Portland's Shift to 50% Renewable Diesel: What To Know for 2026

Portland’s fuel landscape will be entering a new phase of regulation. Under the City’s updated Renewable Fuel Standard (RFS), the minimum renewable content for diesel sold within city limits is transitioning from 15% to 50% in 2026.

The 50% "Jump" Happens in Stages (May & July 2026)

The move to 50% has not happened yet, but it is the next major milestone on the calendar. The city is using a staggered deadline to prevent supply shocks:

• May 15, 2026 (4 months from now): This is the "Distributor Deadline." Companies that sell fuel to gas stations or bulk plants must switch their inventory to 50% renewable content.

• July 1, 2026 (6 months from now): This is the "Retail/Fleet Deadline." Every diesel pump and private fleet tank in Portland must officially meet the 50% minimum.

This policy, overseen by the Bureau of Planning and Sustainability (BPS), is designed to shift the local market toward low-carbon alternatives like renewable diesel and biodiesel. It is important to note that these requirements apply exclusively to the sale of diesel fuel; the standard does not regulate the use of fuel by vehicle owners, nor does it affect gasoline, which maintains its existing 10% ethanol requirement.

The move to 50% is part of a multi-year strategy adopted by the City Council in December 2022. By phasing in the requirements, the city aims to allow the supply chain and local infrastructure to adjust to the increased demand for biofuels.

Source: https://www.portland.gov/bps/climate-action/renewable-fuel-standard/rfs-code-update/about-rfs