On May 1, 2024, DOE issued regulations that require certain new federal buildings and federal buildings undergoing major renovations to be designed to reduce their fossil fuel-generated energy consumption. On January 17, 2025, DOE provided additional examples to demonstrate key points of compliance or non-compliance in Clean Energy Rule Implementation Guidance. On May 5, 2025, DOE announced it would review this recent implementation guidance, and that in the interim it has stayed the compliance date of the recent final rule that requires these buildings to meet energy performance standards. Specifically DOE has stayed the May 1, 2025, compliance date in subpart B of 10 CFR part 433 and subpart B of 10 CFR part 435 until May 1, 2026.