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Title III of the Energy Conservation and Production Act (ECPA), as amended, established requirements for building energy conservation standards administered by the U.S. Department of Energy (DOE) Building Energy Codes Program (42 U.S.C. 6831 et seq.).  Section 304(a) of ECPA, as amended, provides that when the 1992 Model Energy Code (MEC), or any successor to that code (i.e. the IECC), is revised, the Secretary must determine, not later than 12 months after the revision, whether the revised code would improve energy efficiency in residential buildings and must publish notice of the determination in the Federal Register (42 U.S.C. 6833(a)(5)(A)).