As of June 15, 2026, the U.S. Department of Energy (DOE) issued a request for information signaling it is considering revisions to the Biden administration’s 2024 energy efficiency standards for distribution transformers, reopening debate over rules that utilities and manufacturers had largely accepted after earlier revisions. [1] The review seeks feedback on whether the standards could increase transformer costs, affect manufacturing capacity, alter contract terms for utilities, or exacerbate ongoing supply shortages as electricity demand rises from data centers, electrification, and grid expansion. [2] Utility groups have expressed concern that reopening the rule could create regulatory uncertainty just as manufacturers are investing to comply with the existing standards and expand domestic production, potentially delaying procurement of critical grid equipment needed to connect new generation and large electricity loads. The DOE’s review is part of the Trump administration’s broader effort to reassess Biden-era energy efficiency regulations while balancing grid reliability, supply chain resilience, and the growing need for distribution infrastructure to support increasing electricity demand.
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