Residential and Commercial > State Code Status: Wyoming

State Code Status: Wyoming

Wyoming does not have a mandatory statewide energy code. For a list of jurisdictional energy code adoptions, please click here.

Current Energy Code

Both residential and commercial building codes are voluntary. As a state, Wyoming’s codes are based on the 1989 Model Energy Code (MEC); however, some jurisdictions have chosen more stringent codes than what is suggested. However, the eight most populous jurisdictions in the state have advanced building codes in place, including the 2009 IECC and the 2012 IECC. Please visit SWEEP’s Wyoming Building Energy Codes page to learn more.

Cheyenne has adopted the 2009 IECC.

The current energy provisions are contained in Appendix Chapter 53 of the 1991 Uniform Building Code, which references the 1989 Council of American Building Officials (CABO) Model Energy Code (MEC). This code may be adopted and enforced by local jurisdictions.

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Wyoming climate zones

Climate Zones: 5B, 6B, 7

Code Adoption and Change Process

Code Change Process

Legislative and Regulatory: Proposed changes to the state energy code may be submitted to the Wyoming Department of Fire Prevention and Electrical Safety, which reviews changes and submits recommendations to the Governor-appointed Building Codes Council.

Code Change Cycle

Since 1977, the state has adopted the current version of the Uniform Building Code consistent with its three-year publication cycle. Prior to 1977, the State Fire Marshal’s Office adopted and enforced the National Fire Prevention Agency standards.

Next Code Update

New codes with the exception of the energy code were adopted in late 2015, so the next review cycle should conclude sometime in 2018.

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The 1976 edition of the Uniform Codes is adopted.

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State Toolkit

This feature allows users to track progress towards goals of adoption, compliance, and implementation in their state. If you have any updates about strides that your state has made in any of the categories below, please contact BCAP.

The Wyoming toolkit is currently under construction.



Sherry Hughes
Energy Efficiency Program Manager
Wyoming Business Council

Jim Meyers
Director, Buildings Efficiency Program
Southwest Energy Efficiency Project

Christine Brinker
Senior Associate, Buildings Efficiency Program
Southwest Energy Efficiency Project

News and Events


BCAP Projects

Energy Code Ambassadors Program

BCAP Resources

Helpful Links

Basic Facts

Population: 586,107 (US Census Bureau, 2015)

Construction Activity:
New Privately Owned Housing Units Authorized by Permit Type (US Census Construction Statistics)

Year 2014 2015
Total Units 1,901 1,903
1 unit 1,614 1,681
2 units 22 40
3 or 4 units 17 98
5 or more units 248 84

CO2 Emissions:

Commercial buildings: 1.1 MMT
Residential buildings: 1.0 MMT
(EIA, 2015)

Energy data:

Commercial building energy consumption:
63.1 trillion BTU in 2012

Residential building energy consumption:
49.2 trillion BTU in 2012

Commercial building energy expenditures:
$566.6 million in 2012

Residential building energy expenditures:
$483.7 million in 2012

Energy snapshot: According to EIA, the residential sector in Wyoming consumes 9.2% of overall energy, while the commercial sector consumes 11.8%.

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This page was last modified on: September 28, 2016