September 9, 2021: The growth in battery storage in the US could increase by 10 times 2019 capacity by 2023, the US Energy Information Administration said in a report released on August 16.
“Electric power markets in the United States are undergoing significant structural change that we believe, based on planning data we collect, will result in the installation of the ability of large-scale battery storage to contribute 10,000MW to the grid between 2021 and 2023 — 10 times the capacity in 2019,” the report says.
At the end of 2019, the EIA counted 163 large-scale battery storage systems operating in the US. While this is not a large number, it was still a 28% increase over 2018.
In total, the sites stored a maximum capacity of 1,688 MWh, with a power capacity of 1,022MW.
By 2023, the capacity of battery storage — whether it’s standalone or solar, wind or fossil-fuel paired — is predicted to total 10,000MWh.
The report also says that before the end of 2019, more than 60% of battery storage had been installed under the two regional grid operators PJM Interconnection and California Independent System Operator (CAISO).
Of the additional storage to be put in place by 2023, a third will be in states outside those operators, the report says.
Another growing trend is the installation of batteries as support for solar power.
Whereas in December 2020 most US large-scale systems were stand-alone, with just 30% co-located with generation from renewable resources, by 2023 the proportion is expected to double to 60%, the EIA says.