Vistra, Constellation and NRG own 28% of ERCOT's operating capacity
Operating capacity in ERCOT by owner, September 2026 (GW)
Source: ERCOT, EIA, company filings, Modo Energy
Owner = controlling parent at Sep 30, 2026. Includes commercially operational BESS. STP under Constellation (co-owned with CPS Energy and Austin Energy). Broad Reach under ENGIE.