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Electric Power Supply Association Seeks to Intervene in High Impact Load Tariff Filing

Strategic Insights

— 1 min read

The Electric Power Supply Association (EPSA) has submitted a motion to intervene in the Federal Energy Regulatory Commission (FERC) proceeding ER25-3316-000, seeking to participate in Tri-State Generation and Transmission Association's (Tri-State) filing of a High Impact Load Tariff. EPSA, representing competitive power suppliers in the U.S., aims to ensure that the interests of competitive power suppliers are represented in the development of transmission tariffs.

Key Takeaways:

  • EPSA is a national trade association representing competitive power suppliers in the U.S., providing reliable and competitively priced electricity from environmentally responsible facilities.
  • EPSA seeks to intervene in the FERC proceeding ER25-3316-000 to address issues related to the interconnection of High Impact Loads over 45 MW to Tri-State's member systems.
  • The proposed High Impact Load Tariff addresses broad and general applicability regarding the interconnection of large load customers, making EPSA's participation crucial to ensuring the interests of competitive power suppliers.
  • Tri-State's filing remains in an early stage, and granting EPSA's late intervention will not disrupt the proceeding.
  • EPSA agrees to accept the record of this proceeding as of the date of its late intervention.
  • EPSA has been active in many FERC proceedings regarding transmission tariffs, including emerging provisions related to large loads, co-location of large loads, and issues related to the emergence of data centers on the interstate power system.

Statistics:

  • 45 MW: The minimum capacity threshold for High Impact Loads requiring interconnection to Tri-State's member systems.
  • 10/16/2025: The date on which EPSA submitted its out-of-time motion to intervene in the FERC proceeding ER25-3316-000.
  • 8/28/2025: The date on which Tri-State submitted their tariff filing for the High Impact Load Tariff.
  • 4:46:15 PM: The time at which EPSA submitted its out-of-time motion to intervene on 10/16/2025.
  • 1669455_Interv.txt: The accession number of the EPSA document submitted to FERC.
  • 20251016-5169: The accession number of the EPSA document submission to FERC.

Sources:

  • Electric Power Supply Association, "Submission Description: (doc-less) Out-of-Time Motion to Intervene of Electric Power Supply Association under ER25-3316-000" (10/16/2025)
  • Tri-State Generation and Transmission Association, Inc., "Filing: Tri-State Generation and Transmission Association, Inc. submits tariff filing per 35.13(a)(2)(iii): High Impact Load Tariff" (8/28/2025)

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