An increase in US renewable fuel credit generation in June is unlikely to eliminate an expected supply shortfall in 2026, a dynamic that should continue to support renewable fuel producers and feedstock suppliers, TPH Energy Research analyst Matthew Blair said in a Monday note.
The outlook comes despite US renewable fuel credit generation rising in June as domestic production of renewable diesel, biodiesel and sustainable aviation fuel increased, according to US Environmental Protection Agency data released late last week.
Total gross RIN generation increased to the equivalent of 2.27 billion credits in June, up from 2.14 billion in May and 2.01 billion a year earlier. The gain was driven primarily by D4 biomass-based diesel RINs, which rose to 839 million from 736 million in May and 630 million a year earlier, marking the third-highest monthly D4 total on record.
D1 through D7 are classifications of RINs tied to different renewable fuels and compliance categories under the US Renewable Fuel Standard.
The increase reflected stronger domestic output, with US utilization rates for RD, BD and SAF production climbing to 86% in June from 76% in May. Imports of renewable diesel and biodiesel edged higher but remained modest at 19 million gallons, accounting for about 4% of D4 RIN generation.
While annualizing June's net RIN production would yield about 25.9 billion credits, exceeding the 2026 Renewable Volume Obligation of 25.5 billion, Blair cautioned that June reflects seasonally strong D6 ethanol RIN generation. Using more typical D6 production levels produces an annualized total of roughly 25.1 billion RINs, below the federal mandate.
Assuming D4 and D3 cellulosic biofuel generation remains at June's pace through year-end would result in only about 24.3 billion RINs, also well below the 2026 requirement. Under that scenario, the US would need substantially higher imports of RD, BD and SAF than seen in June to meet the RVO, likely requiring higher D4 RIN prices to attract additional supply.
A tighter RIN market could continue to benefit renewable diesel producers and refiners with renewable fuel operations, while supporting demand for agricultural feedstocks used in renewable fuel production, Blair said.