Renewable energy sources, such as solar and wind, are projected to generate 44% of all power in the U.S. by 2050, which is increasing the need for battery energy storage systems (BESS).1

BESS are electrochemical devices that collect energy from a power grid, power plant or renewable source, hold it, and then discharge that energy later to provide electricity on demand.

“A BESS does not itself create or produce energy, it is a storage system. The energy is produced by other means, including different types of renewable sources. Think of a cellphone – you charge it overnight and then it runs throughout the day off that battery power,” says Stacie Prescott, head of energy for middle and large commercial at The Hartford.