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Commitments and Contingencies | 12 Months Ended
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Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and Contingencies Long-Term Service Agreements As of December 31, 2012, the total estimated commitments for LTSAs associated with turbines installed or in storage were approximately $68 million. These commitments are payable over the terms of the respective agreements, which range from 1 to 5 years. LTSA future commitment estimates are based on the stated payment terms in the contracts at the time of execution and are subject to an annual inflationary adjustment. Certain of these agreements have terms that allow us to cancel the contracts for a fee. If we cancel such contracts, the estimated commitments remaining for LTSAs would be reduced. Power Plant, Land and Other Operating Leases We have entered into certain long-term operating leases for power plants, extending through 2020, which include renewal options or purchase options at fair value and contain customary restrictions on dividends up to Calpine Corporation, additional debt and further encumbrances similar to those typically found in project finance agreements. Payments on our operating leases, which may contain escalation clauses or step rent provisions, are recognized on a straight-line basis. Certain capital improvements associated with leased power plants may be deemed to be leasehold improvements and are amortized over the shorter of the term of the lease or the economic life of the capital improvement. We have also entered into various land and other operating leases for ground facilities and operations, which extend through 2069. Future minimum lease payments under these leases are as follows (in millions):
| Initial Year |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |  | Thereafter |  | Total
Land and other operating leases | various |  | $ | 14 |  |  | $ | 14 |  |  | $ | 14 |  |  | $ | 15 |  |  | $ | 15 |  |  | $ | 228 |  |  | $ | 300 |
Power plant operating leases: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Greenleaf | 1998 |  | $ | 7 |  |  | $ | 3 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 10 |
KIAC | 2000 |  | 24 |  |  | 24 |  |  | 23 |  |  | 22 |  |  | 22 |  |  | 52 |  |  | 167 |
Total power plant leases |  |  | $ | 31 |  |  | $ | 27 |  |  | $ | 23 |  |  | $ | 22 |  |  | $ | 22 |  |  | $ | 52 |  |  | $ | 177 |
Total leases |  |  | $ | 45 |  |  | $ | 41 |  |  | $ | 37 |  |  | $ | 37 |  |  | $ | 37 |  |  | $ | 280 |  |  | $ | 477 |
During the years ended December 31, 2012, 2011 and 2010, rent expense for power plant and land and other operating leases amounted to $51 million, $53 million and $60 million, respectively. Production Royalties and Leases We are obligated under numerous geothermal leases and right-of-way, easement and surface agreements. The geothermal leases generally provide for royalties based on production revenue with reductions for property taxes paid. The right-of-way, easement and surface agreements are based on flat rates or adjusted based on consumer price index changes and are not material. Under the terms of most geothermal leases, the royalties accrue as a percentage of power revenues. Certain properties also have net profits and overriding royalty interests that are in addition to the land base lease royalties. Some lease agreements contain clauses providing for minimum lease payments to lessors if production temporarily ceases or if production falls below a specified level. Production royalties for geothermal power plants for the years ended December 31, 2012, 2011 and 2010, were $22 million, $22 million and $25 million, respectively. Office Leases We lease our corporate and regional offices under noncancellable operating leases extending through 2020. Future minimum lease payments under these leases are as follows (in millions):
2013 | $ | 12 |
2014 | 12 |
2015 | 12 |
2016 | 12 |
2017 | 12 |
Thereafter | 31 |
Total | $ | 91 |
Lease payments are subject to adjustments for our pro rata portion of annual increases or decreases in building operating costs. During the years ended December 31, 2012, 2011 and 2010, rent expense for noncancellable operating leases was $12 million, $13 million and $12 million, respectively. Natural Gas Purchases We enter into natural gas purchase contracts of various terms with third parties to supply natural gas to our natural gas-fired power plants. The majority of our purchases are made in the spot market or under index-priced contracts. At December 31, 2012, we had future commitments of approximately $3.0 billion for natural gas purchases under contracts with terms from 1 to 13 years, and one contract with a term of 29 years. Guarantees and Indemnifications As part of our normal business operations, we enter into various agreements providing, or otherwise arranging, financial or performance assurance to third parties on behalf of our subsidiaries in the ordinary course of such subsidiaries’ respective business. Such arrangements include guarantees, standby letters of credit and surety bonds for power and natural gas purchase and sale arrangements and contracts associated with the development, construction, operation and maintenance of our fleet of power plants. These arrangements are entered into primarily to support or enhance the creditworthiness otherwise attributed to a subsidiary on a stand-alone basis, thereby facilitating the extension of sufficient credit to accomplish the subsidiaries’ intended commercial purposes. At December 31, 2012, guarantees of subsidiary debt, standby letters of credit and surety bonds to third parties and guarantees of subsidiary operating lease payments and their respective expiration dates were as follows (in millions):
Guarantee Commitments |  | 2013 |  | 2014 |  | 2015 |  | 2016 |  | 2017 |  | Thereafter |  | Total
Guarantee of subsidiary debt(1) |  | $ | 47 |  |  | $ | 36 |  |  | $ | 37 |  |  | $ | 36 |  |  | $ | 26 |  |  | $ | 209 |  |  | $ | 391 |
Standby letters of credit(2)(4) |  | 536 |  |  | 41 |  |  | — |  |  | — |  |  | 19 |  |  | 30 |  |  | 626 |
Surety bonds(3)(4)(5) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 4 |  |  | 4 |
Guarantee of subsidiary operating lease payments(4) |  | 7 |  |  | 3 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 10 |
Total |  | $ | 590 |  |  | $ | 80 |  |  | $ | 37 |  |  | $ | 36 |  |  | $ | 45 |  |  | $ | 243 |  |  | $ | 1,031 |
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(1) | Represents Calpine Corporation guarantees of certain power plant capital leases and related interest. All guaranteed capital leases are recorded on our Consolidated Balance Sheets.
(2) | The standby letters of credit disclosed above represent those disclosed in Note 6.
(3) | The majority of surety bonds do not have expiration or cancellation dates.
(4) | These are contingent off balance sheet obligations.
(5) | As of December 31, 2012, $3 million of cash collateral is outstanding related to these bonds.
We routinely arrange for the issuance of letters of credit and various forms of surety bonds to third parties in support of our subsidiaries’ contractual arrangements of the types described above and may guarantee the operating performance of some of our partially-owned subsidiaries up to our ownership percentage. The letters of credit issued under various credit facilities support CES risk management and other operational and construction activities. In the event a subsidiary were to fail to perform its obligations under a contract supported by such a letter of credit or surety bond, and the issuing bank or surety were to make payment to the third party, we would be responsible for reimbursing the issuing bank or surety within an agreed timeframe, typically a period of one to ten days. To the extent liabilities are incurred as a result of activities covered by letters of credit or the surety bonds, such liabilities are included on our Consolidated Balance Sheets. Commercial Agreements — In connection with the purchase and sale of power, natural gas and emission allowances to and from third parties with respect to the operation of our power plants, we may be required to guarantee a portion of the obligations of certain of our subsidiaries. These guarantees may include future payment obligations and effectively guarantee our future performance under certain agreements. Asset Acquisition and Disposition Agreements — In connection with our purchase and sale agreements, we have frequently provided for indemnification to the counterparty for liabilities incurred as a result of a breach of a representation or warranty by the indemnifying party. These indemnification obligations generally have a discrete term and are intended to protect the parties against risks that are difficult to predict or impossible to quantify at the time of the consummation of a particular transaction. Other — Additionally, we and our subsidiaries from time to time assume other guarantee and indemnification obligations in conjunction with other transactions such as parts supply agreements, construction agreements and equipment lease agreements. These guarantee and indemnification obligations may include future payment obligations and effectively guarantee our future performance under certain agreements. Our potential exposure under guarantee and indemnification obligations can range from a specified amount to an unlimited dollar amount, depending on the nature of the claim and the particular transaction. Our total maximum exposure under our guarantee and indemnification obligations is not estimable due to uncertainty as to whether claims will be made or how any potential claim will be resolved. As of December 31, 2012, there are no outstanding claims related to our guarantee and indemnification obligations and we do not anticipate that we will be required to make any material payments under our guarantee and indemnification obligations. Litigation We are party to various litigation matters, including regulatory and administrative proceedings arising out of the normal course of business. At the present time, we do not expect that the outcome of any of these proceedings will have a material adverse effect on our financial condition, results of operations or cash flows. On a quarterly basis, we review our litigation activities and determine if an unfavorable outcome to us is considered “remote,” “reasonably possible” or “probable” as defined by U.S. GAAP. Where we determine an unfavorable outcome is probable and is reasonably estimable, we accrue for potential litigation losses. The liability we may ultimately incur with respect to such litigation matters, in the event of a negative outcome, may be in excess of amounts currently accrued, if any; however, we do not expect that the reasonably possible outcome of these litigation matters would, individually or in the aggregate, have a material adverse effect on our financial condition, results of operations or cash flows. Where we determine an unfavorable outcome is not probable or reasonably estimable, we do not accrue for any potential litigation loss. The ultimate outcome of these litigation matters cannot presently be determined, nor can the liability that could potentially result from a negative outcome be reasonably estimated. As a result, we give no assurance that such litigation matters would, individually or in the aggregate, not have a material adverse effect on our financial condition, results of operations or cash flows. Environmental Matters We are subject to complex and stringent environmental laws and regulations related to the operation of our power plants. On occasion, we may incur environmental fees, penalties and fines associated with the operation of our power plants. At the present time, we do not have environmental violations or other matters that would have a material impact on our financial condition, results of operations or cash flows or that would significantly change our operations.

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