An Act relative to a just transition to clean energy

HD 2556 establishes a clean fuel standard requiring transportation fuel providers to reduce the carbon intensity of fuels by 80% below 1990 levels by 2050. It creates a credit-trading system where providers using cleaner fuels earn credits to offset deficits from higher-emission fuels, with specific exclusions for aviation, rail, military, and small-volume providers (though aviation may opt in). Public entities like utilities must invest a portion of credit value into clean energy and accessible transportation projects in disadvantaged communities. The standard uses full lifecycle emissions data (including land use changes) measured annually via the GREET model to calculate compliance.