Utility Energy Efficiency Programs

Updated: October 2014


Wyoming has seen a population growth rate of 1.44% per year on average from 2008 to 2012, while the consumption of electricity has increased an average of 1.84% per year over the same period. In 2012 energy expenditures per capita was $9,828, which ranked Wyoming 3rd among all U.S. states.

Summer peak demand in Wyoming reached its high point in 2011, at 1,193 MW.  In 2012, the summer peak demand was 1,130 MW.

The main electric utility in Wyoming is PacificCorp, an investor-owned utility serving five western states and doing business in Wyoming known as Rocky Mountain Power.  Rocky Mountain Power serves about 138,000 customers throughout Wyoming.  Cheyenne Light, Fuel and Power serves approximately 41,000 electric customers and 36,000 natural gas customers in the greater Cheyenne, Wyoming area.  Other customers are served by either municipal utilities or rural electric cooperatives. Questar Gas Company is the largest operating natural gas utility, serving 850,000 customers in Wyoming.

Below is a status report on energy efficiency programs in Wyoming:

Electricity Demand-Side Management

Natural Gas Demand-Side Management



  • Residential Energy Efficiency Programs
    Rocky Mountain Power offers rebates for home insulation, air duct sealing and insulation, high efficiency windows, Energy StarĀ® appliances, evaporative cooling, and high efficiency lighting.   It also offers rebates to recycle refrigerators and freezers.
  • Business Energy Efficiency Programs
    Rocky Mountain power offers engineering support and cash incentives to help commercial, industrial and agricultural customers upgrade the energy efficiency of their processes. Incentives are based on the level of energy savings and peak demand reduction of each project, and are available for both retrofits and new construction.  Under the Irrigation Load Control Program, agricultural customers receive utility bill credits if they agree to curtail irrigation pumping during summer afternoons. The self-direct program gives large commercial and industrial customers the opportunity to self-fund energy conservation projects at their facilities. Customers who engineer, implement, and commission qualifying projects receive credits to offset some or all of the DSM surcharge on their utility bills. 

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  • Residential Programs
    Cheyenne Light, Fuel and Power offers rebates for appliance recycling, installation of high-efficiency water heating and high efficiency lighting.
  • Commercial/Industrial Programs
    Cheyenne Light, Fuel and Power offers prescriptive rebates for high efficiency lighting, high efficiency motors and variable frequency drives.

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Many Wyoming cooperatives offer energy efficiency rebates to residential and commercial customers through the Touchstone Energy Cooperatives Together We Save program.  

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Questar developed a website (ThermWise.com) featuring its energy efficiency programs for businesses, homes, and builders. For details on all programs listed below.

  • Appliance Rebates
    Questar offers rebates to households that purchase energy-efficient clothes washers, water heaters, gas furnaces and boilers.
  • Home Energy Audit 
    For a modest fee, Questar will conduct an energy audit and provide a detailed report on how the home can become more energy efficient. Follow through on recommendations,  and the audit fee is credited back to the customer.  
  • Weatherization 
    Residential customers can receive rebates for installing high efficiency windows, wall insulation, attic/floor insulation, or duct sealing and insulation.

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Residential Programs

  • Gas Thermal Envelope
    The Residential Envelope Measures Retrofit program provides incentives to customers who improve the efficiency of their homes through the installation of insulation and other thermal envelope measures. In order to qualify for these rebates, a Home Energy Audit must be completed first.
  • Gas Residential New Construction 
    The Residential New Construction Program is designed to promote the construction of energy efficient single- and multifamily homes. It provides incentives to home builders to install high-efficiency, natural-gas-fired space and water heating equipment and thermal envelope efficiency measures.

Commercial/Industrial Programs

  • Prescriptive Rebates 
    Prescriptive rebates are offered for installation of natural gas heating, water heating equipment, cooking equipment and ventilation.

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