For the first time, Maine is reporting climate pollution without federal data

MAINE PUBLIC • June 22, 2026

For decades, Maine and other parties have relied on the federal government to publish comprehensive data on greenhouse gas pollution, the foundation for national and local climate policy. The EPA stopped publishing data last year, when Trump pulled the U.S. out of international climate agreements. It was the first time in 30 years the agency failed to report information on greenhouse gasses. Now Maine is working with partners to compile and publish the data themselves. Maine's biannual "greenhouse gas inventory" estimates the amount of climate pollution such as carbon dioxide and methane released from vehicles, homes and businesses, industry and electricity production. Maine also calculates how those emissions are offset by carbon stored in the state's forests, peat bogs and other natural sinks.