XCEL/SPS - RFP for Deliverable Capacity

Southwestern Public Service Company (SPS), an operating company subsidiary of Xcel Energy Inc., is issuing this Request for Proposals (RFP) for Deliverable Capacity. SPS is seeking capacity covering the 2027 and 2028 Summer seasons (June through September) and the 2027/28 Winter season (December through March). While focused on seasonal products, SPS will evaluate offers covering longer periods. Proposals must be for a minimum of 25 MW and a maximum of 100 MW. SPS expects to execute any transaction under a WSPP, EEI, or similar agreement; if no enabling agreement exists, a long form contract will be drafted subject to agreement by both parties. A bidder may submit one or multiple proposals, but must indicate if proposals are mutually exclusive.

Offered quantities must reflect accredited Deliverable Capacity available to SPS for Planning Reserve Margin compliance, not nameplate or installed capacity. The seller must represent that the offered capacity is not committed to another entity for resource adequacy compliance during the applicable delivery periods. The seller's obligation to deliver the contracted quantity is firm, although the seller may utilize alternative qualifying resources within SPP to satisfy the obligation. Bidders must specify a fixed monthly charge in $/kW-month for the term.

The full RFP document is available for download as a PDF. Key dates include the posting date of June 25, 2026. The RFP is published by the North American Energy Markets Association on behalf of Xcel/SPS. The response deadline is not specified in the summary, but the full RFP PDF should contain the submission deadline and other details.