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Each year, Tri-State develops a 10-year transmission plan that assesses future transmission needs for Tri-State’s member electric cooperatives. The transmission component of this plan is developed in conjunction with West Connect and the Colorado Coordinated Planning Group (CCPG), formal regional transmission planning organizations recognized by the Western Electricity Coordinating Council (WECC).

As part of the Colorado Public Utilities Commission (COPUC), Rule 3627, Tri-State files its 10-year transmission plan with the COPUC on a biennial basis each February 1.

For more information, to send us your questions or comments regarding our transmission plans, or to be added to the stakeholder outreach list for future transmission planning meetings, please email TransmissionPlanning@tristategt.org.

Details, Stakeholder Outreach and PUC filings

Transmission Corridors and Powerline Trails

FERC Standards of Conduct

  • Chief Compliance Officer designation

  • Written procedures

  • Identification of affiliate names and addresses

  • Employee staffed shared facilities

  • Transmission function employees’ job titles and job descriptions

  • Transfers of employees between marketing function and transmission function

  • Potential merger partner information

  • Waivers

  • Contemporaneous disclosure

  • Voluntary consent provision

  • Incident reporting form

  • Emergency circumstances deviations

  • Discretionary actions under the tariff

  • Discounts

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Tri-State Generation and Transmission Association
Office: 303-452-6111
1100 West 116th Avenue
Westminster, CO 80234

Mailing address:
PO Box 33695
Denver, CO 80233-0695

©2025 Tri-State Generation and Transmission Association, Inc. Power supplier to the rural west.

  • About Us
    • Annual Report
  • Powering the Future
    • Our Energy Mix
  • Electrify and Save®
    • On-Bill Repayment
    • Programs
    • Quality Install
  • Media
    • Resources
    • Blog
    • Features
    • News
    • Newsletter
    • Podcast
  • Cooperative Benefits
  • Operations
    • Wildfire
  • Search