- Dec 17, 2020 3:46 pm GMT
Batteries can help make the grid cleaner in at least two ways: By storing power produced by renewable generation at times when there's more of it than is needed, such as most afternoons for solar generation in California and most nights for wind generation in Texas; and by storing energy from the grid and discharging it at times of peak demand, such as late afternoons and early evenings during heat waves.
In the first case, batteries are compensating for the intermittency of renewable generation, enabling more of it to be added to the grid; in the second, they're taking the place of peaker generation units, which typically are expensive to operate and produce a lot of pollution for their size.
The batteries that will be used in the Astoria, Queens project announced yesterday by Con Edison will begin their service lives serving the second function but if offshore wind generation is added as anticipated in New York, eventually will serve the first one, too.
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