5% decline between 2023 and 2024
In New York City, the major sources of greenhouse gases are residential and commercial buildings, manufacturing, cars and trucks, landfills and wastewater treatment. But significant drops in those emissions came as a result of increased energy efficiency and the phase-out of fuel oil in buildings, as well as the rise of hybrid and electric cars as well as fuel-efficient gas vehicles
https://www.thecity.nyc/2025/12/23/greenhouse-gas-inventory-emissions-pandemic/
