U.S. Senate Republicans on Monday proposed a tax bill that would extend a clean fuel tax credit through 2031, but trim 20% of ...

which is for sustainable aviation fuel produced in 2023 and 2024. The Treasury Department is developing a separate formula for the 45Z tax credit, which will cover fuel produced in 2025.

Federal law provides tax credits ... calculation system developed by the Department of Energy that is known as GREET. Environmental groups had battled with airlines and renewable-fuel producers ...

The Biden administration said Friday it would allow ethanol-based fuels to be included in its sustainable aviation fuel tax credit qualifications ... or GREET, formula, or a European model ...