Hydroelectric energy storage. Uses “green” or off-peak energy to pump water into a tank or reservoir. When needed, the water is released through hydroelectric turbines to generate electricity. Benefit: water very rarely explodes or catches fire.
CC
Hydro storage: Yes, of course. I have no idea the volume of water needed to supply a meaningful amount of hydro-generated electricity but it must be tremendous.
The detractors point out the acreage needed or the size of huge tanks. If dual-using the water for recreation, I would think the water would be drawn off just when people might want to be boating or some such. I suppose if the lake were huge enough, the siphoning would not be a drawback.
We had a nuclear power plant here in Michigan that in off peak hours would pump water out of Lake Michigan up to a nearby holding reservoir - usually at night. Then, during peak usage hours they would release that water back through hydro generators.
I seem to recall that nuclear plants take about 24 hours to ramp and down.
So the water storage idea worked great.
Then the State - at the urging of the greenie weenies - sued the power company because there were too many fish being killed at the intake screens on Lake Michigan.
Forced the power company to give up lots of land along rivers above dams they had built long ago as part of the settlement.