Relating to load forecasts used in transmission planning for the ERCOT power region.

SB 1641 requires electricity providers in Texas' ERCOT power region to verify large projected electricity demand increases (25 megawatts or more at a single location) before including them in grid planning. Utilities must prove each customer will actually use the planned power through methods like lease agreements, security deposits, or customer confirmations. The bill prevents unverified demand forecasts from influencing transmission planning decisions by ERCOT's independent grid operator. This directly affects electric utilities, cooperatives, and municipal power providers managing Texas' electricity grid. The goal is to ensure grid planning reflects realistic future demand, not speculative projections.