Energy Harbor, LLC v. FERC

United States Court of Appeals for the District of Columbia Circuit · July 11, 2025 · No. 24-1092

Summary

This D.C. Circuit opinion reviews a Federal Energy Regulatory Commission order denying Energy Harbor, LLC's complaint regarding over $12 million in nonperformance penalties assessed by PJM Interconnection. The court analyzes whether PJM correctly applied its Tariff's penalty exemption for generators undergoing approved maintenance outages during a severe winter storm. Finding that PJM properly calculated expected performance based on the facility's total installed capacity rather than individual generating units, the court affirms FERC's decision and denies Energy Harbor's petition for judicial review.

Court
United States Court of Appeals for the District of Columbia Circuit
Writing for the Court
Randolph; Pillard; Garcia
Jurisdiction
United States Court of Appeals for the District of Columbia Circuit
Decision date
July 11, 2025
Docket number
24-1092
Procedural posture
Petition for review of FERC order denying Energy Harbor's complaint and rehearing request.
Standard of review
Substantial deference to FERC's interpretation of the tariff under the APA.
Precedential value
published
Parties
Energy Harbor, LLC v. Federal Energy Regulatory Commission
Disposition
denied

Topics

administrative lawjudicial review of agency actionstatutory interpretation

Practice areas

administrative lawenergy lawcommercial litigation

Questions Presented

  1. Whether PJM correctly applied the Section 10A(d) exemption to Energy Harbor’s performance shortfall.
  2. Whether the D.C. Circuit should defer to FERC’s interpretation of the tariff under the APA.

Holdings

  1. The court held that PJM correctly interpreted Section 10A(d); the maintenance outage was not the sole cause of the performance shortfall, so the exemption did not apply.
  2. The court affirmed that substantial deference is owed to FERC’s reasonable interpretation of ambiguous tariffs.

Key quotations

PJM correctly evaluated whether the maintenance outage reduced the Sammis Plant’s Installed Capacity enough to constitute the “sole” cause of the Performance Shortfall. (at end of opinion)

Factual background

PJM assessed $12.1 million in penalties against Energy Harbor for nonperformance during a winter storm, despite a maintenance outage and forced outages at the Sammis Plant. The dispute centered on whether Section 10A(d) of PJM's tariff excused the shortfall because of the maintenance outage.

Procedural history

Energy Harbor filed a complaint with FERC challenging PJM penalties; FERC denied the complaint and a rehearing request. Energy Harbor then petitioned the D.C. Circuit for review.

Court Document

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