Why It Matters
The Department of Energy (DOE) faces mounting pressure to reshape how it sets appliance and equipment efficiency standards under the Energy Policy and Conservation Act (EPCA), with implications for household budgets, business costs, and state regulatory authority. A Congressional Research Service report released August 26 lays out competing visions for reforming the decades-old statute that governs more than 60 product categories, from refrigerators to commercial boilers.
The Trump administration has signaled its intent to weaken existing standards and make future rulemakings harder to complete. In May 2025, the Department of Energy announced it would propose eliminating or reducing 47 regulations, with 24 of those targeting EPCA-authorized efficiency standards. Congress has already acted, using the Congressional Review Act to revoke three revised standards that would have tightened requirements for water heaters, walk-in coolers, and commercial refrigeration equipment. Meanwhile, the administration is exploring legal arguments to justify rollbacks without violating EPCA's anti-backsliding provision, which currently prohibits weakening any standard once set.
At stake is whether federal efficiency standards will continue tightening over time or become easier to relax, and whether states like California can maintain their own stricter rules. A study from the Appliance Standards Awareness Project estimated that updating standards under the existing framework would yield $160 in annual savings per household and $15 billion in cumulative annual savings to businesses, with benefits projected between 2030 and 2050.
The Big Picture
In 1978, Congress mandated a national standards program, tasking the Secretary of Energy with setting binding targets for the energy performance of certain consumer products. The law mandates periodic reviews every six years and prohibits standards from reducing stringency once established. But the statute does not define "significant conservation of energy" in quantitative terms, creating an opening for policy battles over how much savings a new standard must achieve.
A 2021 report to Congress identified 33 rulemakings as late relative to statutory deadlines, with 25 having missed the six-year periodic review requirement — roughly half the entire standards inventory. That backlog has triggered federal litigation and court orders compelling action.
On July 7, DOE's revised Process Rule proposed a two-part test requiring either a 10% reduction in energy use over 30 years or a minimum of two quadrillion BTUs of savings using full fuel cycle accounting. This approach mirrors a 2020 proposal from the first Trump administration that was reversed by the Biden administration in 2021.
Department of Energy officials are arguing that the prohibition only requires maintaining efficiency levels prescribed by statute itself, not by regulatory interpretation, and that the anti-backsliding provision does not apply if a product is not statutorily designated as "covered."
The Bottom Line
H.R. 4626, passed by the House in the 119th Congress, would establish a quantitative energy savings threshold, grant the Department of Energy explicit revocation authority for standards, eliminate the mandatory six-year review cycle, and mandate a two-year ex post review instead. Similar bills passed the House in the two prior Congresses.
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