The Biden administration is expected to announce a rule this year that would detail annual biofuel blending mandates for the refining industry for a three-year period instead of just for one, three sources familiar with the discussions said.

According to Reuters, the switch to a multi-year target would be aimed at providing longer-term certainty to the refining and biofuels industries, which have battled nearly constantly over the annual mandates since they began more than a decade ago under the U.S. Renewable Fuel Standard.

“They’re trying to put together a proposal for 2023, 2024 and 2025 where once they put the proposals together, then they don’t have to go back in and they don’t have to change and modify the volumes,” said one of the sources, who requested anonymity to speak candidly about the discussions.

The EPA has been ordered to propose a rulemaking for 2023 mandates by Nov. 16, according to a legal document in July.