Important! Rocky Mountain Power's planned changes to the energy efficiency program became effective September 3, 2018. Changes include streamlining incentive tables to only include measure offerings and maximum incentive levels. Qualifications for energy efficiency measures going forward will be maintained on the wattsmart Homes program website. For questions or additional clarification, please email [email protected].

Solar Heat Gain Coefficient (SHGC)

Solar Heat Gain Coefficient is the fraction of solar radiation admitted through a window. This tells you how well the product blocks heat caused from the sun. The lower SHGC, the less solar heat it admits into your home.

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