New York City’s sustainability plan reached a new milestone this week as Mayor Bill de Blasio rolled out NYC Clean Fleet, a comprehensive initiative to create the largest electric vehicle fleet of any U.S. city and cut municipal vehicle emissions in half by 2025 and by 80 percent by 2035. Replacing nearly half of the city’s non-emergency vehicle fleet with green cars, and creating a network of charging stations to support them, the ambitious project is expected to cost the city between $50 million and $80 million over 10 years and translate to a greenhouse gas savings equivalent to planting 6,000 trees.

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The NYC Clean Fleet plan involves replacing 2,000 fossil fuel sedans in the city’s municipal vehicle fleet with electric vehicles (EVs) by 2025, which would make it the largest electric fleet of any U.S. city. The New York Times reports that EVs like the Chevrolet Volt and Nissan Leaf will be added to the fleet. From the mayor’s perspective, this ambitious move is a crucial step toward the long-term goal of reducing all greenhouse gas emissions across the city by 80 percent by 2050.

Related: New York adds 70 electric vehicles to its fleet

In addition to greening the city and creating a cleaner environment for local residents, the mayor also hopes New York’s efforts will inspire other municipalities to implement a “clean fleet” strategy of their own. “By building the largest municipal electric vehicle fleet in the country – and potentially the world – New York City is continuing to lead by example,” de Blasio said in a statement. “Cities are setting the pace on climate action – and with our city and our planet’s very future at stake, we need national leaders in Paris to take note and take action.”

+ Office of the Mayor of New York City

+ NYC Clean Fleet

Images via NYC Parks and Chevy