| Regulatory Assets and Liabilities |
The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PPL | | PPL Electric | | LG&E | | KU | | June 30, 2026 | | December 31, 2025 | | June 30, 2026 | | December 31, 2025 | | June 30, 2026 | | December 31, 2025 | | June 30, 2026 | | December 31, 2025 | | Current Regulatory Assets: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rate adjustment mechanisms | $ | 80 | | | $ | 86 | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | | | | | | | | | | | | | | | | | Renewable energy certificates | 23 | | | 21 | | | — | | | — | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Storm damage expense rider | 50 | | | 53 | | | 50 | | | 53 | | | — | | | — | | | — | | | — | | | Gas supply clause | 39 | | | 10 | | | — | | | — | | | 39 | | | 10 | | | — | | | — | | | | | | | | | | | | | | | | | | | Transmission service charge | 61 | | | 61 | | | — | | | — | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TCJA | — | | | 40 | | | — | | | 40 | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Other | 26 | | | 37 | | | 4 | | | 19 | | | 9 | | | 9 | | | 1 | | | 1 | | | Total current regulatory assets | $ | 279 | | | $ | 308 | | | $ | 54 | | | $ | 112 | | | $ | 48 | | | $ | 19 | | | $ | 1 | | | $ | 1 | | | | | | | | | | | | | | | | | | | Noncurrent Regulatory Assets: | | | | | | | | | | | | | | | | | Defined benefit plans | $ | 943 | | | $ | 961 | | | $ | 471 | | | $ | 477 | | | $ | 203 | | | $ | 212 | | | $ | 142 | | | $ | 144 | | | Plant outage costs | 20 | | | 23 | | | — | | | — | | | 4 | | | 5 | | | 16 | | | 18 | | | Net metering | 165 | | | 164 | | | — | | | — | | | — | | | — | | | — | | | — | | | Environmental cost recovery | 99 | | | 102 | | | — | | | — | | | — | | | — | | | — | | | — | | | Storm costs | 109 | | | 113 | | | 37 | | | 42 | | | 22 | | | 24 | | | 34 | | | 38 | | | Unamortized loss on debt | 17 | | | 18 | | | 2 | | | 2 | | | 8 | | | 8 | | | 5 | | | 6 | | | | | | | | | | | | | | | | | | | Terminated interest rate swaps | 46 | | | 47 | | | — | | | — | | | 27 | | | 28 | | | 19 | | | 19 | | | Accumulated cost of removal of utility plant | 202 | | | 184 | | | 202 | | | 184 | | | — | | | — | | | — | | | — | | | AROs | 255 | | | 263 | | | — | | | — | | | 72 | | | 73 | | | 183 | | | 190 | | | | | | | | | | | | | | | | | | | RAR | 72 | | | 76 | | | — | | | — | | | 72 | | | 76 | | | — | | | — | | | | | | | | | | | | | | | | | | | Gas line inspections | 24 | | | 24 | | | — | | | — | | | 22 | | | 22 | | | 2 | | | 2 | | | Advanced metering infrastructure | 64 | | | 67 | | | — | | | — | | | 27 | | | 28 | | | 37 | | | 39 | | | IT system costs | 60 | | | 18 | | | 28 | | | 18 | | | 16 | | | — | | | 16 | | | — | | | TCJA | 30 | | | — | | | 30 | | | — | | | — | | | — | | | — | | | — | | | Other | 42 | | | 32 | | | 1 | | | 2 | | | 4 | | | 6 | | | 9 | | | 11 | | | Total noncurrent regulatory assets | $ | 2,148 | | | $ | 2,092 | | | $ | 771 | | | $ | 725 | | | $ | 477 | | | $ | 482 | | | $ | 463 | | | $ | 467 | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PPL | | PPL Electric | | LG&E | | KU | | June 30, 2026 | | December 31, 2025 | | June 30, 2026 | | December 31, 2025 | | June 30, 2026 | | December 31, 2025 | | June 30, 2026 | | December 31, 2025 | | Current Regulatory Liabilities: | | | | | | | | | | | | | | | | | Generation supply charge | $ | 39 | | | $ | 45 | | | $ | 39 | | | $ | 45 | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | Transmission service charge | 13 | | | 17 | | | 13 | | | 17 | | | — | | | — | | | — | | | — | | | Universal service rider | — | | | 17 | | | — | | | 17 | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transmission formula rate | 114 | | | 62 | | | 51 | | | 23 | | | — | | | — | | | — | | | — | | | Rate adjustment mechanisms | 102 | | | 124 | | | — | | | — | | | — | | | — | | | — | | | — | | | Energy efficiency | 28 | | | 26 | | | — | | | — | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | DSM | 20 | | | 21 | | | — | | | — | | | 8 | | | 8 | | | 12 | | | 13 | | | | | | | | | | | | | | | | | | | Revenue decoupling mechanism | 44 | | | 55 | | | — | | | — | | | — | | | — | | | — | | | — | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Other | 7 | | | 9 | | | 3 | | | 1 | | | 2 | | | 5 | | | 3 | | | 3 | | | Total current regulatory liabilities | $ | 367 | | | $ | 376 | | | $ | 106 | | | $ | 103 | | | $ | 10 | | | $ | 13 | | | $ | 15 | | | $ | 16 | | | | | | | | | | | | | | | | | | | Noncurrent Regulatory Liabilities: | | | | | | | | | | | | | | | | | Accumulated cost of removal of utility plant | $ | 1,060 | | | $ | 1,043 | | | $ | — | | | $ | — | | | $ | 350 | | | $ | 334 | | | $ | 415 | | | $ | 415 | | | | | | | | | | | | | | | | | | | Net deferred taxes | 1,742 | | | 1,798 | | | 688 | | | 708 | | | 403 | | | 415 | | | 451 | | | 467 | | | Defined benefit plans | 324 | | | 342 | | | 119 | | | 120 | | | 19 | | | 23 | | | 65 | | | 69 | | | Terminated interest rate swaps | 50 | | | 52 | | | — | | | — | | | 25 | | | 26 | | | 25 | | | 26 | | | | | | | | | | | | | | | | | | | Advanced metering infrastructure | 28 | | | 30 | | | — | | | — | | | 9 | | | 10 | | | 19 | | | 20 | | | Other | 49 | | | 53 | | | — | | | — | | | — | | | 1 | | | — | | | — | | | Total noncurrent regulatory liabilities | $ | 3,253 | | | $ | 3,318 | | | $ | 807 | | | $ | 828 | | | $ | 806 | | | $ | 809 | | | $ | 975 | | | $ | 997 | |
|