Other Long-Term Liabilities

Other long-term liabilities consist primarily of liabilities related to certain derivative agreements, liabilities for environmental remediation, and liabilities under agreements related to compliance with certain environmental regulations. See Note 17 — Legal Proceedings — Environmental Agreements. The table below summarizes the types and amounts of Other long-term liabilities:



Other Long-Term Liabilities
	At June 30, 2018		At September 30, 2017
Interest rate swap liabilities	$	1,176	$	1,418
Gallatin coal combustion residual facilities liability	875		880
Capital lease obligations	179		182
EnergyRight^® financing obligation	105		115
Currency swap liabilities	73		92
Commodity contract derivative liabilities	14		9
Membership interests of VIE subject to mandatory redemption	29		30
Environmental agreements liability	11		13
Other	304		316
Total other long-term liabilities	$	2,766	$	3,055

Interest Rate Swap Liabilities. TVA uses interest rate swaps to fix variable short-term debt to a fixed rate. The values of these derivatives are included in Accounts payable and accrued liabilities and Other long-term liabilities on the consolidated balance sheets. As of June 30, 2018, and September 30, 2017, the carrying amount of the interest rate swap liabilities reported in Accounts payable and accrued liabilities was approximately $78 million and $93 million, respectively. See Note 13 — Derivatives Not Receiving Hedge Accounting Treatment — Interest Rate Derivatives for information regarding the associated interest rate swap liabilities.

Gallatin Coal Combustion Residual Facilities Liability. The estimated cost of the potential Gallatin CCR project is approximately $900 million. The current and long-term portions of the resulting obligation are reported in Accounts payable and accrued liabilities and Other long-term liabilities, respectively, on TVA's consolidated balance sheets. As of June 30, 2018, and September 30, 2017, related liabilities of $20 million and $19 million, respectively, were recorded in Accounts payable and accrued liabilities. See Note 8 for information regarding the Gallatin CCR facilities.

EnergyRight^®Financing Obligation. TVA purchases certain loans receivable from its LPCs in association with the EnergyRight^® Solutions program. The current and long-term portions of the resulting financing obligation are reported in Accounts payable and accrued liabilities and Other long-term liabilities, respectively, on TVA's consolidated balance sheets. As of June 30, 2018, and September 30, 2017, the carrying amount of the financing obligation reported in Accounts payable and accrued liabilities was approximately $26 million and $29 million, respectively. See Note 5 for information regarding the associated loans receivable and for details regarding the EnergyRight^® Solutions program.