From the San Francisco Chronicle:
“This month, California energy regulators proposed requiring the state’s utility companies to buy more than 1.3 gigawatts of electricity storage by 2020 – enough electricity to supply 993,750 typical homes at any given instant.
“The storage would help ensure that the lights stay on as California adds large amounts of solar and wind power – both highly variable – to its grid. Big energy storage projects would also cut the number of new fossil-fuel power plants built in the state. And they would make the aging grid more reliable.
“The proposal from the California Public Utilities Commission could also transform the storage industry.”