Combined Notice of Filings #1

Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Department of Energy Federal Energy Regulatory Commission Take notice that the Commission received the following electric corporate filings: Docket Numbers: EC26-69-000. Applicants: AEP Indiana Michigan Transmission Company, Inc., Mammoth North LLC. Description: Second Supplement to 03/04/2026, Joint Application for Authorization Under Section 203 of the Federal Power Act of AEP Indiana Michigan Transmission Company, Inc., et al. Filed Date: 6/1/26. Accession Number: 20260601-5393. Comment Date: 5 p.m. ET 6/11/26. Take notice that the Commission received the following Complaints and Compliance filings in EL Dockets: Docket Numbers: EL26-55-000; ER10-2564-016; ER10-2600-016; ER10-2289-016. Applicants: UniSource Energy Development Company, UNS Electric, Inc., Tucson Electric Power Company, Tucson Electric Power Company. Description: Tucson Electric Power Company, et al. submit Response to 04/03/2026 Show Cause Order. Filed Date: 5/29/26. Accession Number: 20260529-5420. Comment Date: 5 p.m. ET 6/22/26. Take notice that the Commission received the following electric rate filings: Docket Numbers: ER24-3030-002. Applicants: Panther Creek Power Operating, LLC. Description: Refund Report: Panther Creek Power Operating LLC submits refund report. Filed Date: 6/3/26. Accession Number: 20260603-5171. Comment Date: 5 p.m. ET 6/24/26. Docket Numbers: ER24-3031-000. Applicants: Scrubgrass Reclamation Company, L.P. Description: Refund Report: Scrubgrass Reclamation Company L.P submits refun…