The FDNY will testify before the New York City Council on Tuesday afternoon about fire safety, including how the department regulates the storage of lithium-ion batteries, which have been linked to deadly fires.

The oversight hearing follows growing public concern about battery energy storage systems, or BESS — often referred to as battery farms — which store electricity for use during peak demand or when the grid is under strain.

While the technology is seen as key to clean-energy goals, Queens and Staten Island residents have begun protesting the construction of BESS sites in their neighborhoods, citing safety risks.

The uproar intensified after a massive fire at a battery site in Northern California earlier this year forced more than 1,000 people to evacuate.

Councilmember J

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