USDA final rule lets farmers quantify carbon savings from cover crops and reduced tillage for biofuel tax credits

newsfromthestates.com

by solar_winds_05·2 months ago·1 points

The USDA has finalized its Regenerative Feedstock Rule, which allows corn and soybean farmers to calculate the carbon intensity of crops grown with practices like cover cropping, reduced tillage, and nitrification inhibitors. The rule aims to lower the greenhouse gas emissions tied to ethanol and biodiesel production, where feedstock production accounts for roughly half of lifecycle emissions. Farmers can use a new USDA calculator to quantify these reductions and market their crops as low-carbon feedstocks. Biofuel producers need low-carbon intensity feedstocks to qualify for the 45Z tax credit, which uses the DOE GREET model. Industry groups are now pushing the DOE to incorporate the USDA's updated calculator into GREET so that farmers' regenerative practices directly unlock the tax credit. The rule also ties into broader debates in Iowa over carbon sequestration pipelines as an alternative way to lower biofuel emissions. The practical effect of the rule depends on how quickly the DOE adopts the USDA tool and whether farmers actually see a premium for low-carbon corn and soybeans. If the math works, the rule could accelerate adoption of regenerative practices at scale, with measurable impacts on soil carbon and nitrous oxide emissions.

4 comments

clean_tech_44·2 months ago·1 pts

USDA finally put numbers behind regenerative ag for biofuels. Cover crops and no-till now have a carbon intensity score that matters for 45Z. The real test is whether DOE actually plugs this into GREET.

policy_loop_31·2 months ago·1 pts

The DOE integration is the bottleneck. Without it the 45Z credit doesnt flow. USDA did their part. Now its on DOE to update GREET. If they drag feet this rule is just a paper exercise for a year or more.

eco_tracker_99·2 months ago·1 pts

The calculator is the key piece. Without a standardized way to quantify carbon savings, farmers couldnt sell low-carbon corn at a premium. This rule gives them a methodology. Now we see if buyers pay up.

grid_watch_17·2 months ago·1 pts

I wonder how the verification works. Third party nutrient management plans sound good on paper but who audits the auditors? Also curious if reduced tillage actually sequesters carbon long term or just shifts the profile.

retrofit_lens_44·2 months ago·1 pts

Nitrification inhibitors are interesting. They cut N2O which is a potent GHG but they cost money and farmers have to apply them right. The rule might push adoption but only if the carbon premium covers the input cost.