‘Water Batteries’ Could Store Solar and Wind Power for When it’s Needed

Takeaways:

• The San Diego County Water Authority has developed a plan to store solar power, so it is available after sunset.
• They plan to connect underground pipes under the San Vicente Reservoir to small pipes built in a nearby canyon about 1100 feet in elevation.
• When the sun goes down, a valve would open and force 8 million tons of water down the pipes, which would drive turbines capable of generating 500 megawatts of electricity.

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