Salt River Project (SRP) is issuing a 2026 All-Source RFP to procure additional power generation resources to support continued growth in its service territory and progress toward 2035 sustainability goals. SRP seeks summer capacity projects for the 2031-2033 timeframe and up to 2,900 MW nameplate of carbon-free energy resources including solar, wind, geothermal, and biomass. The RFP welcomes proposals for projects with a minimum of 25 MW nameplate capacity, including solar and/or wind paired with energy storage, grid-charged energy storage, natural gas combined cycle, natural gas simple cycle, combustion turbines, reciprocating engines, and geothermal resources. Respondents are encouraged to submit alternative project sizes for the same point of interconnection, and resources offering dispatch flexibility are preferred. All proposals must include detailed information on pricing, site control, transmission arrangements, permit status, and equipment specifications.
Key schedule dates include: RFP issue date of February 23, 2026; web conference for potential respondents on March 11, 2026; Pre-Bid Information Due Date of April 3, 2026 at 5:00 PM Arizona time (requiring Notice of Intent to Respond and executed Non-Disclosure Agreement); Proposal Due Date of April 29, 2026 at 5:00 PM Arizona time; and Short List Notifications expected in November 2026. SRP expects to present top scoring resource options and recommendations to its Board of Directors in early 2027.
Proposals must be submitted electronically via the Wood Mackenzie eRFx platform at https://srpnet.com/doing-business/suppliers/proposal-request. All proposal materials become SRP property and will not be returned. A non-refundable bid fee of $10,000 per project is required, with each proposal that proposes a unique dedicated interconnection considered a separate project. SRP will develop self-build options for flexible natural gas, solar, and storage projects and will compare submitted proposals against these internal options. Proposals will be evaluated based on capacity contribution, flexibility, resource diversity, capacity cost, energy cost, emissions, land/water use, development risk, counterparty risk, and location. Respondents must demonstrate site control through executed purchase or lease agreements, BLM right-of-way grants, or letters of intent. Proposed projects must provide a one-time community support contribution of $1,500 per MW of nameplate capacity.