Heat-Driven Outages Prompt Voltage Reduction and Conservation Requests in New York City

Extreme heat on Thursday caused scattered outages across New York City and Westchester, leaving thousands of customers without power. Con Edison reduced voltage by 8% in the affected zones to protect equipment while crews repaired lines. As of 10:30 p.m., customers in the Bronx, Yonkers, Pelham, Mount Vernon, Bronxville, Eastchester, New Rochelle, Mamaroneck, and City Island remained without service. The utility asked residents to limit washers, dryers, microwaves, and to operate only one air-conditioner set between 75 °F and 78 °F.

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The heat wave increased demand for air-conditioning and other high-load appliances, creating unexpected load challenges for the New York Independent System Operator (NYISO). State officials said the surge tested the grid’s capacity, prompting pre-emptive measures to avoid broader failures.

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Governor Kathy Hochul said her administration is monitoring the grid and coordinating with Con Edison, NYISO, and city officials to ensure large consumers can shift to alternative fuels. She urged New Yorkers to conserve electricity where safe, noting that modest temperature adjustments and reduced appliance use can ease strain. Con Edison’s notices emphasized the 8% voltage reduction, ongoing repairs, and the request for customers to avoid non-essential electricity use.

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Residents in the listed neighborhoods experienced intermittent power loss, prompting crews to prioritize high-density areas. The utility’s outage map showed continued outages into the night, and local advisories reminded customers to conserve energy until service was fully restored.

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Sources do not provide precise outage counts or a timeline for complete restoration, leaving the full scale of the disruption unclear. Independent verification of the 8% voltage reduction is not included beyond Con Edison’s statement.

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State officials will keep monitoring grid performance as temperatures stay high. Con Edison will continue repairs and restore full voltage once equipment stability is confirmed. The governor’s office emphasized the need for ongoing electricity conservation if demand continues to challenge the grid.

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• “My team has been coordinating with Con-Ed, NYISO and New York City leaders to ensure all large consumers are able to switch to other fuel sources have done so to reduce their usage,” — Kathy Hochul, Governor of New York

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• “Due to the increase in energy demand and unexpected load challenges, I am also calling on New Yorkers to do their part to proactively conserve electricity if safe to do so by setting air conditioning units between 75-78 degrees and avoiding unnecessary appliance use. These small steps can go a long way.” — Kathy Hochul, Governor of New York

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