Southwestern Public Service Company (SPS), an operating company subsidiary of Xcel Energy Inc., is soliciting proposals for firm natural gas transportation service to a potential generation site. This solicitation is issued in response to SPS's expected continued transition of its generation fleet over a 20-year planning period, which includes the retirement of 1,080 MW of coal-fired generation and 521 MW of aging gas steam generating units, along with buildout of renewable energy generation and evolving resource adequacy requirements within the Southwest Power Pool.
The potential generating site is the Tolk Power Plant located in Lamb County, Texas. Proponents are invited to submit service proposals that will support firm peaking and load-following resources and achieve the expectations outlined in SPS's 2023 New Mexico Integrated Resource Plan. The scope of this solicitation specifically focuses on natural gas transportation service arrangements to support generation operations at the identified facility.
Key dates in the SIP schedule are as follows: The solicitation was issued on August 20, 2025. Proponents must provide notice of their intent to submit a proposal by October 10, 2025. Service proposals are due on October 24, 2025. SPS will review proposals and select finalists by November 21, 2025. Discussions with finalists to select the winning proposal will occur in December 2025 and into Q1 2026, subject to Xcel Energy management review and approval.
Inquiries regarding this solicitation and submission of formal proposals should be directed to TolkStationSIP@xcelenergy.com. Proponents should submit service proposals using the designated XLSX template provided by SPS.