Kentucky Utilities Fuel Adjustment Clause Information Request

COMMONWEALTH OF KENTUCKY BEFORE THE PUBLIC SERVICE COMMISSION In the Matter of:

COMMISSION STAFF'S FOURTH REQUEST FOR INFORMATION TO

KENTUCKY UTILITIES COMPANY Kentucky Utilities Company (KU), pursuant to 807 KAR 5:001, shall file with the Commission an electronic version of the following information. The information requested is due on May 1, 2026. The Commission directs KU to the Commission's July 22, 2021 Order in Case No. 2020-00085 regarding filings with the Commission. Electronic 1 documents shall be in portable document format (PDF), shall be searchable, and shall be appropriately bookmarked. Each response shall include the question to which the response is made and shall include the name of the witness responsible for responding to the questions related to the information provided. Each response shall be answered under oath or, for representatives of a public or private corporation or a partnership or association or a governmental agency, be accompanied by a signed certification of the preparer or the person supervising the preparation of the response on behalf of the entity that the

Case No. 2020-00085, Electronic Emergency Docket Related to the Novel Coronavirus COVID-119 (Ky. PSC July 22, 2021), Order (in which the Commission ordered that for case filings made on and after March 16, 2020, filers are NOT required to file the original physical copies of the filings required by 807 KAR AN ELECTRONIC EXAMINATION OF THE ) 5:001, Section 8).

APPLICATION OF THE FUEL ADJUSTMENT ) CASE NO. CLAUSE OF KENTUCKY UTILITIES COMPANY ) 2025-00340 FROM NOVEMBER 1, 2022 THROUGH ) OCTOBER 31, 2024 )

response is true and accurate to the best of that person's knowledge, information, and

belief formed after a reasonable inquiry. KU shall make timely amendment to any prior response if KU obtains information that indicates the response was incorrect or incomplete when made or, though correct or complete when made, is now incorrect or incomplete in any material respect. For any request to which KU fails or refuses to furnish all or part of the requested information, KU shall provide a written explanation of the specific grounds for its failure to completely and precisely respond. Careful attention shall be given to copied and scanned material to ensure that it is legible. When the requested information has been previously provided in this proceeding in the requested format, reference may be made to the specific location of that information in responding to this request. When applicable, the requested information shall be separately provided for total company operations and jurisdictional operations. When filing a paper containing personal information, KU shall, in accordance with 807 KAR 5:001, Section 4(10), encrypt or redact the paper so that personal information cannot be read.

1. Refer to the Direct Testimony of Andrea M. Fackler, page 6 lines 5-11. If the Commission were to deny KU's proposal to use the weighted average actual per unit fuel cost for the February 2023 expense month for the base period and based on the information currently in the record, explain whether KU would select February 2023 actual fuel cost of $0.03067 per kWh as the representative fuel cost for its two-year base fuel rate.

-2- Case No. 2025-00340

________________________ Linda C. Bridwell, PE Executive Director Public Service Commission 211 Sower Blvd. Frankfort, KY 40601-8294

DATED _____________________ APR 16 2026 cc: Parties of Record

Case No. 2025-00340

Service List for 2025-00340

• Andrea M. Fackler Manager, Revenue Requirement
  LG&E and KU Energy LLC 220 West Main Street Louisville, KY 40202

• Honorable Allyson K Sturgeon Vice President and Deputy General Counsel-Regulatory and PPL LG&E and KU Energy LLC 220 West Main Street Louisville, KY 40202

• Robert Conroy Vice President, State Regulation and Rates LG&E and KU Energy LLC 220 West Main Street Louisville, KY 40202

• Kentucky Utilities Company 220 W. Main Street P. O. Box 32010 Louisville, KY 40232-2010

• Sara Judd Senior Corporate Attorney LG&E and KU Energy LLC 220 West Main Street Louisville, KY 40202

• Denotes served by Email