and options on futures. Other than certain derivative instruments in its trust investment funds, it is TVA's policy to enter into these derivative transactions solely for hedging purposes and not for speculative purposes. During the fourth quarter of 2020, TVA discontinued derivative accounting for forward coal contracts because these contracts no longer met the criteria of net settlement, and, as a result, the associated net derivative liabilities were derecognized at that time. In addition, TVA suspended its Financial Trading Program ("FTP") in 2014 and is not currently using financial instruments to hedge risks related to commodity prices. TVA plans to continue managing fuel price volatility through other methods and is reevaluating its suspended FTP program for future use of financial instruments.

TVA recognizes certain of its derivative instruments as either assets or liabilities on its Consolidated Balance Sheets at fair value. The accounting for changes in the fair value of these instruments depends on (1) whether TVA uses regulatory accounting to defer the derivative gains and losses, (2) whether the derivative instrument has been designated and qualifies for hedge accounting treatment, and (3) if so, the type of hedge relationship (for example, cash flow hedge).


Summary of Derivative Instruments That Receive Hedge Accounting Treatment (part 1) Amount of Mark-to-Market Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) (in millions)
			Three Months Ended December 31
Derivatives in Cash Flow Hedging Relationship	Objective of Hedge Transaction	Accounting for Derivative Hedging Instrument	2020		2019
Currency swaps	To protect against changes in cash flows caused by changes in foreign currency exchange rates (exchange rate risk)	Unrealized gains and losses are recorded in AOCI and reclassified to Interest expense to the extent they are offset by gains and losses on the hedged transaction	$	101	$	76


Summary of Derivative Instruments That Do Not Receive Hedge Accounting Treatment Amount of Gain (Loss) Recognized in Income on Derivatives(1)
			Three Months Ended December 31
Derivative Type	Objective of Derivative(2)	Accounting for Derivative Instrument	2020		2019
Interest rate swaps	To fix short-term debt variable rate to a fixed rate (interest rate risk)	Mark-to-market gains and losses are recorded as regulatory assets or liabilities Realized gains and losses are recognized in Interest expense when incurred during the settlement period and are presented in operating cash flow	$	(29)	$	(21)

Commodity contract derivatives	To protect against fluctuations in market prices of purchased coal or natural gas (price risk)	Mark-to-market gains and losses are recorded as regulatory assets or liabilities Realized gains and losses due to contract settlements are recognized in Fuel expense as incurred	—		1

(1) All of TVA's derivative instruments that do not receive hedge accounting treatment have unrealized gains (losses) that would otherwise be recognized in income but instead are deferred as regulatory assets and liabilities. As such, there were no related gains (losses) recognized in income for these unrealized gains (losses) for the three months ended December 31, 2020 and 2019.

Fair Values of TVA Derivatives

(in millions)

At December 31, 2020

At September 30, 2020

Derivatives That Receive Hedge Accounting Treatment:

Balance

Balance Sheet Presentation

Balance

Balance Sheet Presentation

Currency swaps

£200 million Sterling

(60)

Accounts payable and accrued liabilities $(60)

(78)

Accounts payable and

accrued liabilities $(78)

£250 million Sterling

(22)

Accounts payable and accrued liabilities $(4); Other long-term liabilities $(18)

(63)

Accounts payable and accrued liabilities $(5); Other long-term liabilities $(58)

£150 million Sterling

(26)

Accounts payable and accrued liabilities $(3); Other long-term liabilities $(23)

(68)

Accounts payable and

accrued liabilities $(3); Other long-term liabilities $(65)

Derivatives That Do Not Receive Hedge Accounting Treatment:

Balance

Balance Sheet Presentation

Balance

Balance Sheet Presentation

Interest rate swaps

$1.0 billion notional

(1,332)

Accounts payable and
accrued liabilities $(64); Accrued interest $(17);
Other long-term liabilities
$(1,251)

(1,449)

Accounts payable and

accrued liabilities $(43); Accrued interest $(37); Other long-term liabilities $(1,369)

$476 million notional

(533)

Accounts payable and
accrued liabilities $(30); Accrued interest $(1);
Other long-term liabilities
$(502)

(588)

Accounts payable and

accrued liabilities $(22); Accrued interest $(10);

Other long-term liabilities

$(556)

$42 million notional(1)

(4)

Accounts payable and
accrued liabilities $(2); Accrued interest $(1);
Other long-term liabilities
$(1)

(4)

Accounts payable and

accrued liabilities $(2); Other long-term liabilities $(2)

Commodity contract derivatives

Other current assets $12; Other long-term assets $13 Accounts payable and accrued liabilities $(3)

Other current assets $26; Other long-term assets $23; Accounts payable and accrued liabilities $(3)

When the dollar strengthens against the British pound sterling, the exchange gain on the Bond liability and related accrued interest is offset by an equal amount of loss on the swap contract that is reclassified out of AOCI. Conversely, the exchange loss on the Bond liability and related accrued interest is offset by an equal amount of gain on the swap contract that is reclassified out of AOCI. All such exchange gains or losses on the Bond liability and related accrued interest are included in Long-term debt, net and Accounts payable and accrued liabilities, respectively. The offsetting exchange losses or gains on the swap contracts are recognized in AOCI. If any gain (loss) were to be incurred as a result of the early termination of the foreign currency swap contract, the resulting income (expense) would be amortized over the remaining life of the associated Bond as a component of Interest expense. The values of the currency swap liabilities are included in Accounts payable and accrued liabilities and Other long-term liabilities on the Consolidated Balance Sheets.

Interest Rate Derivatives. Generally TVA uses interest rate swaps to fix variable short-term debt to a fixed rate, and TVA uses regulatory accounting treatment to defer the mark-to-market ("MtM") gains and losses on its interest rate swaps. The net deferred unrealized gains and losses are classified as regulatory assets or liabilities on TVA's Consolidated Balance Sheets and are included in the ratemaking formula when gains or losses are realized. The values of these derivatives are included in Accounts payable and accrued liabilities and Other long-term liabilities on the Consolidated Balance Sheets, and realized gains and losses, if any, are included on TVA's Consolidated Statements of Operations. For the three months ended December 31,

2020 and 2019, the changes in fair market value of the interest rate swaps resulted in the deferral of unrealized gains of $143 million and $171 million, respectively. TVA may hold short-term debt balances lower than the notional amount of the interest rate swaps from time to time due to changes in business conditions and other factors. While actual balances vary, TVA generally plans to maintain average balances of short-term debt equal to or in excess of the combined notional amount of the interest rate swaps.

Commodity Derivatives. TVA enters into certain derivative contracts for natural gas that require physical delivery of the contracted quantity of the commodity. TVA marks to market natural gas contracts and defers the fair market values as regulatory assets or liabilities on a gross basis. At December 31, 2020, TVA's natural gas contract derivatives had terms of up to four years.


Derivative Assets and Liabilities(1) (in millions)
	At December 31, 2020		At September 30, 2020
Assets

Commodity derivatives not subject to master netting or similar arrangement	$	25	$	49


Liabilities
Currency swaps(2)	$	108	$	209
Interest rate swaps(2)	1,869		2,041
Total derivatives subject to master netting or similar arrangement	1,977		2,250
Commodity derivatives not subject to master netting or similar arrangement	3		3
Total liabilities	$	1,980	$	2,253

(1) Offsetting amounts primarily include counterparty netting of derivative contracts, margin account deposits for futures commission merchants transactions, and cash collateral received or paid in accordance with the accounting guidance for derivatives and hedging transactions. There were no offsetting amounts on TVA's Consolidated Balance Sheets at either December 31, 2020, or September 30, 2020.

Investment Fund Derivatives. Investment funds consist primarily of funds held in the Nuclear Decommissioning Trust ("NDT"), the Asset Retirement Trust ("ART"), the Supplemental Executive Retirement Plan ("SERP"), and the TVA Deferred Compensation Plan ("DCP"). See Note 14 — Fair Value Measurements — Investment Funds for a discussion of the trusts, plans, and types of investments. The NDT and ART may invest in derivative instruments which may include swaps, futures, options, forwards, and other instruments. At December 31, 2020, and September 30, 2020, the NDT held investments in forward contracts to purchase debt securities. The fair values of these derivatives were in net asset positions totaling $11 million and $13 million at December 31, 2020, and September 30, 2020, respectively.

Collateral. TVA's interest rate swaps and currency swaps contain contract provisions that require a party to post collateral (in a form such as cash or a letter of credit) when the party's liability balance under the agreement exceeds a certain threshold. At December 31, 2020, the aggregate fair value of all derivative instruments with credit-risk related contingent features that were in a liability position was $2.0 billion. TVA's collateral obligations at December 31, 2020, under these arrangements were approximately $1.4 billion, for which TVA had posted approximately $1.4 billion in letters of credit. These letters of credit reduce the available balance under the related credit facilities. TVA's assessment of the risk of its nonperformance includes a reduction in its exposure under the contract as a result of this posted collateral.

TVA may be exposed to certain risks when a counterparty has the potential to fail to meet its obligations in accordance with agreed terms. These risks may be related to credit, operational, or nonperformance matters. To mitigate certain counterparty risk, TVA analyzes the counterparty's financial condition prior to entering into an agreement, establishes credit limits, monitors the appropriateness of those limits, as well as any changes in the creditworthiness of the counterparty, on an ongoing basis, and when required, employs credit mitigation measures, such as collateral or prepayment arrangements and master purchase and sale agreements.

Customers. TVA is exposed to counterparty credit risk associated with trade accounts receivable from delivered power sales to LPCs, and from industries and federal agencies directly served, all located in the Tennessee Valley region. Of the $1.2 billion and $1.4 billion of receivables from power sales outstanding at December 31, 2020, and September 30, 2020, respectively, nearly all counterparties were rated investment grade. The obligations of customers that are not investment grade are secured by collateral. TVA is also exposed to risk from exchange power arrangements with a small number of investor-owned regional utilities related to either delivered power or the replacement of open positions of longer-term purchased power or fuel agreements. TVA believes its policies and procedures for counterparty performance risk reviews have generally protected TVA against significant exposure related to market and economic conditions. See Note 1 — Summary of Significant Accounting Policies — Allowance for Uncollectible Accounts, Note 3 — Accounts Receivable, Net, and Note 6 — Other Long-Term Assets.

maintenance, and capital programs. If one of TVA's fuel or purchased power suppliers fails to perform under the terms of its contract with TVA, TVA might lose the money that it paid to the supplier under the contract and have to purchase replacement fuel or power on the spot market, perhaps at a significantly higher price than TVA was entitled to pay under the contract. In addition, TVA might not be able to acquire replacement fuel or power in a timely manner and thus might be unable to satisfy its own obligations to deliver power.

Coal. To help ensure a reliable supply of coal, TVA had coal contracts with multiple suppliers at December 31, 2020. The contracted supply of coal is sourced from multiple geographic regions of the U.S. and is to be delivered via various transportation methods (e.g., barge, rail, and truck). Emerging technologies, environmental regulations, and low natural gas prices have contributed to weak demand for coal. As a result, coal suppliers are facing increased financial pressure, which has led to relatively poor credit ratings and bankruptcies. Continued difficulties by coal suppliers, including impacts from the COVID-19 pandemic, could result in consolidations, additional bankruptcies, restructuring, contract renegotiations, or other scenarios.

Nuclear Fuel. Nuclear fuel is obtained predominantly through long-term uranium concentrate supply contracts, contracted conversion services, contracted enrichment services, or a combination thereof, and contracted fuel fabrication services. The supply markets for uranium concentrates and certain nuclear fuel services are subject to price fluctuations and availability restrictions. Supply market conditions may make procurement contracts subject to credit risk related to the potential nonperformance of counterparties. In the event of nonperformance by these or other suppliers, TVA believes that replacement uranium concentrate and nuclear fuel services can be obtained, although at prices that may be unfavorable when compared to the prices under the current supply agreements.

Purchased Power. TVA has a power purchase agreement that expires on March 31, 2032, with a supplier of electricity for 440 megawatts ("MW") of summer net capability from a lignite-fired generating plant. TVA has determined that the supplier has the equivalent of a non-investment grade credit rating; therefore, the supplier has provided credit assurance to TVA under the terms of the agreement.

Other Suppliers. At this time, TVA has experienced minimal impacts due to force majeure events, with the exception of a manufacturing delay for a major turbine component. A mitigation strategy was developed by TVA and the vendor to reduce projected delays and impacts to TVA's outage schedule. TVA will continue to monitor the supply base and remain in contact with suppliers to identify potential risks.

Derivative Counterparties. TVA has entered into physical and financial contracts that qualify as derivatives for hedging purposes, and TVA's NDT, ART, and qualified defined benefit pension plan have entered into derivative contracts for investment purposes. If a counterparty to one of the physical or financial derivative transactions defaults, TVA might incur substantial costs in connection with entering into a replacement transaction. If a counterparty to the derivative contracts into which the NDT, the ART, or the qualified pension plan have entered for investment purposes defaults, the value of the investment could decline significantly or perhaps become worthless. TVA has concentrations of credit risk from the banking, coal, and gas industries because multiple companies in these industries serve as counterparties to TVA in various derivative transactions. At December 31, 2020, all of TVA's currency swaps and interest rate swaps as well as all of the derivatives in the NDT and ART were with banking counterparties whose Moody's credit ratings were A3 or higher.

TVA classifies qualified forward natural gas contracts as derivatives. See Derivatives Not Receiving Hedge Accounting Treatment above. At December 31, 2020, the natural gas contracts were with counterparties whose ratings ranged from B1 to A2. TVA recognizes the slowdown in demand and the impacts on the oil and gas industry as a result of the COVID-19 pandemic. TVA will continue to monitor the impacts and affected credit ratings and enforce contract performance assurance provisions when applicable.