(Reuters) -New York-based utility Con Edison has asked customers to conserve energy during the ongoing heatwave, adding that it has reduced voltage by 8% in parts of eastern Brooklyn to protect equipment and keep power flowing as crews carry out repairs.

All of New York City is being asked to conserve power with Tuesday's extreme heat straining power systems and causing problems around the Tri-State Area. New York City's emergency notification system put out the alert from Con Edison asking New Yorkers to limit their power use.

Thousands of New York City residents are without power for a second day in a row amid extreme heat, according to Con Edison’s outage map. In Queens, more than 2,300 people don’t have power. The neighborhoods that didn’t have electricity include Glen Oaks,