Largest wind farm in the United States slated to begin commercial operations

The largest wind farm in the country, the SunZia Wind Project in New Mexico, is set to begin commercial operations this month. It has 916 turbines spread across three counties and a total generating capacity of 3,650 megawatts, more than three times the size of the next largest U.S. wind farm. Construction began in 2023 after nearly two decades of permitting, and some turbines were already producing power during testing earlier this year.

Most of the electricity from SunZia won't stay in New Mexico. A new 550-mile transmission line carries the power to Arizona and Southern California, with over 2,100 megawatts headed to the Palo Verde Substation for use in Southern California. This addition pushes New Mexico's total wind capacity to 7,647 megawatts, making wind the largest source of generating capacity in the state at 45%, ahead of solar and natural gas at 19% each.

For homeowners, this project itself doesn't require any action, but it reflects a broader shift toward more wind power on the grid, particularly in the Southwest. On May 15, 2026, the California grid operator recorded 7,122 megawatts of wind generation in a single hour, 20% above the previous record set in 2024. More wind capacity feeding into regional grids can affect electricity supply and pricing over time in states connected to that grid, including Arizona and California, though the direct effect on any individual home's bill will depend on local utility rates and programs.