Mamdani backs clean energy build-outs, decarbonization efforts

By Marie J. French | 06/27/2025 07:01 AM EDT

NYC’s presumptive Democratic mayoral nominee is poised to take on big energy transition challenges in the nation’s largest metropolis.

Democratic mayoral candidate Zohran Mamdani speaks on stage with fellow candidate Comptroller Brad Lander at his primary election party.

Democratic mayoral candidate Zohran Mamdani (left) speaks on stage with fellow candidate Comptroller Brad Lander at his primary election party Wednesday in New York. Heather Khalifa/AP

An evangelist for a massive publicly owned renewable energy build-out is poised to lead the nation’s largest city — one that’s heavily reliant on fossil fuels.

Zohran Mamdani, the 33-year-old socialist who’s on track to win New York City’s Democratic mayoral primary, focused much of his campaign on affordability issues like providing free buses, freezing rents and creating city-run grocery stores. But he has a history of advocacy on climate issues as well.

“I’m running for mayor to make the city more affordable and to take on the existential crisis of our time — climate change,” Mamdani said during a March candidate forum on climate.

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His prime rival in the primary, former Gov. Andrew Cuomo, conceded defeat Tuesday night, but results of the ranked-choice election aren’t expected to be finalized until July 1.

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