Gas companies increasingly rely on allowed set-asides to achieve compliance with methane emission limits

Set-aside emissions as a percent of actual emissions, per year

Gas companies' methane emissions have shot up through a state set-aside program

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Note: Overall methane emissions from the gas companies have declined between 2021 and 2024, but still remain above the annual cap due to use of the set-aside

Chart: Jordan Wolman/CommonWealth BeaconSource: Massachusetts Department of Environmental ProtectionGet the dataCreated with Datawrapper