2025 Distributed Solar and Storage RFP
Distributed energy resources (“DERs”) are a significant component of PSE’s preferred portfolio from PSE’s Integrated Resource Plan (“IRP”) and represent a piece of PSE’s strategy for achieving the targets laid out under the Clean Energy Transformation Act (“CETA”). PSE will be issuing a voluntary Distributed Solar and Storage (“DSS”) RFP in late Q3 2025 to solicit distributed solar and storage resources.
In addition to the system-wide DER proposal solicitation, the 2025 DSS RFP contains a targeted substation capacity solicitation. In this section, PSE is seeking proposals for energy storage projects interconnected to specific substations to contribute to local capacity needs. Details can be found in section 3 of the main body of the RFP, linked below.
Updates to the schedule and documents will be published below, as well as sent to stakeholders. To be added to the DSS RFP stakeholder distribution list, contact SolarStorageRFPmailbox@pse.com.
PSE will use an online submission portal to receive proposals. A link to the portal will be posted here 30 days after the RFP is issued.
The following estimated schedule is subject to adjustment based on the actual pace of the evaluation process. More information on the DSS RFP process and timeline will be provided throughout the process.
-
2025 DSS RFP Schedule
The following represents PSE’s initial projected timeline.
Date Milestone September 30, 2025 PSE issues final DSS RFP and files it with the UTC October 30, 2025 RFP submission portal opens and PSE starts accepting proposals January 30, 2026 RFP submission portal closes and offers are due to PSE February 27, 2026 PSE posts compliance report to its RFP website, consistent with the requirements of WAC 480-107-035(5) Q2 2026 PSE completes evaluation, selects DSS RFP shortlist and notifies Respondents. Respondents are then required to begin their Schedule 152 application. Q2-Q3 2026 PSE negotiates and executes agreements with shortlisted Respondents *All submissions must be received by PSE no later than 11:59 p.m. Pacific Time, on the due date. This timetable is provided for planning purposes only and may be modified by PSE as required.
-
Updates and Notifications
As the RFP process progresses and new information becomes available, PSE will update this portion of the website to include information related to a variety of RFP topics.
Q&A from bidders and interested parties
Questions about the DSS RFP may be directed to PSE’s SolarStorageRFPmailbox@pse.com PSE will periodically tabulate and post questions received and PSE’s responses for the benefit of all interested parties. PSE will not include company names, project names, contact information or other identifying descriptors in the Q&A posted to the website.
RFP Docket Updates (UE-250731)
Interested parties can find information about the 2025 DSS RFP approval process and any subsequent updates on the WUTC's website in the DSS RFP docket UE-250731. Information on the 2024 DSS RFP and 2023 DSS RFP can be found under dockets UE-240377 and UE-220971, respectively. PSE will post here a compliance report within 30 days after the close of the bidding period, consistent with the requirements of WAC 480-107-035(5).
PSE posts a proposal summary report pursuant to WAC 480-107-035(5), which includes an attachment containing a summary of each proposal and offer received. PSE also files an informational filing in docket UE-250731 in an effort to make this information more broadly available to stakeholders. (posted 09/30/2025)
Reference Material:
- PSE Electric and Dual Fuel Service Area Zip Codes (updated 6/16/21)
- Interconnection information: http://www.oatioasis.com/psei/, updated tech specs for small generation interconnection can be found in the folder “PSE TECH SPECS FOR INTERCONNECTION” under the file name “TIIR for Non-Jurisdictional Distributed Energy Resources” (updated 4/29/2024).
- Hosting Capacity (arcgis.com): hosting capacity map
-
2025 DSS RFP Documents and Submission
PSE filed the final DSS RFP with the WUTC on September 30, 2025 in docket UE-250731. Interested parties can view and download the DSS RFP by clicking the links below, or by visiting the WUTC's DSS RFP docket UE-250731.
Questions about the DSS RFP may be submitted to the SolarStorageRFPmailbox@pse.com. PSE will periodically tabulate and post questions received, and PSE’s responses for the benefit of all interested parties. PSE will not include company names, project names, contact information or other identifying descriptors in the Q&A posted to the website. See Updates and Notifications section above to view a current copy of the Q&A.
2025 DSS RFP Materials:
RFP Main Document (9/30/2025)
Exhibit A: Evaluation Criteria and Scoring (10/03/2025)
Exhibit B: RFP Proposal Form (9/30/2025)
Exhibit C: BESS Requirements (9/30/2025)
Exhibit D: Confidentiality Agreement (9/30/2025)
Exhibit E: Avoided Cost (9/30/2025)
Exhibit F: Prototype Ownership agreement (9/30/2025)
Exhibit G: Prototype BESS agreement (9/30/2025)
Exhibit H: Prototype PPA agreement (9/30/2025)
Exhibit I: Resources (9/30/2025)
Exhibit J: Customer Consent (9/30/2025)