pumped storage is a tried and proven technology, with a high efficiency, and zero emissions.
Both the wind generation and pumped storage are renewable, zero emission generation sources.
Many hydro plants might also be pumped storage facilities at better efficiency than can be expected from compressed air storage.
pumped storage would work for them, as would reverse osmosis water production.
There are three types of hydropower facilities: impoundment, diversion, and pumped storage.
Prevent over pumping of upper reservoir at pumped storage projects.
British Dictionary definitions for pumped storage
(in hydroelectric systems) a method of using power at a period of low demand to pump water back up to a high storage reservoir so that it can be released to generate electricity at a period of peak demand