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Public Service Company of Colorado Submits System Impact and Facility Study Agreement to Federal Energy Regulatory Commission

Strategic Insights

— 2 min read

Public Service Company of Colorado (PSCo), a wholly owned utility operating company subsidiary of Xcel Energy Inc., has submitted a non-conforming system impact and facility study agreement to the Federal Energy Regulatory Commission (FERC) in accordance with Order No. 714 and the Commission's eTariff filing requirements. The agreement, filed on June 19, 2025, outlines a system impact study for Western Area Power Administration's (WAPA) Designated Network Load (DNL) related to the Mt. Elbert Daytime Pumping project.

The agreement provides for a combined system impact and facilities study, consistent with the standard provisions of Attachment K-1. However, the agreement contains deviations from the pro forma Attachment K-1 to recognize WAPA's status as a federal entity. These deviations include modifications to sections 5.0, 8.0, 9.0, 11.0, and the elimination of section 13.0.

PSCo requests that FERC accept the agreement for filing and grant a waiver of the prior notice requirements to allow an effective date of June 10, 2025. The agreement is being filed within thirty (30) days of its requested effective date.

Key Takeaways:

  • PSCo, a wholly owned utility operating company subsidiary of Xcel Energy Inc., has submitted a non-conforming system impact and facility study agreement to FERC.
  • The agreement outlines a system impact study for WAPA's DNL related to the Mt. Elbert Daytime Pumping project.
  • The agreement contains deviations from the pro forma Attachment K-1 to recognize WAPA's status as a federal entity.
  • The deviations include modifications to sections 5.0, 8.0, 9.0, 11.0, and the elimination of section 13.0.
  • PSCo requests that FERC accept the agreement for filing and grant a waiver of the prior notice requirements.
  • The agreement is being filed within thirty (30) days of its requested effective date.
  • The parties involved include PSCo, WAPA, Xcel Energy Services Inc., and the Colorado Public Utilities Commission.

Statistics:

  • The agreement is being filed in accordance with Order No. 714 and the Commission's eTariff filing requirements.
  • The agreement requests an effective date of June 10, 2025.
  • The agreement is being filed within thirty (30) days of its requested effective date.
  • The total number of parties involved in the agreement is 10.
  • The agreement includes modifications to 5 sections and the elimination of 1 section.

Sources:

  • Order No. 714, 124 FERC P 61,270 (2008)
  • Public Service Company of Colorado, Docket No. ER16-1422-000, unpublished letter order (August 16, 2016)
  • 18 C.F.R. § 35.12 (2025)
  • 18 C.F.R. § 385.203(b)(3) (2024)
  • Public Service Company of Colorado, 176 FERC P 61,043 at P 7 (2021)
  • Prior Notice and Filing Requirements under Part II of the Federal Power Act, 64 FERC P 61,139 (1993)

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