetings

Notice of the time and place of every meeting shall be given in writing (including by way of written facsimile communication or email) to each member of the Committee at least 48 hours prior to the time fixed for such meeting, provided, however, that a member may in any manner waive notice of a meeting; and attendance of a member at a meeting constitutes a waiver of notice of the meeting, except where a member attends for the express purpose of objecting to the transaction of any business on the ground that the meeting is not lawfully called. Notice of every meeting shall also be provided to the external and internal auditors.

10. Attendance at Meetings

At the invitation of the Chair of the Committee, other Board members the President and Chief Executive Officer (“CEO”), other officers or employees of the Corporation, the external auditors, and other experts or consultants may attend a meeting of the Committee.

11. Procedure, Records and Reporting

Subject to any statute or the articles and by-laws of the Corporation, the Committee shall fix its own procedures at meetings, keep records of its proceedings and report to the Board generally not later than the next scheduled meeting of the Board.

12. Review of Charter and Evaluation of Committee

The Committee shall evaluate its performance and review and assess the adequacy of its Charter at least annually or otherwise, as it deems appropriate. All changes proposed by the Committee are reviewed and approved by the Governance and Environment Committee and the Board.

13. Outside Experts and Advisors

The Committee Chair, on behalf of the Committee, or any of its members is authorized, at the expense of the Corporation, when deemed necessary or desirable, to retain independent counsel, outside experts and other advisors to advise the Committee independently on any matter. The retention of such counsel, expert or advisor in no way requires the Committee to act in accordance with the recommendations of such counsel, expert or advisor.

B. Duties and Responsibilities of the Chair

The fundamental responsibility of the Chair of the Committee is to effectively manage the duties of the Committee.

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The Chair is responsible for:

1. Chairing meetings of the Committee and ensuring that the Committee is properly organized so that it functions effectively and meets its obligations and responsibilities.

2. Establishing the frequency of Committee meetings, duly convening the same and confirming that quorum is present when required.

3. Working with the CEO, the Chief Financial Officer (the “CFO”) and the Vice President Legal and Corporate Secretary on the development of agendas and related materials for the meetings.

4. Providing leadership to the Committee and assisting the Committee in ensuring the proper and timely discharge of its responsibilities.

5. Reporting to the Board on the recommendations and decisions of the Committee.

C. Mandate of the Committee

The Committee provides assistance to the Board in fulfilling its oversight responsibilities with respect to i) the integrity of the Corporation’s financial statements and financial reporting process, ii) the systems of internal financial controls and disclosure controls established by Management, iii) the risk identification and assessment process conducted by Management including the programs established by Management to respond to such risks, iv) the internal audit function, v) compliance with financial, legal and regulatory requirements and vi) the external auditors’ qualifications, independence and performance. In so doing, it is the Committee’s responsibility to maintain an open avenue of communication between it and the external auditors, the internal auditors and the Management of the Corporation.

The function of the Committee is oversight. Management is responsible for the preparation, presentation and integrity of the interim and annual financial statements and related disclosure documents. Management of the Corporation is also responsible for maintaining appropriate accounting and financial reporting policies and systems of internal controls and disclosure controls and procedures to comply with accounting standards, applicable laws and regulations which provide reasonable assurance that the assets of the Corporation are safeguarded and transactions are authorized, executed, recorded and properly reported.

While the Committee has the responsibilities and powers set forth herein, it is not the duty of the Committee to plan or conduct audits or to determine that the Corporation’s financial statements are complete and accurate and in accordance with generally accepted accounting principles. This is the responsibility of Management and the external auditors.

The Committee must also designate at least one member as an “audit committee financial expert”. The designation of a member or members as an “audit committee financial expert” is based on that individual’s education and experience, which the individual will bring to bear in carrying out his or her duties on the Committee. Designation as an “audit committee financial expert” does not impose on such person any duties, obligations and liability that are greater than the duties, obligations and liability imposed on another member of the Committee and Board in the absence of such designation.

Management is also responsible for the identification and management of the Corporation’s risks and the development and implementation of policies and procedures to mitigate such risks. The Committee’s role is to provide oversight in order to ensure that the Corporation’s assets are protected and safeguarded within reasonable business limits. The Committee reports to the Board on its risk oversight responsibilities.

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D. Duties and Responsibilities of the Committee

1. Financial Reporting, External Auditors and Financial Planning

A) Duties and Responsibilities Related to Financial Reporting and the Audit Process

(a) Review with Management and the external auditors the Corporation’s financial reporting process, the work to be conducted in conjunction with the annual audit and the preparation of the financial statements, including, without limitation, the annual audit plan of the external auditors, the judgment of the external auditors as to the quality, not just the acceptability, of and the appropriateness of the Corporation’s accounting principles as applied in its financial reporting and the degree of aggressiveness or conservatism of the Corporation’s accounting principles and underlying estimates;

(b) Review with Management and the external auditors the Corporation’s audited annual financial statements, including the notes thereto, “Management’s Discussion and Analysis”, the related earnings release, and recommend their approval to the Board for release to the public;

(c) Review with Management and the external auditors the Corporation’s interim financial statements, including the notes thereto, “Management’s Discussion and Analysis”, the related earnings release, and approve their release to the public as required;

(d) In reviewing the financial statements and related financial disclosure, the Committee shall review and discuss with Management and the external auditors:

(i) any changes in accounting principles, practices or policies considering their applicability to the business and financial impact;

(ii) Management’s processes for formulating sensitive accounting estimates and the reasonableness of the estimates;

(iii) the use of “pro forma” or “non-comparable” information and the applicable reconciliation;

(iv) alternative treatments of financial information within generally accepted accounting principles that have been discussed between Management and the auditors, ramifications of the use of such alternative disclosures and treatments and the treatment preferred by the external auditors; and

(v) disclosures made to the Committee by the CEO and CFO during their certification process for the relevant periodic/annual report filed with securities regulators to ensure that information required to be disclosed is recorded, processed, summarized and reported within the time periods specified for the reporting period. Obtain assurances from the CEO and CFO as to the adequacy and effectiveness of the Corporation’s disclosure controls and procedures and systems of internal control over financial reporting and that any fraud involving Management or other employees who have a significant role in the Corporation’s internal controls is reported to the Committee.

(e) In reviewing the financial statements and related financial disclosure, the Committee shall also, with the external auditors:

(i) discuss the cooperation they received from Management during the course of their review and their access to all records, data and information requested; and

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(ii) satisfy itself that there are no unresolved issues between Management and the external auditors that could reasonably be expected to materially affect the financial statements.

(f) Review quarterly with senior Management, the Chief Legal and Compliance Officer (as necessary outside legal advisors), and the Corporation’s internal and external auditors, the effectiveness of the Corporation’s internal controls to ensure the Corporation is in compliance with legal and regulatory requirements and the Corporation’s policies;

(g) Review with Management and the external auditors the processes relating to the assessment of potential fraud, programs and controls to mitigate the risk of fraud, and the processes put in place for monitoring the risks within the targeted areas; and

(h) Discuss with Management and the external auditors any correspondence from or with regulators or governmental agencies, any employee complaints or any published reports that raise material issues regarding the Corporation’s financial statements or accounting policies.

B) Duties and Responsibilities Related to the External Auditors

(a) The Committee shall have direct responsibility for the compensation and oversight of the external auditors including nominating the external auditors to the Board for appointment by the shareholders at the Corporation’s general annual meeting. In performing its function, the Committee shall:

(i) review and approve annually the external auditors audit plan;

(ii) review and approve the basis and amount of the external auditors’ fees and ensure the Corporation has provided appropriate funding for payment of compensation to the external auditors;

(iii) subject to the delegation granted to the Chair of the Committee, pre-approve all audit related services including all non-prohibited non-audit services provided by the external auditors; the Chair of the Committee is authorized to approve all audit related services including non-prohibited non-audit services provided by the external auditors, and shall report all such approvals to the Committee at its next scheduled meeting;

(iv) review and discuss annually with the external auditors all relationships that the external auditors and their affiliates have with the Corporation and its affiliates in order to determine the external auditors’ independence, including, without limitation, (a) requesting, receiving and reviewing, at least annually, a formal written statement from the external auditors delineating all relationships that may reasonably be thought to bear on their independence with the Corporation; (b) discussing with the external auditors any relationships or services that the external auditors believe may affect their objectivity and professional skepticism; (c) reviewing with the external auditors the experience and qualifications of the senior personnel who are providing audit services to the Corporation; (d) reviewing the quality control procedures of the external auditors, including obtaining confirmation that the external auditors are in compliance with Canadian and U.S. regulatory registration requirements; and (e) evaluating the communication and interaction with the external auditor including quality of service considerations;

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(v) perform, every five years, and in the year preceding the change of audit partner, (a) comprehensive review of the external auditor which takes into consideration the impact of the tenure of the audit firm on audit quality, trends in the audit firm’s performance and expertise in the industry, incidences of independence threats and the effectiveness of safeguards to mitigate those threats, (b) the responsiveness of the audit firm to changes in the entity’s business and suggestions for improvement from regulators, the audit committee and/or management, (c) the consistency and rigour of the professional skepticism applied by the external auditor, and the quality of the engagement team and its communications, review of CPAB inspection findings since the previous comprehensive review and how the audit firm responded to these findings, and (d) following this comprehensive review, an evaluation on whether the audit firm should be retained as the Corporation’s external auditor;

(vi) inform the external auditors and Management that the external auditors shall have direct access to the Committee at all times, as well as the Committee to the external auditors;

(vii) instruct the external auditors that they are ultimately accountable to the Committee as representatives of the shareholders of the Corporation; and

(viii) at least annually, obtain and review the external auditors’ report with respect to the auditing firm’s internal quality-control procedures, any material issues raised by the most recent internal quality-control review or peer review of the auditing firm, any inquiry or investigation by governmental or professional authorities within the preceding five years undertaken respecting one or more independent audits carried out by the external auditors, and any steps taken to deal with any such issues.

C) Duties and Responsibilities Related to Financial Planning

(a) Review and recommend to the Board for approval the Corporation’s issuance and redemption of securities (including the review of all public filings to effect any of the issuances or redemptions), financial commitments and limits, and any material changes underlying any of these commitments;

(b) Review annually the Corporation’s annual tax plan;

(c) Receive regular updates with respect to the Corporation’s financial obligations, loans, credit facilities, credit position and financial liquidity;

(d) Review annually with Management the Corporation’s overall financing plan in support of the Corporation’s capital expenditure plan and overall budget/medium range forecast; and

(e) Review with Management at least annually the approach and nature of earnings guidance and financial information to be disclosed to analysts and rating agencies.

2. Internal Audit

(a) Review and consider, as appropriate, any significant reports and recommendations made by internal audit relating to internal audit issues, together with Management’s response thereto;

(b) Review annually the internal audit department’s charter, the scope and plans for the work of the internal audit group, the adequacy of the group’s resources, the internal auditors’ access to the Corporation’s records, property and personnel;

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(c) Recognize and advise senior Management that the internal auditors shall have unfettered access to the Committee, as well as the Committee to the internal auditors;

(d) Meet separately with Management, the external auditors and internal auditors to review issues and matters of concern respecting audits and financial reporting;

(e) Review with the Corporation’s senior financial Management and the Director, Internal Audit the adequacy of the Corporation’s systems of internal control and procedures; and

(e) Recommend to the Human Resources Committee the appointment, termination or transfer of the Director, Internal Audit.

3. Risk Management

The Board is responsible for ensuring that the Corporation has adopted processes and key policies for the identification, assessment and management of its principal risks. The Board has delegated to the Committee the responsibility for the oversight of Management’s identification, and evaluation, of the Corporation’s principal risks, and the implementation of appropriate policies, processes and systems to manage or mitigate the risks within the Corporation’s risk appetite. The Committee reports to the Board thereon.

The Committee shall:

(a) Review, at least quarterly, Management’s assessment of the Corporation’s principal risks; discuss with Management the processes for the identification of these risks and the efficacy of the policies and procedures for mitigating and/or addressing these risks;

(b) Receive and review Managements’ quarterly risk update including an update on residual risks;

(c) Review the Corporation’s enterprise risk management framework and reporting methodology;

(d) Review annually the Corporation’s Financial and Commodity Exposure Management Policies and approve changes to such policies;

(e) Review and approve the Corporation’s strategic hedging program, guidelines and risk tolerance;

(f) Review and monitor quarterly results of financial and commodity exposure management activities, including foreign currency and interest rate risk strategies, counterparty credit exposure and the use of derivative instruments;

(g) Review the Corporation’s annual insurance program, including the risk retention philosophy, potential exposure and corporate liability protection programs;

(h) Periodically consider the respective roles and responsibilities of the external auditor, the internal audit department, internal and external counsel concerning risk management and review their performance in relation to such roles and responsibilities; and

(i) Annually, together with Management, report and review with the Board:

(i) the Corporation’s principal risks and overall risk appetite/profile;

(ii) the Corporation’s strategies in addressing its risk profile;

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(iii) the processes, policies, procedures and controls in place to manage or mitigate the principal risks; and

(iv) the overall effectiveness of the enterprise risk management process and program.

4. Governance

A) Public Disclosure, Legal and Regulatory Reporting

(a) On behalf of the Committee, the Chair shall review all public disclosure inclusive of material financial information extracted or derived from the Corporation’s financial statements prior to dissemination to the public;

(b) Review quarterly with the Chief Legal and Compliance Officer, and, if necessary, outside legal advisors, significant legal, compliance or regulatory matters that may have a material effect on the Corporation’s financial statements;

(c) Discuss with the external auditors their perception of the Corporation’s financial and accounting personnel, any recommendations which the external auditors may have, including those contained in the Management letter, with respect to improving internal financial controls, choice of accounting principles or management reporting systems, and review all Management letters from the external auditors together with Management’s written responses thereto;

(d) Review with Management, the external auditors and internal legal counsel (external counsel if necessary), any litigation, claim or contingency, including tax assessments, that could have a material effect upon the financial position of the Corporation, and the manner in which these may be or have been disclosed in the financial statements;

(e) Review annually the Insider Trading Policy and approve changes as required; and

(f) Review annually the Corporation’s Disclosure Policy and Social Media Policy to ensure continued applicability with the law and the Corporation’s disclosure principles.

B) Pension Plan Governance

(a) Review annually the Annual Pension Report and financial statements of the Corporation’s pension plans including the actuarial valuation, asset/liability forecast, asset allocation, manager performance and plan operating costs and reporting thereon to the Board annually; and

(b) Together with the Human Resources Committee of the Board, review annually, and as required, the overall governance of the Corporation’s Pension Plans, approving the broad objectives of the plans, the statement of investment policy, the appointment of investment managers, and reporting thereon to the Board annually.

C) Information Technology – Cyber Security

(a) Receive bi-annually a system status update with respect to the Corporation’s core IT operating systems; and

(b) Review annually the Corporation’s cyber security programs and their effectiveness. Receive an update on the Corporation’s compliance program for cyber threats and security.

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D) Administrative Responsibilities

(a) Review the annual audit of expense accounts and perquisites of the Directors, the CEO and her direct reports and their use of Corporate assets;

(b) Establish procedures for the receipt, retention and treatment of complaints received by the Corporation regarding accounting, internal and disclosure controls or auditing matters and the confidential, anonymous submission by employees, contractors, shareholders and other stakeholders of concerns regarding accounting, auditing, ethical or legal violations;

(c) Review all incidents, complaints or information reported through the Ethics Help Line and/or Management;

(d) Initiate investigations of complaints or allegations as necessary, report to the Board thereon and ensure that appropriate action is taken as necessary to address the matter;

(e) Review and approve the Corporation’s hiring policies for employees or former employees of the external auditors and monitor the Corporation’s adherence to the policy; and

(f) Report annually to shareholders on the work of the Committee during the year.

E. Compliance and Powers of the Committee

(a) The responsibilities of the Committee comply with applicable Canadian laws and regulations, such as the rules of the Canadian Securities Administrators, and with the disclosure and listing requirements of the Toronto Stock Exchange, as they exist on the date hereof. In addition, this Charter complies with applicable U.S. laws, such as the Sarbanes-Oxley Act and the rules and regulations adopted thereunder, and with the New York Stock Exchanges’ corporate governance standards, as they exist on the date hereof.

(b) The Committee may, at the request of the Board or on its own initiative, investigate such other matters as are considered necessary or appropriate in carrying out its mandate.

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APPENDIX “B”

GLOSSARY OF TERMS

This Annual Information Form includes the following defined terms:

Air Emissions – Substances released to the atmosphere through industrial operations. For the fossil-fuel-fired power sector, the most common air emissions are sulphur dioxide, oxides of nitrogen, mercury, and greenhouse gases.

Power Purchase Arrangement (PPA) – A long-term arrangement established by regulation for the sale of electric energy from formerly regulated generating units to PPA Buyers.

Availability – A measure of time, expressed as a percentage of continuous operation 24 hours a day, 365 days a year, that a generating unit is capable of generating electricity, regardless of whether or not it is actually generating electricity.

Boiler – A device for generating steam for power, processing or heating purposes, or for producing hot water for heating purposes or hot water supply. Heat from an external combustion source is transmitted to a fluid contained within the tubes of the boiler shell.

Capacity – The rated continuous load-carrying ability, expressed in megawatts, of generation equipment.

Carbon Capture and Storage (CCS) – An approach to mitigating the contribution of greenhouse gas emissions to global warming, which is based on capturing carbon dioxide emissions from industrial operations and permanently storing them in deep underground formations.

Cogeneration – A generating facility that produces electricity and another form of useful thermal energy (such as heat or steam) used for industrial, commercial, heating, or cooling purposes.

Combined-Cycle – An electric generating technology in which electricity is produced from otherwise lost waste heat exiting from one or more gas (combustion) turbines. The exiting heat is routed to a conventional boiler or to a heat recovery steam generator for use by a steam turbine in the production of electricity. This process increases the efficiency of the electric generating unit.

Dividend – Refers to a cash dividend declared payable by TransAlta on the outstanding Shares.

eERP – ecoEnergy for Renewable Power program, a program established by the Federal Government.

Force Majeure – Literally means “greater force”. These clauses excuse a party from liability if some unforeseen event beyond the control of that party prevents it from performing its obligations under the contract.

Geothermal Facility – A plant in which the prime mover is a steam turbine. The turbine is driven either by steam produced from hot water or by natural steam that derives its energy from heat found in rocks or fluids at various depths beneath the surface of the earth. The energy is extracted by drilling and/or pumping.

Gigawatt – A measure of electric power equal to 1,000 megawatts.

Gigawatt hour (GWh) – A measure of electricity consumption equivalent to the use of 1,000 megawatts of power over a period of one hour.

Global Adjustment - is the difference between the total payments made to certain contracted or regulated generators/demand management projects, and market revenues and is calculated each month. The adjustment is determined by the Ontario Independent Electricity System Operator

Greenhouse Gas (GHG) – Gases having potential to retain heat in the atmosphere, including water vapour, carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, and perfluorocarbons.

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Megawatt (MW) – A measure of electric power equal to 1,000,000 watts.

Megawatt hour (MWh) – A measure of electricity consumption equivalent to the use of 1,000,000 watts of power over a period of one hour.

Net Capacity – The maximum capacity or effective rating, modified for ambient limitations, that a generating unit or power plant can sustain over a specific period, less the capacity used to supply the demand of station service or auxiliary needs.

Supercritical Technology – The most advanced coal-combustion technology in Canada employing a supercritical boiler, high-efficiency multi-stage turbine, flue gas desulphurization unit (scrubber), bag house, and low nitrogen oxide burners.

Terajoule (TJ) – A measurement of work or energy equal to 1,000,000,000,000 joules or 1,000 gigajoules.

Uprate – To increase the rated electrical capability of a power generating facility or unit.

WPPI – Wind Power Production Incentive payments from the Federal Government.

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