Regs.gov: Energy Efficiency and Renewable Energy Office

DOE Final Determination on Metal Halide Lamp Fixture Energy Standards

The U.S. Department of Energy has issued a final determination that more stringent energy conservation standards for metal halide lamp fixtures (MHLFs) are not cost-effective. Therefore, DOE will not amend the existing energy conservation standards for MHLFs. This determination is effective March 16, 2026.

Energy Conservation Standards for Small Electric Motors Final Determination

The U.S. Department of Energy has issued a final determination that more stringent energy conservation standards for small electric motors would not be cost-effective. Therefore, the DOE has decided not to amend the existing energy conservation standards for these motors.

Petroleum-Equivalent Fuel Economy Factor Rule

The Department of Energy (DOE) has issued an interim final rule removing the fuel content factor (FCF) from the petroleum-equivalency factor (PEF) calculation for electric vehicles. This change aligns with a court decision and impacts how light-duty vehicle manufacturers comply with CAFE standards. Comments are due March 23, 2026.

DOE Proposed Information Collection for Section 45Z Emissions Value Requests

The U.S. Department of Energy is seeking public comment on a new information collection request for Section 45Z Emissions Value Requests. This collection is necessary for fuel producers to petition for a Provisional Emissions Rate to claim a section 45Z tax credit. Comments are due by April 2, 2026.