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Utility Rate Regulation | 3 Months Ended
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Mar. 31, 2018
Regulated Operations [Abstract] |
Utility Rate Regulation | 7. Utility Rate Regulation (All Registrants) The following table provides information about the regulatory assets and liabilities of cost-based rate-regulated utility operations.
| PPL |  | PPL Electric
| March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Current Regulatory Assets: |  |  |  |  |  |  |
Environmental cost recovery | $ | — |  |  | $ | 5 |  |  | $ | — |  |  | $ | — |
Generation formula rate | 2 |  |  | 6 |  |  | — |  |  | — |
Smart meter rider | 15 |  |  | 15 |  |  | 15 |  |  | 15 |
Plant outage costs | 6 |  |  | 3 |  |  | — |  |  | — |
Other | 5 |  |  | 5 |  |  | 1 |  |  | 1 |
Total current regulatory assets (a) | $ | 28 |  |  | $ | 34 |  |  | $ | 16 |  |  | $ | 16 |
Noncurrent Regulatory Assets: |  |  |  |  |  |  |
Defined benefit plans | $ | 866 |  |  | $ | 880 |  |  | $ | 496 |  |  | $ | 504 |
Taxes recoverable through future rates | 3 |  |  | 3 |  |  | 3 |  |  | 3 |
Storm costs (b) | 47 |  |  | 33 |  |  | 17 |  |  | — |
Unamortized loss on debt | 51 |  |  | 54 |  |  | 27 |  |  | 29 |
Interest rate swaps | 22 |  |  | 26 |  |  | — |  |  | — |
Terminated interest rate swaps | 91 |  |  | 92 |  |  | — |  |  | — |
Accumulated cost of removal of utility plant | 176 |  |  | 173 |  |  | 176 |  |  | 173 |
AROs | 247 |  |  | 234 |  |  | — |  |  | — |
Act 129 compliance rider | 7 |  |  | — |  |  | 7 |  |  | — |
Other | 9 |  |  | 9 |  |  | — |  |  | — |
Total noncurrent regulatory assets | $ | 1,519 |  |  | $ | 1,504 |  |  | $ | 726 |  |  | $ | 709 |
| PPL |  | PPL Electric
| March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Current Regulatory Liabilities: |  |  |  |  |  |  |
Generation supply charge | $ | 33 |  |  | $ | 34 |  |  | $ | 33 |  |  | $ | 34 |
Transmission service charge | 16 |  |  | 9 |  |  | 16 |  |  | 9 |
Environmental cost recovery | 18 |  |  | 1 |  |  | — |  |  | — |
Universal service rider | 24 |  |  | 26 |  |  | 24 |  |  | 26 |
Transmission formula rate | 10 |  |  | 9 |  |  | 10 |  |  | 9 |
Fuel adjustment clause | 2 |  |  | 3 |  |  | — |  |  | — |
TCJA bill credit (c) | 34 |  |  | — |  |  | — |  |  | — |
Storm damage expense rider | 12 |  |  | 8 |  |  | 12 |  |  | 8 |
Other | 9 |  |  | 5 |  |  | — |  |  | — |
Total current regulatory liabilities | $ | 158 |  |  | $ | 95 |  |  | $ | 95 |  |  | $ | 86 |
Noncurrent Regulatory Liabilities: |  |  |  |  |  |  |
Accumulated cost of removal of utility plant | $ | 677 |  |  | $ | 677 |  |  | $ | — |  |  | $ | — |
Power purchase agreement - OVEC (d) | 66 |  |  | 68 |  |  | — |  |  | — |
Net deferred taxes (e) | 1,839 |  |  | 1,853 |  |  | 660 |  |  | 668 |
Defined benefit plans | 28 |  |  | 27 |  |  | — |  |  | — |
Terminated interest rate swaps | 74 |  |  | 74 |  |  | — |  |  | — |
Other | 5 |  |  | 5 |  |  | 2 |  |  | — |
Total noncurrent regulatory liabilities | $ | 2,689 |  |  | $ | 2,704 |  |  | $ | 662 |  |  | $ | 668 |
| LKE |  | LG&E |  | KU
| March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Current Regulatory Assets: |  |  |  |  |  |  |  |  |  |  |
Environmental cost recovery | $ | — |  |  | $ | 5 |  |  | $ | — |  |  | $ | 5 |  |  | $ | — |  |  | $ | — |
Generation formula rate | 2 |  |  | 6 |  |  | — |  |  | — |  |  | 2 |  |  | 6 |
Plant outage costs | 6 |  |  | 3 |  |  | 6 |  |  | 3 |  |  | — |  |  | — |
Other | 4 |  |  | 4 |  |  | 4 |  |  | 4 |  |  | — |  |  | — |
Total current regulatory assets | $ | 12 |  |  | $ | 18 |  |  | $ | 10 |  |  | $ | 12 |  |  | $ | 2 |  |  | $ | 6 |
Noncurrent Regulatory Assets: |  |  |  |  |  |  |  |  |  |  |
Defined benefit plans | $ | 370 |  |  | $ | 376 |  |  | $ | 230 |  |  | $ | 234 |  |  | $ | 140 |  |  | $ | 142 |
Storm costs | 30 |  |  | 33 |  |  | 16 |  |  | 18 |  |  | 14 |  |  | 15 |
Unamortized loss on debt | 24 |  |  | 25 |  |  | 15 |  |  | 16 |  |  | 9 |  |  | 9 |
Interest rate swaps | 22 |  |  | 26 |  |  | 22 |  |  | 26 |  |  | — |  |  | — |
Terminated interest rate swaps | 91 |  |  | 92 |  |  | 53 |  |  | 54 |  |  | 38 |  |  | 38 |
AROs | 247 |  |  | 234 |  |  | 67 |  |  | 61 |  |  | 180 |  |  | 173 |
Other | 9 |  |  | 9 |  |  | 3 |  |  | 2 |  |  | 6 |  |  | 7 |
Total noncurrent regulatory assets | $ | 793 |  |  | $ | 795 |  |  | $ | 406 |  |  | $ | 411 |  |  | $ | 387 |  |  | $ | 384 |
| LKE |  | LG&E |  | KU
| March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Current Regulatory Liabilities: |  |  |  |  |  |  |  |  |  |  |
Environmental cost recovery | $ | 18 |  |  | $ | 1 |  |  | $ | 7 |  |  | $ | — |  |  | $ | 11 |  |  | $ | 1 |
Fuel adjustment clause | 2 |  |  | 3 |  |  | — |  |  | — |  |  | 2 |  |  | 3 |
Gas line tracker | 2 |  |  | 3 |  |  | 2 |  |  | 3 |  |  | — |  |  | — |
TCJA bill credit (c) | 34 |  |  | — |  |  | 16 |  |  | — |  |  | 18 |  |  | — |
Other | 7 |  |  | 2 |  |  | 4 |  |  | — |  |  | 3 |  |  | 2 |
Total current regulatory liabilities | $ | 63 |  |  | $ | 9 |  |  | $ | 29 |  |  | $ | 3 |  |  | $ | 34 |  |  | $ | 6 |
Noncurrent Regulatory Liabilities: |  |  |  |  |  |  |  |  |  |  |
Accumulated cost of removal of utility plant | $ | 677 |  |  | $ | 677 |  |  | $ | 280 |  |  | $ | 282 |  |  | $ | 397 |  |  | 395 |
Power purchase agreement - OVEC (d) | 66 |  |  | 68 |  |  | 46 |  |  | 47 |  |  | 20 |  |  | 21 |
Net deferred taxes (e) | 1,179 |  |  | 1,185 |  |  | 549 |  |  | 552 |  |  | 630 |  |  | 633 |
Defined benefit plans | 28 |  |  | 27 |  |  | — |  |  | — |  |  | 28 |  |  | 27 |
Terminated interest rate swaps | 74 |  |  | 74 |  |  | 37 |  |  | 37 |  |  | 37 |  |  | 37 |
Other | 3 |  |  | 5 |  |  | — |  |  | 1 |  |  | 3 |  |  | 4 |
Total noncurrent regulatory liabilities | $ | 2,027 |  |  | $ | 2,036 |  |  | $ | 912 |  |  | $ | 919 |  |  | $ | 1,115 |  |  | $ | 1,117 |
(a) | For PPL, these amounts are included in "Other current assets" on the Balance Sheets.
(b) | Storm costs incurred in PPL Electric's territory from a March 2018 storm will be amortized from 2019 through 2021.
(c) | Relates to estimated amounts owed to customers as a result of the reduced U.S. federal corporate income tax rate as enacted by the TCJA, effective January 1, 2018, not yet reflected in customer rates.
(d) | This liability was recorded as an offset to an intangible asset that was recorded at fair value upon the acquisition of LKE by PPL.
(e) | Primarily relates to excess deferred taxes recorded as a result of the TCJA, which reduced the U.S. federal corporate income tax rate effective January 1, 2018, requiring deferred tax balances and the associated regulatory liabilities to be remeasured as of December 31, 2017.
Regulatory Matters Kentucky Activities (PPL, LKE, LG&E and KU) CPCN Filing On January 10, 2018, LG&E and KU filed an application for a CPCN with the KPSC requesting approval to implement Advanced Metering Systems across their Kentucky service territories, including gas operations for LG&E. The full deployment is expected to be completed in 2021 with estimated capital costs of $155 million and $104 million for KU and LG&E electric service and $62 million for LG&E gas service. The full Advanced Metering Systems deployment is expected to result in incremental operation and maintenance costs during the deployment phase of $17 million and $11 million for KU and LG&E electric service and $3 million for LG&E gas service. TCJA Impact on LG&E and KU Rates On December 21, 2017, Kentucky Industrial Utility Customers, Inc. submitted a complaint with the KPSC against LG&E and KU, as well as other utility companies in Kentucky, alleging that their respective rates would no longer be fair, just and reasonable following the enactment of the TCJA reducing the federal corporate tax rate from 35% to 21%. The complaint requested the KPSC to issue an order requiring LG&E and KU to begin deferring, as of January 1, 2018, the revenue requirement effect of all income tax expense savings resulting from the federal corporate income tax reduction, including the amortization of excess deferred income taxes by recording those savings in a regulatory liability account and establishing a process by which the federal corporate income tax savings will be passed back to customers. On January 29, 2018, LG&E, KU, Kentucky Industrial Utility Customers, Inc. and the Office of the Attorney General reached a settlement agreement to commence returning savings related to the TCJA to their customers. The savings will be distributed through their ECR, DSM and LG&E's GLT rate mechanisms beginning in March 2018 and through a new bill credit mechanism from April 1, 2018 through April 30, 2019. The estimated impact of the rate reduction represents approximately $91 million in KU electricity revenues ($70 million through the new bill credit and $21 million through existing rate mechanisms), $69 million in LG&E electricity revenues ($49 million through the new bill credit and $20 million through existing rate mechanisms) and $17 million in LG&E gas revenues (substantially all through the new bill credit) for the period January 2018 through April 2019. Ongoing tax savings are expected to also be addressed in LG&E's and KU's next Kentucky base rate case. LG&E and KU have indicated their intent to file an application for base rate changes during 2018 to be effective during spring 2019. On March 20, 2018, the KPSC issued an order approving, with certain modifications, the settlement agreement reached between LG&E, KU, Kentucky Industrial Utility Customers, Inc. and the Office of the Attorney General. The KPSC estimates that, pursuant to its modifications, electricity revenues would incorporate reductions of approximately $108 million for KU ($87 million through the new bill credit and $21 million through existing rate mechanisms) and $79 million for LG&E ($59 million through the new bill credit and $20 million through existing rate mechanisms). This represents $27 million ($17 million at KU and $10 million at LG&E) in additional reductions from the amounts proposed by the settlement. The KPSC's modifications to the settlement include certain changes in assumptions or inputs used in assessing tax reform or calculating LG&E's and KU's electricity rates. LG&E gas rate reductions were not modified significantly from the amount included in the settlement agreement. On March 26, 2018, LG&E and KU filed a petition for reconsideration and request for hearing with the KPSC, taking exception to the KPSC's modifications and the process, and also requested certain relief from implementing the amounts represented by the additional reductions until the matter is fully resolved. On March 28, 2018, the Office of the Attorney General filed a response to the petition and gave notice of its withdrawal from the settlement agreement. On March 28, 2018, the KPSC issued an Order granting LG&E's and KU's request for reconsideration and amending its March 20, 2018 Order by suspending the approved rates, allowing LG&E and KU, on an interim basis, to return savings related to the TCJA at the rates agreed to in the January 29, 2018 settlement. On March 30, 2018, following receipt of the Attorney General's response, the KPSC issued an Order amending its March 28, 2018 Order to allow the parties to raise any relevant issue related to the TCJA. A hearing on this matter is scheduled for May 24, 2018. LG&E and KU cannot predict the outcome of these proceedings. Additionally, on January 8, 2018, the VSCC ordered KU, as well as other utilities in Virginia, to accrue regulatory liabilities reflecting the Virginia jurisdictional revenue requirement impacts of the reduced federal corporate tax rate. On March 22, 2018, KU reached a settlement agreement regarding its ongoing rate case in Virginia. New rates, inclusive of TCJA impacts, will be effective June 1, 2018. The settlement also stipulates that actual tax savings for the five month period prior to new rates taking effect will be addressed through KU's annual information filing for calendar year 2018. The settlement agreement is subject to review and approval by the VSCC. On April 16, 2018, the hearing examiner issued a report recommending that the VSCC approve the settlement agreement. The TCJA and rate case are not expected to have a significant impact on KU's financial condition or results of operations related to Virginia. On March 15, 2018, the FERC issued a Notice of Inquiry seeking information on whether and how it should address changes relating to accumulated deferred income taxes and bonus depreciation resulting from passage of the TCJA on FERC-jurisdictional rates. LG&E and KU have not made any submission in response to the Notice of Inquiry, but do not anticipate the impact of the TCJA related to their FERC-jurisdictional rates to be significant. Gas Franchise (LKE and LG&E) LG&E’s gas franchise agreement for the Louisville/Jefferson County service area expired in March 2016. In August 2016, LG&E and Louisville/Jefferson County entered into a revised franchise agreement with a 5-year term (with renewal options). The franchise fee may be modified at Louisville/Jefferson County's election upon 60 days' notice. However, any franchise fee is capped at 3% of gross receipts for natural gas service within the franchise area. The agreement further provides that if the KPSC determines that the franchise fee should be recovered from LG&E's Louisville/Jefferson county customers in the franchise areas as a separate line item on their bill, the franchise fee will revert to zero. In August 2016, LG&E filed an application requesting the KPSC to review and rule upon the recoverability of the franchise fee. On March 14, 2018, the KPSC issued an order authorizing the franchise fee to be recovered only from LG&E's Louisville/Jefferson County customers in the franchise area. As a result, the franchise fee will continue to be zero in accordance with the terms of the August 2016, 5-year gas franchise agreement. (PPL and PPL Electric) Pennsylvania Activities TCJA Impact on PPL Electric Rates The PUC issued a Secretarial Letter on February 12, 2018 regarding the TCJA, requesting certain information from regulated utilities and inviting comment from interested parties on potential revision to customer rates as a result of enactment of the TCJA. PPL Electric submitted its response to the Secretarial Letter on March 9, 2018. On March 15, 2018, the PUC issued a Temporary Rates Order which will remain in effect for up to six months and may be extended for an additional six months. The PUC anticipates that the process to determine the manner in which rates will be adjusted in response to the TCJA will require further review and analysis of the responses to data requests, financial information and public comments submitted in response to the Secretarial Letter. For the period ended March 31, 2018, PPL Electric has not recorded an accrual with respect to any potential rate adjustment due to the adoption of the TCJA, as PPL Electric believes it is not probable that a loss has been incurred. Under applicable law, it is reasonably possible that the PUC could seek to adjust rates as of March 15, 2018, the date of the Temporary Rates Order. In that case, PPL Electric's estimated maximum loss exposure would be the excess amounts collected in customer rates related to applicable federal income taxes since the date of the Temporary Rates Order, which amount is immaterial as of March 31, 2018. On March 15, 2018, the FERC issued a Notice of Inquiry seeking information on whether and how it should address changes to FERC-jurisdictional rates relating to accumulated deferred income taxes and bonus depreciation resulting from passage of the TCJA. In a news release issued the same day, the FERC acknowledged that many transmission rates automatically adjust with changes in the tax rates and the adjustments for much of the industry are already taking place. PPL Electric has not made any submission in response to the Notice of Inquiry. On March 16, 2018, PPL Electric filed a waiver pursuant to Rule 207(a)(5) of the Rules of Practice and Procedure of the Federal Energy Regulatory Commission with the FERC to request the incorporation of the changes to the federal income tax rate in its transmission formula rate commencing on June 1, 2018 rather than allowing the TCJA reduction in the federal income tax rate to be initially incorporated in PPL Electric's June 1, 2019 transmission formula rate. The waiver was approved on April 23, 2018 and PPL Electric submitted its transmission formula rate, which was inclusive of the federal income tax rate as set by the TCJA, on April 27, 2018. Other Purchase of Receivables Program (PPL and PPL Electric) In accordance with a PUC-approved purchase of accounts receivable program, PPL Electric purchases certain accounts receivable from alternative electricity suppliers at a discount, which reflects a provision for uncollectible accounts. The alternative electricity suppliers have no continuing involvement or interest in the purchased accounts receivable. Accounts receivable that are acquired are initially recorded at fair value on the date of acquisition. During the three months ended March 31, 2018 and 2017, PPL Electric purchased $376 million and $356 million of accounts receivable from alternate suppliers.

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