Seattle City Light LARRY WEIS, General Manager and CEO
More information for
Owners & Managers

Seattle City Light offers incentives for lighting and weatherization to help make your 5+ unit property more energy efficient. City Light Program Coordinators will assist you with all aspects of the program. You can use any qualified installer to do the work, or choose from a list of contractors who have worked with City Light before.


Seattle City Light provides incentives for multi-family housing properties with 5 or more units to increase the energy efficiency of windows and insulation.

Incentive Amounts

  • Insulation: 50% of installation cost. Maximum incentive $1 per square-foot. Contact an Energy Advisor for questions about installation locations and R-Value requirements.
  • Window replacement: $5 per square-foot incentive when replacing single-pane windows with qualified vinyl framed double-pane; $3 per square-foot incentive when replacing aluminum framed double-pane windows with qualified vinyl framed double-pane windows. This incentive also includes glass patio doors.

Custom Incentives

  • Custom incentives may be available for qualified “whole house” fans, common area ventilation and heat systems, central electric hot water systems and insulated door upgrades.


  • Building must be an apartment building, condominium, retirement community, or cooperative with 5+ units located in the Seattle City Light service area.
  • Condominiums and cooperatives must have permission of the homeowner association before a building survey is scheduled.
  • Building must have permanently installed electric space heat as its primary heat source.

  • NOTE: Incentives will not be paid for any work done prior to bid approval. If you have bids but have not yet started work, please contact us immediately so we can determine your eligibility.

To Apply

More Information

For questions or help getting started, contact a City Light Energy Advisor at (206) 684-3800.