{"source":"reg-energy-efficiency","note":"Free 5-item preview. The full feed is $0.05/call at GET /v1/reg-energy-efficiency/changes.","question":"Which final or proposed federal rules affecting appliance & equipment energy standards were published since T, and which carry compliance obligations?","sample":[{"source":"reg-energy-efficiency","entityId":"fedreg:2026-14112","type":"proposed_rule","title":"Amendments and Nonconformance Penalties for Model Year 2027 and Later Heavy-Duty Highway Engines and Amendments to Inducement Provisions for SCR-Equipped Diesel Engines","summary":"The U.S. Environmental Protection Agency (EPA) is proposing regulatory amendments to certain compliance provisions and test procedures related to model year (MY) 2027 and later heavy-duty highway engines. These amendments would include changes to the regulatory useful life periods and the emission-related warranty periods. The EPA also proposes to add clarity to certain regulatory compliance provisions and correct errors in the regulations to support the MYs 2027 and later program for heavy-duty highway engines and vehicles. This includes certain amendments related to provisions adopted in Ja…","significance":6,"detectedAt":"2026-07-14T22:19:14.990Z","effectiveDate":null,"sourceUrl":"https://www.federalregister.gov/documents/2026/07/14/2026-14112/amendments-and-nonconformance-penalties-for-model-year-2027-and-later-heavy-duty-highway-engines-and","detail":{"documentNumber":"2026-14112","documentType":"Proposed Rule","agencies":"Environmental Protection Agency","publicationDate":"2026-07-14","vertical":"reg-energy-efficiency"}},{"source":"reg-energy-efficiency","entityId":"fedreg:2026-11971","type":"proposed_rule","title":"Energy Conservation Program: Energy Conservation Standards for Distribution Transformers","summary":"A Presidential determination issued on April 20, 2026, found that grid infrastructure supply chains, including distribution transformers and electrical core steel, are essential to national defense, and that U.S. industry faces critical constraints from limited domestic product capacity, extended procurement timelines, and foreign supply dependence. The U.S. Department of Energy (\"DOE\") is initiating an information and data gathering effort to understand how the energy conservation standards for distribution transformers adopted in an April 2024 final rule, with compliance required in 2029, i…","significance":6,"detectedAt":"2026-07-14T22:19:14.990Z","effectiveDate":null,"sourceUrl":"https://www.federalregister.gov/documents/2026/06/15/2026-11971/energy-conservation-program-energy-conservation-standards-for-distribution-transformers","detail":{"documentNumber":"2026-11971","documentType":"Proposed Rule","agencies":"Energy Department","publicationDate":"2026-06-15","vertical":"reg-energy-efficiency"}},{"source":"reg-energy-efficiency","entityId":"fedreg:2026-13673","type":"proposed_rule","title":"Energy Conservation Program: Review of DOE's Analytic Methods for Setting Energy Conservation Standards","summary":"The U.S. Department of Energy (\"DOE\" or the \"Department\") requests comment regarding the assumptions, models, and methodologies that DOE uses in setting energy conservation standards for covered products and equipment. Relatedly, DOE also requests comments on the report summarizing the work conducted by the National Academies of Sciences, Engineering, and Medicine (\"NASEM\") Committee on Review of Methods for Setting Building and Equipment Performance Standards. DOE also welcomes the submission of data, peer-reviewed studies, and other relevant information related to how DOE might implement NA…","significance":4,"detectedAt":"2026-07-14T22:19:14.990Z","effectiveDate":null,"sourceUrl":"https://www.federalregister.gov/documents/2026/07/07/2026-13673/energy-conservation-program-review-of-does-analytic-methods-for-setting-energy-conservation","detail":{"documentNumber":"2026-13673","documentType":"Proposed Rule","agencies":"Energy Department","publicationDate":"2026-07-07","vertical":"reg-energy-efficiency"}},{"source":"reg-energy-efficiency","entityId":"fedreg:2026-13674","type":"proposed_rule","title":"Energy Conservation Program: Procedures, Interpretations, and Policies for Consideration of New or Revised Energy Conservation Standards and Test Procedures for Consumer Products and Certain Commerci…","summary":"The U.S. Department of Energy (\"DOE\" or \"the Department\") proposes to update the Department's current rulemaking methodology titled, \"Procedures, Interpretations, and Policies for Consideration of New or Revised Energy Conservation Standards and Test Procedures for Consumer Products and Certain Commercial/Industrial Equipment\" (\"Process Rule\"). Specifically, DOE proposes to: make Appendix A binding on DOE for certain actions; amend objectives and considerations consistent with recent Executive orders and Department policies; add a definition of \"significant energy savings\"; re-instate the com…","significance":7,"detectedAt":"2026-07-14T22:19:14.990Z","effectiveDate":null,"sourceUrl":"https://www.federalregister.gov/documents/2026/07/07/2026-13674/energy-conservation-program-procedures-interpretations-and-policies-for-consideration-of-new-or","detail":{"documentNumber":"2026-13674","documentType":"Proposed Rule","agencies":"Energy Department","publicationDate":"2026-07-07","vertical":"reg-energy-efficiency"}}]}