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Overview

Installing energy-efficient windows can lower your utility bills and make your home more comfortable year-round. If your house was built before 1988, has electric heat and either single-pane windows or double-pane metal windows, upgrading will help conserve energy and save you a significant amount of money each year.

Window Replacement Rebate Details*

For Properties with Single-Pane Windows:

Residential properties built prior to 1988 may qualify for a rebate of $100 per window to replace existing single-pane windows with windows rated at .30 U-value or lower.

For Properties with Double-Pane Metal Windows:

Residential properties up to four units built per building prior to 1988 may qualify for a rebate of $50 per  window to replace existing double-pane metal framed windows with windows rated at .30 U-value or lower.

Rebates are available for residential properties with five or more units per building with existing single-pane and double-pane metal framed windows. View application here.

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Rebate Requirements

• Home must have been built before 1988
• Existing windows must be single-pane windows or double-pane metal framed windows
• The primary heat source must be electric
• The home must meet Tacoma Power’s insulation levels:
  • Attic insulation must have a rating of R12 or greater
  • Walls and floors must be insulated (no minimum R-rating requirement)

If you are installing the windows yourself, in addition to the above requirements:

• You need a pre-inspection by Tacoma Power before works begins. Call us at 253-502-8363 to schedule.
• You must submit copies of product receipts or invoices, and window permits
• Rebate applies only to materials, not labor costs
• Rebate cannot exceed the cost of materials

Not Eligible:

• New construction
• Manufactured homes

Please note that customers are eligible for either a rebate or loan, or a rebate and deferred loan.

Window Replacement Loan Details

We offer a seven-year, zero-interest loan of up to $25 per square foot for replacement of single-pane windows and double-pane metal windows in residential properties (loans are not available for properties with five or more units per building). You must have good TPU payment and credit history to be eligible.

Loan Requirements

• Home must have been built before 1988
• Existing windows must be single-pane windows or double-pane metal windows
• Your primary heat source must be electric
• Your home must meet Tacoma Power’s insulation levels:
  • Attic insulation must have a rating of R12 or greater
  • Walls and floors must be insulated (no minimum R-rating requirement)
• Work must be completed by a licensed contractor with an active Trade Ally Agreement with Tacoma Power

Not Eligible

• Limited Liability Companies (LLCs) and corporations
• Manufactured homes
• Properties with 5+ units in the building

Window Replacement Deferred Loan Details

Based on your income, you may be eligible to receive a deferred loan of up to $25 per square foot, in addition to the rebates, for the replacement of single-pane windows or double-pane metal windows in owner-occupied homes built prior to 1988.

Deferred Loan Requirements

• Home must be occupied by owner
• Home must have been built before 1988
• Your primary heat source must be electric
• Your home must meet Tacoma Power’s insulation levels:
  • Attic insulation must have a rating of R12 or greater
  • Walls and floors must be insulated (no minimum R-rating requirement)
• Homeowner must submit a Deferred Loan Application complete with supporting documents including income information
• Work must be installed by a Tacoma Power Participating Contractor

Not Eligible

• Properties with 5+ units in the building
• Manufactured homes

How to Apply 

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

• Residential Programs Application (up to 4 units)

Additional relevant documents and checklists

• Residential programs documents and checklists
  • Rebates
  • Loans

To learn more, see our Rebates page and our 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.