Customer Support

PSCo 2026 Solicitation of Interest for Service Proposal

Public Service Company of Colorado (PSCo), an operating company subsidiary of Xcel Energy Inc., is issuing this Solicitation of Interest for Service Proposal (SIP) (PDF).

In response to changes in Natural Gas Quality of supply into the PSCo mountain southern gas transmission system, PSCo issues this SIP to seek firm proposals for projects that will provide natural gas treatment or firm natural gas transportation service of pipeline quality supply. The treatment or supply must conform to the limits described in the PSCo Natural Gas Tariff. Acceptable in-service dates range from 2028 through 2029. The location of this potential treatment site is near PSCo's Tiffany Compressor  Station facility, further defined within the SIP

SIP Schedule

  • SIP issued: May 2026
  • Proponent provides notice that it will submit a proposal: June 5th, 2026
  • Service proposals (XLSX) due: June 19th, 2026
  • PSCo reviews proposals and selects finalists: September 2026
  • PSCo has discussions with finalists to select proposal, subject to Xcel Energy management review and approval: December 2026 into Q1 2027

Inquiries and the formal proposals should be provided to TiffanyGasSIP@xcelenergy.com.

Energy Saving Tip

Make sure to regularly change the air filters on your HVAC system (at least once per month). Old, clogged filters are far less efficient than new ones.

Break Ground, Not the Law

Always call 811 before digging in your yard to avoid hitting buried gas or electric lines. Not only is it the safe thing to do, but it's the law.