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Energy Codes

The most cost effective way to improve the efficiency of homes is when they are being built.   One way to ensure that savings are effective is to adopt an energy code that works with building codes designed to promote health and safety.    Since Colorado is a home rule state with local control over building codes, the Colorado Energy Office does not set a State energy code.  However, as energy codes are one of the most effective ways to increase energy efficiency, the Colorado Energy Office supports provides support for jurisdictions to adopt energy codes.  Additionally, as part of the stimulus funding from 2009, the CEO agreed to promote both the adoption and compliance of the 2009 International Energy Conservation Code® (IECC®).  New homes built under the 2009 code are 15% more efficient than homes built to the 2006 code.    Some communities have even adopted the 2012 code, which is an additional 15% more efficient than 2009 code-built homes, and 30% more efficient than homes built even a few years ago!  Those savings put money in the Colorado consumers’ pocket each year.


From 2010-2012 the Colorado Energy Office and the Colorado Department of Local Affairs (DOLA), developed a program to help jurisdictions adopt the 2009 IECC.   As a result almost 85%of the homes in Colorado are covered by the 2009 IECC or better.   For jurisdictions that haven’t adopted 2009 or 2012 IECC, the CEO in cooperation with DOLA has developed an online toolkit to provide Colorado’s counties and municipalities with the tools and information needed to implement and benefit from the 2009 IECC. 


As of July 2014, with 90% of the residential building covered by 2009 IECC, the Colorado Energy Office has shifted its focus from adoption to compliance, to ensure that local builders understand and build to the code requirements. To help improve compliance around the state, the Colorado Energy Office is a leading member of the Energy Code Compliance Collaborative.  The Collaborative consists of code officials, builders, designers, and other interested stakeholders that are working together to develop, manage, and promote the energy code compliance system for Colorado.  The expected results of the Collaborative include a fully functioning reporting system that supports the local jurisdiction enforcement efforts and provides useful data for program review.  With more information, code officials can help make sure your new house is as energy efficient as the code requires. 


In 2014 and 2015 the Colorado Energy Office will continue to offer code training for any jurisdiction in Colorado.  The training not only helps code officials understand changes to the IECC, but also provides an open dialogue to help the CEO develop better programs and training opportunities 


Read a Copy of Colorado’s Code’s Compliance Plan


For additional information on the collaborative or to find out how to participate please contact: 

CEO's Residential Program Associate.