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United States. Federal Energy Regulatory Commission

Mid-Atlantic Interstate Transmission, LLC Submits Supplemental Filing to Federal Energy Regulatory Commission

Strategic Insights

— 1 min read

Mid-Atlantic Interstate Transmission, LLC, a transmission owning member of the PJM Interconnection, has submitted a supplemental filing to the Federal Energy Regulatory Commission (FERC) to update a previously accepted filing. The filing includes two Interconnection Agreements, one amended and one new, which were inadvertently omitted from the original submission. The agreements are tied to a Notice of Cancellation for a previously approved agreement between Mid-Atlantic Interstate Transmission, Keystone Appalachian Transmission Company, and The Potomac Edison Company.

Key Takeaways:

  • The supplemental filing includes two Interconnection Agreements, one amended and one new, which were missing PJM signature pages from the original submission.
  • The Interconnection Agreements are tied to a Notice of Cancellation for a previously approved agreement between Mid-Atlantic Interstate Transmission, Keystone Appalachian Transmission Company, and The Potomac Edison Company.
  • FERC staff requested the supplemental filing to include the missing signature pages, which are included in the updated submission.
  • The applicant, Mid-Atlantic Interstate Transmission, LLC, has requested that FERC accept the supplemental filing to update the original submission.
  • The supplemental filing was submitted on September 10, 2025.
  • Deborah Jacobson, Attorney for FirstEnergy Corp., signed the supplemental filing on behalf of the applicant.

Statistics:

  • 2 Interconnection Agreements were submitted as part of the supplemental filing.
  • 1 Notice of Cancellation was referenced in the supplemental filing.
  • 1 amended agreement was included in the supplemental filing, designated as Service Agreement No. 7182.
  • 1 new agreement was included in the supplemental filing, designated as Service Agreement No. 7356.
  • The supplemental filing was submitted on September 10, 2025.
  • The original filing in Docket No. ER25-2986-000 was filed on July 28, 2025.

Sources:

  • Mid-Atlantic Interstate Transmission, LLC, Supplemental Filing of Two (2) Interconnection Agreements and a Notice of Cancellation in FERC Docket No. ER25-2986-000 (September 10, 2025)

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