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Solar and Net Metering

A New Solar Electric System

Special Notice -   Effective October 1, 2017, a new law passed during the 2017 legislative session and signed by the Governor that impacts state solar incentives took effect. All Tacoma Power customers receiving solar incentive payments as of June 30, 2017, will continue to receive incentives paid under the prior program through June 30, 2020. Customers enrolled in the new program after October 1, 2017, will receive incentives under the new program.

Tacoma Power is in the process of updating our online information to reflect the updated solar incentives program. Click here for the latest information on the new solar incentives.

Net metering

Net metering is the interconnection of electricity generating devices such as solar modules to the utility electricity grid. Net metering means that on a home with the standard primary utility meter, this meter records the net of the customer's use of utility electricity and their electricity generation. 

How it works
For example, if a customer with a 1000 Watt photovoltaic system generates 150 kWh in July, and also uses 600 kWh in their home that month, the net that will be recorded on their utility meter will be 450 kWh. The customer will pay for 450 kWh on their utility bill. By slowing the meter down with their electricity production, the customer receives the retail rate for their production.

Customer Requirements for Production Metering

Net Metering Steps

1. Submit the following by mail to:
Conservation Resources Management, Renewables Program
3628 S. 35th St.
Tacoma, WA 98409

2. Electrical Permit - You must obtain an electrical permit from Tacoma Power. Call (253) 502-8277 for permit and fee information. 

3. Electrical Inspection -
After you complete the system installation, call (253) 502-8277 to schedule your electrical inspection.

4. Incentive Payment Program -
To participate in the program and receive payment for your production of renewable energy, Tacoma Power must install a production meter on your system. Installation of this meter is $90. Your electrical inspector will initiate the process to get a meter installed. (Residential only. Commercial permit and meter fees vary.)

5. Renewable Energy System Certification
- To receive payment for your renewable energy production, you must register your system with Washington State University -

Contact Customer Energy Programs at (253) 502-8363.