What regulatory milestone did Brazil's corn ethanol achieve with the International Maritime Organization (IMO), and why is it significant?

Brazil's second-crop corn ethanol became the first biofuel compatible with marine transport to have its carbon footprint formally defined and approved by the IMO, with a default value of 20.8 grams of CO₂ equivalent per megajoule — significantly lower than the 93.3 g CO₂e/MJ reference value for conventional bunker fuel. This approval is significant because it clears a key regulatory hurdle ahead of the IMO’s global net-zero framework (formally adopted in December 2026), enabling shipping companies to identify and adopt certified low-carbon alternative fuels, and giving Brazil a competitive edge over other producers like the US.

How does Brazil's second-crop corn ethanol differ from US corn ethanol in terms of carbon intensity, according to the article?

According to the article, Brazil’s corn-based ethanol is claimed by its domestic industry to be intrinsically less carbon intensive than US biofuel due to two key factors: the use of biomass in production and Brazil’s double-cropping system — where second-crop corn is planted after soybeans in the same fields — which contributes to lower overall emissions. This distinction underpins Brazil’s successful IMO approval of a low default carbon intensity value (20.8 g CO₂e/MJ) for its second-crop corn ethanol.

Brazil Corn Ethanol Clears IMO Regulatory Step for Maritime Use

May 4, 2026

Brazil's second-crop corn ethanol received IMO approval for maritime transport, establishing a carbon footprint value significantly lower than bunker fuel. This regulatory milestone boosts Brazilian biofuel exports and supports the shipping industry's transition away from oil.

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Brazil Corn Ethanol Clears IMO Regulatory Step for Maritime Use

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