States and utilities adopt large-load tariffs for data centers

SEPA and the NC Clean Energy Technology Center (NCCETC) updated the Database of Emerging Large-Load Tariffs (DELTa) on March 31, 2026.

• Update details: DELTa now summarizes and analyzes 77 approved and proposed tariffs and service rules across 60 utilities (including 51 approved and 26 proposed). Key dataset metrics include 36 states with tracked tariffs, 56% of tariffs specifying thresholds > 20 MW, and 14% specifying minimum loads of 100 MW.
• Policy and regulatory actions: The note documents recent state actions and proposals: Pennsylvania PUC proposed a model tariff (minimum demand 50 MW or 100 MW in aggregate; 5-year minimum contract term; 3–5 year ramp; 80% minimum billing demand; up to 20% post-term load reduction; financial security and hardship fund contributions); New York PSC opened an Energize NY proceeding (stakeholder comments due May 13, 2026); North Carolina Task Force interim report (Feb 2026) recommends large-load tariff options and alternative capacity procurement; other actions include Utah S.B. 132 (March 2025, 100 MW threshold), Texas S.B. 6 (June 2025), California S.B. 57 (Oct 2025, CPUC findings due Jan 1, 2027), and Missouri executive order (Jan 2026). FERC’s ANOPR action on large-load interconnection reforms is expected by June 2026.