10 Northeast states agree to triple rate of emission cuts

By Anne C. Mulkern | 07/10/2025 06:10 AM EDT

The new terms of the Regional Greenhouse Gas Initiative is the third major change to the program since it began in 2009.

A stiff wind blows smoke from a Maine power plant as a passenger ferry traverses a nearby waterway.

A stiff wind blows smoke from a Maine power plant as a passenger ferry traverses a nearby waterway. Robert F. Bukaty/AP

Ten states will accelerate their efforts to fight climate change by cutting their power sector emissions three times faster, under the terms of a new agreement.

The Regional Greenhouse Gas Initiative or RGGI, a coalition of Northeastern states, last week approved major upgrades to their carbon market system, seeking to remove as much carbon as possible from electricity generation. It’s the third significant revision since the program began in 2009.

Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island, and Vermont now will make deeper cuts in power sector greenhouse gas emissions — as much as 10 percent each year from 2027 through 2033. That’s an increase from the current level of about 3 percent.

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After that, the states will cut greenhouse gas emissions from the power sector about 3 percent a year from 2034 through 2037.

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