Homeowners may apply for a rebate using the application linked below. You will need your Cascade Natural Gas account number and product invoices. Invoices can be faxed separately to 360.788.2396.

Homeowners can download a printable application and mail it to:

Cascade Natural Gas
Energy Efficiency Admin
1600 Iowa Street
Bellingham, WA 98229

Who is eligible to participate?

  • When applying for an incentive, please note that eligibility depends on the rebate offerings available at the time of installation.
  • You must be a Washington state customer of Cascade Natural Gas on a Residential rate schedule 503 (see your gas bill).
  • Fuel for the home’s primary heat source must be provided by Cascade Natural Gas for all heating incentives.
  • Water-heating fuel must be provided by Cascade Natural Gas for all water-heating incentives.
  • Customers applying for a heating incentive must not use a heat pump for heating and/or cooling with a natural gas furnace back-up.
  • Energy-saving measures must meet program efficiency requirements. For specifics, please review our incentive list.
  • All equipment and service measures must be installed by a Washington-licensed contractor.
  • Cascade Natural Gas incentives are based on appliances and materials that surpass Washington State code.
  • Incentives may be subject to change.
  • ENERGY STAR® homes must be approved by an ENERGY STAR verifier.
  • Weatherization measures (insulation and air sealing) must be installed by a Cascade Natural Gas Trade Ally to qualify for a rebate.

Please see our full incentive listing for additional information on rebate eligible measures, or call a CNGC Conservation Incentive Program representative at 1.866.626.4479 with questions.