Post #3576678

Soaking up excess power is every bit as important for the stability of a power grid as having enough energy when the demand is high. There are electric grid operators in places with lots of solar and wind installed who are paying people several hundred dollars a year to let them put a battery in their back yard. These homes become small, silent, perfectly clean neighborhood power plants in the evening when the sun is down and people are firing up ovens and doing laundry.