Generation of renewable identification number (RIN) credits in April rose by 12pc, as biomass-based D4 diesel credits posted their second highest monthly volumes ever.
Total RIN generation rose to 2.06bn credits in April, up from 1.84bn a year earlier, the US Environmental Protection Agency reported on Thursday.
D4 credits continued to lead gains in April, with generation increasing on the year by 29pc to 780mn credits. The only month with greater D4 RIN generation was December 2023. D4 accounted for 38pc of all RINs in April, up from 33pc in April 2023.
Ethanol D6 RIN generation rose from a year earlier by 2.4pc to 1.2bn credits, accounting for 58pc of all RINs generated in the month. D6 credits were also up by 4pc from March, a month that was affected by seasonal ethanol plant maintenance.
Cellulosic biofuel D3 credit generation rose by 7.6pc from a year earlier to 69mn credits.
RINs are credits traded and produced by refiners and importers to show compliance with the EPA's Renewable Fuel Standard program. Obligated parties can produce credits when renewable fuels are blended into conventional transportation fuels or can purchase credits from other RIN producers.
