Section 45Z of the Inflation Reduction Act offers biofuel producers tax credits based on the carbon intensity of their fuel. Farmers who adopt practices like cover crops, reduced tillage, and efficient fertilizer use can lower their carbon score and earn premiums from ethanol plants. These same practices cut nutrient runoff and improve water quality, creating a direct link between low-carbon fuel incentives and cleaner waterways. Early premiums have reached over 50 cents per bushel for the lowest carbon scores, according to farmers and industry groups. The program has no contract requirement and does not exclude farmers who already use conservation practices, which could accelerate adoption at a larger scale than previous voluntary programs. The article highlights a promising intersection of climate finance and agricultural conservation. For anyone tracking biofuel policy, carbon markets, or water quality, this is a concrete example of how subsidy design can deliver multiple environmental benefits.
