Cloud seeding has been around for decades. It started out as a way to make rain for growing crops. But these days in the Mountain West, it’s used as a way to make more snow.
Idaho Power is seeding clouds as part of its strategy to make sure there’s enough runoff from melting snow in the summertime. That translates into water in rivers — and more water means more power generated from those rivers’ hydroelectric dams.
Winter Cloud Seeding Diagram