I live in Oregon; we have a lot of dams on the Columbia that can be used for intermittent power. I don't know if they have a capability to pump water upstream

I live in Oregon; we have a lot of dams on the Columbia that can be used for intermittent power. I don't know if they have a capability to pump water upstream at Bonneville or any of the others when they have surplus power, but that seems like it'd be a useful thing to add if its feasible.