New York’s Biggest Battery to Offer Summer Relief for Power Grid

Consolidated Edison Inc. is putting its largest battery in New York City into service next week to help take stress off the power grid as summer heat drives up electricity demand.

The four-hour battery at Fox Hills substation on Staten Island will be connected on June 28, according to the city’s main utility. The system, which includes 11 Tesla Megapacks, can hold 7.5 megawatts of electricity — enough to charge 1.5 million mobile phones.

The battery will add to electrical supplies when summer demand is typically highest in late afternoons and early evenings, ConEd said in an emailed statement. ConEd ...