The Colorado legislature passed a law in 1978 requiring all jurisdictions that have adopted building codes to include energy efficiency requirements for both residential and commercial buildings. The energy requirement at that time was based on Chapter 53 of the 1979 Uniform Building Code (UBC) -- a codified version of ASHRAE Standard 90-1975. A sunset provision was included for commercial buildings requiring the legislature to specifically extend the provisions for those buildings. The legislature failed to act and the commercial requirements were terminated in 1980, except for jurisdictions that had adopted this code prior to the termination.
On May 3, 2007, the state legislature passed HB 07-1146, improving the energy performance of the state's new buildings as part of a comprehensive energy strategy that begins with energy efficiency and incorporates renewable energy technologies. HB 07-1146 calls for all Colorado jurisdictions that have adopted any building code (and those that do so in the future) adopt a minimum energy code standard at least as stringent as the 2003 IECC effective July 1, 2008. Jurisdictions without building codes will be exempt. As part of its Compliance Planning Assistance (CPA) Program, BCAP research indicates that roughly 97 percent of Colorado's citizens live in jurisdictions that have adopted some version of the IECC, although few jurisdictions have updated their codes to the 2009 edition.
The Colorado Governor's Energy Office has posted its plans for spending ARRA SEP funds.
Enforcement: Energy codes are not enforced at the state level, except for public buildings, manufactured and modular housing, and hotels and high-rise residential buildings in jurisdictions without an energy code. Local enforcement agencies in jurisdictions that have adopted building codes are required to enforce the provisions of the residential energy code at the local level, but may adopt their own requirements without state approval. Inspections are required as a part of the established building inspection process.
As directed by HB 07-1146, the Governor's Energy Office (GEO) works in close partnership with building departments to provide energy code training, information and other resources to support local adoption and implementation of the 2006 IECC. GEO is currently working with local energy efficiency firms in the state to put together a comprehensive energy code adoption and implementation program for 2010-2011. Please check GEO's website for more information.