Energy Codes

2 men doing energy efficiency test on the front door of a home

The most cost-effective way to improve the energy efficiency of buildings is when they are being built. One way to ensure savings are effective is to adopt an energy code that works with building codes designed to promote health and safety. The Colorado Energy Office (CEO) has no rule-making authority to make jurisdictions adopt any code. However, through training for city staffers and private sector workers such as architects, builders and contractors, CEO provides market information to help jurisdictions adopt, implement and comply with new codes.

Colorado’s training efforts have placed the state in the position where over 90 percent of construction activity in Colorado occurs in communities that have adopted the 2009 International Energy Conservation Code (IECC) or newer. Nearly 50 percent of all construction activity in Colorado occurs in communities adopting the 2012 and 2015 IECC. Communities that recently have adopted the 2015 IECC, or are in the process with an expected adoption, will cover approximately 27 percent of the construction activity in the state.

For more information, see a list of Energy Codes in Colorado Jurisdictions.

CEO is a 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 and implement Colorado's Energy Code Strategic Compliance Plan.

CEO sponsors Wednesday Webinar Energy Code Trainings - check back from information about upcoming schedule.

For questions, or to request a training, contact Kim Burke at