
Big Canyon Dams Denied in Grand Canyon (AZ)
On April 25, 2024, the Federal Energy Regulatory Commission (FERC) denied the preliminary permit application for a large pumped storage hydropower project on Big Canyon after the same developer tried and failed to build a large pumped hydro project directly on the Little Colorado River. Big Canyon is a tributary of the Little Colorado River just miles from the heart of the Grand Canyon; the project would have relied on dwindling groundwater supplies to fill a large reservoir. The Little























