Upgrading your insulation can make your home more energy efficient and comfortable. It can also save you money. If your home has electric heat, upgrading to current standards could reduce your utility bills significantly for years to come.

To get the full value from insulation and air sealing, it must be installed properly. Insulation must be placed in the right location and installed without leaving gaps that diminish the performance of the insulation. Properly installed insulation in attics, walls and crawlspaces helps stop cold air drafts, holds heat inside and reduces outside noise.

Insulation Upgrade Rebate Details*

We offer rebates for insulating floors, attics, crawlspaces and walls to customers when they use a Tacoma Power Participating Contractor. The rebate amount varies based on property type. See below for details.

Residential Property (up to 4 units per building) – $500 rebate per area (floor, wall, attic).

  • Attic R11 or less to R49 with air sealing
  • Floor R11 or less to R30 or cavity fill with air sealing
  • Wall R0 to R11 or R13

Residential Properties (5+ units per building) – Click here for details

  • Attic R11 or less to R49 with air sealing
  • Floor R11 or less to R30 or cavity fill with air sealing
  • Wall R0 to R11 or R13
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Rebate Requirements

  • Primary heat source must be electric
  • If your home has knob and tube wiring, a “passing report” by a journeyman electrician is required prior to project approval. Contact us or your insulation contractor for more information on knob and tube wiring and inspections.

Not Eligible:

  • New construction
  • Manufactured homes

Please note that customers are eligible for either a rebate or a loan. Income-qualified customers may qualify for rebates and a deferred loan.

Insulation Upgrade Loan Details

We offer a seven-year, zero-interest loan up to $2 per square foot for insulation upgrades in residential homes with up to 4 units per building. You must have a good TPU payment and credit history to be eligible.

Loan Requirements

  • Must be installed by a Tacoma Power Participating Contractor

Insulation Upgrade Deferred Loan Details

Income-qualified customers may qualify to receive rebates and a deferred loan for upgrading insulation. The deferred loan of up to $2 per square foot, and $500 rebate per area should cover the cost of the upgrade.

Deferred Loan Requirements

  • You must own and live in the home.
  • You must complete and submit a Deferred Loan Application complete with supporting documents.
  • The work must be completed by a Tacoma Power Participating Contractor.

How to Apply

Simply fill out the relevant application below, check the box next to the program improvement you want to claim and submit it to us.

Residential Programs Application

Additional relevant documents and checklists

To learn more, see our Rebates page and Rebate FAQs.

*Program requirements and rebate amounts are subject to change without notice. Check with Tacoma Power for current information. Energy and heating savings are estimates only. Actual savings may vary. Tacoma Power does not make any representations, promises or warranties with respect to actual cost savings from any of the products. Tacoma Power does not endorse any particular contractor, manufacturer or product.