Feedstocks used for RIN generation

Starch corn has historically been the predominant feedstock for Renewable Identification Numbers (RINs) generation, primarily due to its use in producing ethanol. Its share has remained relatively high, reflecting the established infrastructure and widespread adoption of corn ethanol within the Renewable Fuel Standard (RFS) program. However, its dominance has decreased from more than 90% in 2010 to 61% in 2024 as other feedstocks have gained prominence.

Soybean oil is also major feedstock for biodiesel production. Its use has been relatively consistent, with some fluctuations over the years. The graph indicates a stable yet substantial contribution of soybean oil to RIN generation with a contribution of 10% for the total feedstocks used for RIN generation.