Solar and wind continue to push coal off the West’s grid

September 8, 2026

In December 2024, the Biden administration proposed creating two new transmission line corridors to accommodate growing power demand, lower costs and connect underserved communities to the regional grid. These were major projects: One would have cleared the way for high-voltage lines to bring greater grid access to several tribal nations in the Dakotas and Nebraska. The other, the Southwest Grid Connector, had national significance: It would have opened the door to linking the Western and Eastern grids and shuttling power between the Midwest and Colorado and New Mexico.