U.S. large-scale battery installations breakdown 2022, by chemistry

In 2022, lithium-ion batteries were by far the most used technology among large-scale battery storage installations in the United States. At the time, they represented 99 percent of the roughly nine gigawatts of installed capacity in the country.
Lithium-ion batteries have a high energy density and low self-discharge combined with no memory effect, resulting in them holding full charge for a longer period of time compared to other technologies. Additionally, Li-ion batteries have a high cycle efficiency.