The only time the dams are efficient at producing energy is during the spring runoff months. We can't simply flip a switch and release water that isn't there.
In 1980 the Northwest Power Planning Council set its mission to protect and restore salmon and steelhead and to ensure that the Northwest had a reliable, affordable energy supply. Twenty years later, we have extinctions and blackouts.
This energy crisis will not spiral out of control or be brought under control by what happens to the Snake River dams.