On April 24, 2026, FERC issued a Final Rule establishing a Producer Price Index for Finished Goods (PPI-FG) minus 0.55% for oil pipelines. The Commission set the revised PPI-FG for a five-year period, July 1, 2026 through June 30, 2031. In setting the revised index, FERC “trimmed” the utilized cost data to the middle 80% of cost changes, declined to incorporate certain Form 6 cost data that was resubmitted in 2025, and adjusted the page 700 data set to reflect the Commission’s return on equity (ROE) policy changes based on the 2020 index review. The Final Rule is effective June 29, 2026.
FERC Approves Tariff Revisions for ISO-NE Prompt Capacity Market
On March 30, 2026, FERC accepted to ISO New England Inc.’s (ISO-NE) Transmission, Markets and Services Tariff (Tariff) that primarily replaces the existing Forward Capacity Market (FCM) with a prompt capacity market in which an Annual Capacity Auction (ACA) would be held approximately one month before the applicable period for
Senators Introduce REWIRE Act of 2026 to Address Electric Grid Capacity and Planning
On March 2, 2026, U.S. Senators Dave McCormick (R‑PA) and Peter Welch (D‑VT) introduced the Reconductoring Existing Wires for Infrastructure Reliability and Expansion (REWIRE) Act of 2026, a bipartisan bill that would modify federal permitting rules and address upgrades to the existing U.S. electric transmission system. The legislation proposes, among other things, to create a National Environmental Policy Act (NEPA) categorical exclusion for certain grid capacity projects in existing rights-of-way, direct FERC to revise its rules on return on equity for advanced transmission conductors, authorize additional uses of the Department of Energy (DOE) State Energy Program funds, and establish new DOE programs for grid modeling and technical assistance.
FERC Issues CPCN for Transco Southeast Supply Enhancement Project
On January 29, 2025, FERC issued a certificate of public convenience and necessity (CPCN) to Transcontinental Gas Pipe Line Company, LLC (Transco) to construct and operate its Southeast Supply Enhancement Project (Project).
The Project expands Transco’s existing natural gas transmission system in Virginia and North Carolina and will add approximately
D.C. Circuit Declines to Reconsider its Prior Order Restoring an Emergency Affirmative Defense for Emissions Violations Under the Clean Air Act
On January 2, 2026, the D.C. Circuit declined to rehear en banc its prior order restoring the Clean Air Act’s (CAA) Title V affirmative defense to liability for excess emissions caused by emergency events. A group of environmental organizations had petitioned for rehearing en banc, arguing that the court’s reasoning violated D.C. Circuit precedent.