Each year, Tri-State develops a 10-year transmission plan that assesses future transmission needs for Tri-State’s 42 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.
Please email us your comments on Tri-State's transmission planning to TransmissionPlanning@tristategt.org.
In your comments, please include:
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First and last name
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Mailing address
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Phone number(s)
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Name of your organization
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Indicate if you are member of an electric cooperative, and if so, which one.
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Please indicate which issue/project you are commenting about
Thank you for your interest.
Filing Details PUC 3627
Details included in the filing for the Colorado PUC Rule 3627 on February 1, 2022:
10-year Transmission Plan 2022
20-year Conceptual Scenario Report 2022
Appendix A - Colorado Transmission Maps 2022
Appendix B - Metro Denver Transmission Map 2022
Appendix C - Black Hills Energy Transmission Map 2022
Appendix D - Black Hills Energy Projects 2022
Appendix E - Tri-State G&T Association Projects 2022
Appendix F - Public Service Company of Colorado Projects 2022
Appendix G - Colorado Springs Utilities Projects 2022
Appendix H - Platte River Power Authority Projects 2022
Appendix I - Western Area Power Administration - RMR Projects 2022
Appendix J - CCPG Stakeholder Process
Appendix K - Public Service Company CCPG Stakeholder Comments 2022
Appendix L - Black Hills CCPG Stakeholder Comments 2022
Appendix M - Tri-State CCPG Stakeholder Comments 2022
Appendix N - Black Hills Supporting Documents 2022
Appendix O - Tri-State Supporting Documents 2022
Appendix P - Public Service Company Supporting Documents 2022
Appendix Q - Instructions for Accessing Model Data 2022
Past filings
COPUC 3627 transmission projects and reference documents - 2020 filing
COPUC 3627 transmission projects and reference documents - 2018 filing
COPUC 3627 transmission projects and reference documents - 2016 filing