Battery supply is set to overrun PJM's 750 MW regulation market, the largest source of wholesale revenue
PJM regulation requirement vs operating and queued battery capacity (MW)
Source: PJM, Modo Energy
Note: PJM's regulation requirement is about 750 MW; the October 2025 redesign lifted prices, not the requirement. Operating BESS totals 596 MW (198 MW distribution-connected, 398 MW transmission-scale, including the 150 MW Prospect Power energized June 2026). Transition Cycle 1 adds 1,900 MW more, before attrition. As supply grows, the regulation price falls.
MODOENERGY