An Act relative to a just transition to clean energy

This bill establishes a clean fuel standard requiring transportation fuel providers to reduce the carbon intensity of their fuels by 80% from 1990 levels by 2050. It creates a credit-trading system where providers using low-carbon fuels (like electricity or sustainable aviation fuel) earn credits, while those exceeding the annual carbon intensity standard must purchase credits or face deficits. The Department of Energy Resources will set yearly standards based on full lifecycle emissions, with exceptions for aviation, rail, military, and small-volume fuel providers (though aviation can opt in). Crucially, public entities like utilities generating credits must invest a portion of their credit value into clean energy and accessible transportation projects in disadvantaged communities.