Have questions or need help with the Customer Connected Solar program?
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To facilitate the renewables revolution in our region, PSE has established the Distributed Renewables program. Working with our commercial customers to develop a cleaner more resilient power grid we are meeting both our region’s needs and PSE’s renewable energy goals.
Distributed Renewables' aim is to provide assistance in the development of customer-owned renewable energy projects that generate between 100 kilowatts and 5 megawatts to interconnect to the PSE electrical distribution grid. Current federal and state laws require the interconnection customer to be responsible for all costs related to connecting their system to PSE's power grid. Therefore, PSE wants to work to ensure the interconnection process is efficient, while maintaining a grid that is safe and reliable for all customers.
In addition, PSE offers Schedule 91, a Power Purchase Agreement for Qualified Facilities up to 5 megawatts. Qualified Facilities greater than 5 megawatts should refer to Schedule 92, Purchases from Qualifying Facilities of Greater Than Five Megawatts. (Refer to Resource Links, below.)
Types of systems
The program is governed by WA State Jurisdiction, PSE Electric Generation Schedule 152, and PSE Power Purchase Agreement Schedule 91, which provide for three types of interconnection:
- Export Power Only. A site with no customer load (beyond small draw for equipment operation) where the entire output is metered and connected to the distribution system.
- Import and Export Power. A site with a significant load, but less than the output capacity of the generation. Where generated power offsets imported power from PSE and where generation is in excess of the site load and is exported to PSE.
- On-site Only Power. A site where generation is less than the lowest existing customer load and there is no intention to export power to PSE. Power export will be limited by PSE specified protection devices in this case.
New and existing business customers looking to take greater control of their electricity usage are encouraged to apply when installing qualifying customer-sited, renewable technology including:
- Grid scale solar photovoltaic (PV) including community solar projects
- Energy Storage/Battery technologies
- Combined Heat and Power (CHP) projects
- Biogas and Methane: Dairy Digesters and Landfill gas projects
- Hydroelectric turbine projects
- Grid scale wind projects
- Fuel Cell technologies
- Supercritical CO2 or Hydrogen turbine technologies
A customer team including project management and engineering professionals with experience in utility grade generator interconnection is required for these types of projects.
Steps to apply
The interconnection process, from initial application submittal to final operation approval typically takes 12 to 24 months to complete. We look forward to working with you through the steps in the development of your project.
To begin the process or for more information, email us DistributedRenewables@pse.com or contact one of our Energy Advisors at 1-800-562-1482 and mention your interest in distributed renewables generation.
- State Jurisdiction Electric Generation Schedule 152 (Interconnection)
- PSE New Commercial Electric Service Application
- Schedule 152 Application – Attachment C
- Small Generation Technical Specifications - 160.70 August 2019
- PSE Electric Service Handbook (for Meter Placement)
- Power Purchase Agreement Schedule 91
- Power Purchase Agreement Schedule 91 - 2019 Rates
- Power Purchase Agreement Schedule 91 - 2019 Rates Work Paper – Distribution System
- Power Purchase Agreement Schedule 91 - 2019 Rates Work Paper – Transmission System
- FERC Qualifying Facility Information
- Non-Binding Term Sheet Schedule 92