The US’s largest clean energy project is generating power [update]

Vestas finished installing its wind turbines at Pattern Energy’s SunZia, the largest clean energy project in the US, last month, and the wind farm has now come online.

April 17, 2026: SunZia Wind has begun testing its turbines as it nears the start of commercial operations in Q2 2025, E&E reported yesterday. Grid Status first reported the news.

Neither the project developer, Pattern Energy, nor the California grid operator has publicized the milestone, and it’s unclear exactly how much power is being transmitted at this time.

On April 13, CAISO, California’s grid, sent a transmission control agreement letter to the Federal Energy Regulatory Commission about Sun Zia.