Transmission Planning



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Transmission Planning



Each year, Tri-State develops a 10-year transmission plan that assesses future transmission needs for Tri-State’s 44 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 a new requirement of the Colorado Public Utilities Commission (CPUC), called Rule 3627, Tri-State filed its 10-year transmission plan with the CPUC on February 1, 2012.


CPUC Rule 3627 requires that government agencies and other stakeholders have an opportunity for meaningful participation in this planning process. Public comments, including alternative solutions, were collected through December 31, 2011. While there were comments and questions received that Tri-State responded to, there were no alternative solutions that were required to be included in Tri-State’s 10-year plan.  Tri-State's plan was included in a coordinated transmission plan report together with the transmission plans of Public Service Company of Colorado and Black Hills Energy.  The utilities' joint 10-year transmission plan report is available on the PUC 3627 Projects tab.

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






Updated February 1, 2012


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