[tpmintx]

Solution — Use the surplus wind power to run the dams’ turbines backwards to pump the water back upstream to store it behind the dams.

You think you're joking. This is done in California now and has been for years.

San Luis Reservoir

They pump water uphill all winter, and use the water to produce power all summer. It would be interesting to see this done on the Columbia.

[ully2]

They been pumping into resevoir at Coulee
dam for 70 years.