Residential SW Washington

2019 insulation overview


A man with a white hat and mask putting up insulation in a ceiling.Energy Trust of Oregon updates its incentives annually to ensure they remain cost effective. The following tables focus on all professionally installed insulation incentives and requirements which were effective on January 1, 2019.

To download complete copies of Program Incentive Guides, please visit the Insider forms page.

Incentives – Oregon Home Retrofit: Insulation

Incentives for Oregon customers of Portland General Electric, Pacific Power,
NW Natural, Cascade Natural Gas, and Avista.
All work must comply with Home Retrofit Specification Manual requirements.
Energy ImprovementPrimary Heating Fuel or OccupancyAdditional RequirementsIncentive
Attic insulationGas or electric heat

Rentals only, either fuel
If R-11 or less, insulate to R-38.



If R-11 or less, insulate to R-38.
$0.25 per square foot

$0.50 per square foot
Wall InsulationGas heat




Electric heat



Rentals only, either fuel
Must be installed with qualifying attic insulation installation. If R-4 or less, insulate to R-11 or fill cavity. All heated exterior wall surfaces must be insulated.

If R-4 or less, insulate to R-11 or fill cavity. All heated exterior wall surfaces must be insulated.

If R-4 or less, insulate to R-11 or fill cavity. All heated exterior wall surfaces must be insulated.
$0.30 per square foot up to $150


$0.30 per square foot


$0.50 per square foot
Floor insulationGas heat





Electric heat



Rentals only, either fuel
Must be installed with qualifying attic insulation installation unless home is not site-built. If R-0, insulate to R-30 or fill cavity.


If R-0, insulate to R-30 or fill cavity.



If R-0, insulate to R-30 or fill cavity.
$0.30 per square foot up to $150



$0.30 per square foot


$0.40 per square foot
Knee Wall InsulationGas or electric heatIf R-4 or less, insulate 2x4 cavities to R-15 or insulate 2x6 cavities to R-21. Cover attic side of wall with vapor permeable air barrier. Attic insulation must be R-19 or higher for knee wall insulation to be incentivized.$0.30 per square foot
Rim Joist InsulationGas or electric heatIf R-4 or less, insulate to R-15.$0.30 per square foot

Incentives – Washington Home Retrofit

Insulation incentives are available for single-family homes.
All work must comply with Home Retrofit Specification Manual requirements.
Energy ImprovementRequirementsIncentive
Attic insulationIf R-11 or less, insulate to R-38.$0.25 per square foot
Wall InsulationIf R-4 or less, insulate to R-11 or fill cavity. All heated exterior wall surfaces must be insulated.$0.30 per square foot
Floor insulationIf R-0, insulate to R-30 or fill cavity.$0.30 per square foot
Knee Wall InsulationIf R-4 or less, insulate 2x4 cavities to R-15 or insulate 2x6 cavities to R-21. Cover attic side of wall with vapor permeable air barrier. $0.30 per square foot
Rim Joist InsulationIf R-4 or less, insulate to R-15.$0.30 per square foot

Incentives – Oregon Existing Manufactured Homes: Insulation

All work must comply with Home Retrofit Specification Manual requirements.
Energy ImprovementRequirementsIncentive
Floor insulationIf R-0, insulate to R-30 or fill cavity.


If R-0 or less, insulate to R-30 or fill cavity. Rental properties only.
$0.30 per square foot

$0.40 per square foot

For more information incentive changes and effective dates, contact the Home Retrofit Trade Ally hotline at 1.866.365.3526 or residentialta@energytrust.org.