Kentucky Public Service Commission

Final Order Entered: 1. The amounts billed to customers by KU through its environmental surcharge for the six-month billing periods ending April 30, 2020; October 31, 2020; October 31, 2021; April 30, 2022; October 31, 2022; and October 31, 2023, and the two-year billing periods ending April 30, 2021, and April 30, 2023, are approved. 2. Beginning in the second full billing month following the date of this Order, KU shall decrease its jurisdictional environmental revenue requirement by $762,326 for four months and then by $762,327 for two months. 3. Beginning in the second full billing month following the date of this Order, KU shall use a WACC of 7.05 percent, a tax gross-up factor of 0.7505, a ROE of 9.35 percent, and an overall grossed up return of 8.73 percent for all its ECR Plans in all future monthly environmental surcharge filings unless directed otherwise by the Commission. 4. KU’s proposed amendments to its Environmental Surcharge Forms are approved as filed. 5. KU’s proposal to incorporate $42,304,190 into base rates for a total rate base ECR component of $74,085,745 to be included in base rates following the methodology previously approved by the Commission and implemented by KU as of the date of this Order is approved. 6. Within 20 days of the date of service of this Order, KU shall file with the Commission, using the Commission’s electronic Tariff Filing System,

Request for Case to be Submitted for Decision Based Upon the Record

Andrea M. Fackler Kentucky Utilities Company

Kentucky Utilities Company’s Responses to the Commission Staff’s Second Request for Information

Andrea M. Fackler Kentucky Utilities Company

Data Request

KU Direct Testimony of Andrea M. Fackler and Response to Information Requested in Appendix B of Commissions Order dated January 3, 2024

Andrea M. Fackler Kentucky Utilities Company

Order Entered nunc pro tunc, that: 1. The case style is amended to read: An Electronic Examination by the Public Service Commission of the Environmental Surcharge Mechanism of Kentucky Utilities for the Six-Month Billing Periods Ending April 30, 2020, October 31, 2020, October 31, 2021, April 30, 2022, October 31, 2022, and October 31, 2023, and for the Two-Year Billing Periods Ending April 30, 2021 and April 30, 2023 2. The first full paragraph on page 2 of the Order is stricken and is replaced with the following language: On its own motion, the Commission initiates (1) the six-month review of LG&E’s environmental surcharge for the billing months ending April 30, 2020, October 31, 2020, October 31, 2021, April 30, 2022, October 31, 2022, and October 31, 2023; and (2) the two-year review of KU’s environmental surcharge for the billing months ending April 30, 2021, and April 30, 2023. 3. All other provisions of the Commission’s January 3, 2024 Order that are not in conflict with the terms of this Order shall remain in effect.

Kentucky Utilities Companys Written Statement in Response to Ordering Paragraph 7 in the Commissions January 3, 2024 Order

Andrea M. Fackler Kentucky Utilities Company

Order Entered: 1. The procedural schedule set forth in Appendix A to this Order shall be followed. 2. On or before the date set forth in the procedural schedule, KU shall file its responses to the information requested in Appendix B attached to this Order. 3. KU shall respond to any additional requests for information propounded by Commission Staff as provided in those requests. 4. Unless otherwise ordered by the Commission, the procedures set forth in 807 KAR 5:001, Section 8, related to the service and electronic filing of papers shall be followed in this proceeding. 5. Any party filing a paper with the Commission shall file an electronic copy in accordance with the electronic filing procedures set forth in 807 KAR 5:001, Section 8. Electronic documents shall be in portable document format (PDF), shall be searchable, and shall be appropriately bookmarked. The Commission directs the parties to the Commission’s July 22, 2021 Order in Case No. 2020-00085² regarding filings with the Commission. 6. If a party objects to the use of electronic filing procedures and the Commission determines that good cause exists to excuse that party from the use of electronic filing procedures, service of documents on that party and by that party shall be made in accordance with 807 KAR 5:001, Section 4(8).