word

Battery Energy Storage System (BESS)

BAT-er-ee EN-er-jee STOR-ij SIS-tem

/ˈbætəriː ˈɛnərdʒiː ˈstɔːrɪdʒ ˈsɪstəm/

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Syllable breakdown

BatteryEnergyStorageSystem

Dictionary meaning

A large-scale electrochemical system that stores electrical energy in batteries and releases it on demand. BESS units are deployed alongside solar and wind farms to smooth output variability, provide grid ancillary services, and enable peak shaving or time-shifting of renewable generation.

Examples

The 200 MW battery energy storage system was paired with the solar farm to supply power after sunset.
BESS technology is critical for achieving high penetration of variable renewables on the grid.

Synonyms: grid-scale battery, utility battery storage, BESS

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