Renewable Energy Development

By providing a more robust transmission system for delivery of electric power, the entire region would benefit from the proposed project, particularly the San Luis Valley and Walsenburg areas.

Components of the proposed project would better facilitate interconnection of new generation sources to the state's power delivery infrastructure and provide the needed capacity on the transmission lines to support the development of renewable resources.

The solar and wind industries bring economic diversity to these rural Colorado regions. Economic analyses show that solar and wind generation facilities contribute to significant economic growth in private investment and create permanent, high-paying jobs.

The Colorado Governor's Energy Office has identified the San Luis Valley region as having the greatest potential for solar energy development in Colorado.

Renewable Energy Zones map
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SB-100 Transmission Projects
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Colorado Senate Bill 100 requirements

Southern Colorado Transmission Improvements would help meet the goals of Colorado Senate Bill 07-100, which requires rate regulated utilities, such as PSCo, to plan transmission projects that will accommodate the development of beneficial resources, including renewable generation.

PSCo's plan consists of the following elements that been outlined in Senate Bill 100:

  • Designation of energy resource zones
  • Develop plans for the construction or expansion of transmission infrastructure necessary to deliver power consistent with the timing of energy resources located in or near energy resource zones
  • Consider how transmission can be provided to encourage local ownership of renewable energy facilities
  • Submit proposed plans and applications for Certificates of Public Convenience and Necessity to the Colorado Public Utilities Commission for review.

PSCo has identified five Energy Resource Zones (ERZs) pursuant to SB 07-100. This project will affect Zones 4 and 5, which have been shown to have the highest potential in the state for solar generation development. Studies have demonstrated that the transmission capacity in Zones 4 and 5 is constrained. Once the line is complete, it would create a new high-voltage transmission line that will allow delivery of renewable energy generation from Zones 4 and 5 to customers throughout the region.


In the News

Power line generates public comments
Valley Courier
April 27, 2012


SLV power line headed back to drawing board
Pueblo Chieftain
April 27, 2012


Support for San Luis Valley line isn't powering down
Denver Post
November 2, 2011


Xcel is out, but transmission line is not
Valley Courier
November 2, 2011


Xcel likely to drop SLV solar, transmission line proposal
Pueblo Chieftain
November 1, 2011


San Luis Valley Power
Pueblo Chieftain
September 14, 2011


Colorado PUC reaffirms approval of San Luis Valley power line sought by Xcel, Tri-State
Denver Business Journal
September 2, 2011




This Web site is hosted and maintained by Tri-State and Xcel Energy. The goal is to provide Colorado residents with facts and details of transmission development as we work to provide safe, reliable electricity. We encourage and appreciate public input to the process.

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