Renewing Colorado

Transmission projects in the state

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The Avery Substation Project

Xcel Energy is proposing to construct the Avery Substation and Transmission Line project. The project consists of:

  • A new electric distribution substation
  • An associated overhead double-circuit 230,000-volt (230-kV) electric transmission line
  • Overhead distribution feeder lines near the towns of Windsor, Severance and Timnath, Colorado

The Avery Substation will occupy approximately six acres and contain an equipment enclosure, transformer, capacitor bank and switches to support the distribution feeders. The project has a target in-service date of May 31, 2018.

A Certificate of Public Convenience and Necessity (CPCN) was filed with the Colorado Public Utilities Commission (CPUC) on March 13, 2015. Pursuant to Colorado Senate Bill 07-100 requirements, the CPUC approved the CPCN application on May 13, 2015.

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Boulder Open Space

Xcel Energy is replacing 33 structures and almost four miles of an existing 115 kilovolt (kV) transmission line located on land managed by the City of Boulder’s Open Space & Mountain Parks (OSMP) and Utilities Departments. The four-mile section of line is located southwest of the city between Boulder Canyon Drive on the north and Eldorado Springs Drive on the south. 

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Greeley Projects

Xcel Energy is currently spending more than $30 million to upgrade the Greeley distribution and transmission system. We are committed to providing safe, reliable service to the city of Greeley and its customers. We are continually upgrading the electrical system infrastructure to support continued economic development and job growth.

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Lamar-Front Range (SB100)

The Lamar-Front Range Transmission Plan is a conceptual transmission plan that would consist of approximately 400 miles of new 345 kV, double-circuit transmission that could deliver an estimated 2,000 MW of new generation from energy resources near Lamar and Burlington to load centers along the Front Range.

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Lamar-Vilas (SB100)

The Lamar-Vilas project was evaluated as part of the Lamar-Front Range Plan. Lamar-Vilas would consist of approximately 60 miles of high-voltage transmission from the existing Lamar Substation, near Lamar, Colorado to the existing Vilas Substation in Baca County, Colorado.

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Moon Gulch Substation Project

The proposed Moon Gulch Substation project consists of a new 230 kilovolt (kV) substation in northwest Arvada, Colo. The substation will serve a rapidly developing area in the west/northwest Denver metropolitan area of Broomfield, Jefferson and Boulder counties. The proposed location is near Candelas Parkway off of State Highway 72 in Arvada.

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Pawnee-Daniels Park Project (SB100)

Designed to meet new load growth, improve reliability and allow the delivery of renewable energy to Front Range customers, the proposed Pawnee-Daniels Park transmission line project consists of a 125-mile double-circuit 345 kilovolt (kV) transmission line between Xcel Energy’s Pawnee Substation near Brush, Colo., and the Daniels Park Substation south of the Denver metro-area. The project area includes Arapahoe and Douglas Counties, City of Aurora and Town of Parker.

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Rifle (Ute) to Parachute Transmission Line Project

Construction on the Rifle (Ute) to Parachute transmission line project began in March, 2016. The project includes a single-circuit 230 kilovolt (kV) transmission line approximately 20 miles between Xcel Energy’s Rifle (Ute) Substation, located one mile south and one and a half miles east of the Town of Rifle, and the Parachute Substation, located at the intersection of Highways 6 and 24. The two substations will be upgraded as part of the project.

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Rush Creek Connect

Proposal to build, own and operate 600 megawatts (MW) of new wind generation, an approximately 90-mile 345 kilovolt (kV) transmission line and two new substations in eastern Colorado. The proposed 345 kV transmission line will connect the wind farm to Xcel Energy’s existing Missile Site Substation in Arapahoe County. The wind farm will cover 95,000 acres in Elbert, Lincoln, Kit Carson and Cheyenne Counties. The new transmission line will have a 150-foot wide right-of-way. The proposed transmission line routing area includes Lincoln, Elbert and Arapahoe Counties.

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SB100 Completed Projects

SB100 has completed the following projects: Pawnee-Smoky Hill, Midway-Waterton, Missile Site Switching Station and Missile Site Substation.

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San Luis Valley (SB100)

The San Luis Valley-Calumet-Comanche Transmission Project was designed to accommodate potential generation from Energy Resource Zones 4 and 5 for delivery to customers along the Front Range, in addition to improving the transmission system in the San Luis Valley area of Colorado.

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Thornton Substation Project

The City of Thornton has experienced rapid development over the past decade with the addition of new retail, commercial centers and residential communities. To support this growth, meet customers’ needs for reliable power, and continue to strengthen the local economy, Xcel Energy is working with residents to build the first substation in Thornton since 1992. It will provide the much-needed power to sustain and serve the community for future generations.

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Weld County Transmission Expansion (SB100)

Public Service Company of Colorado (PSCo), an Xcel Energy company, has been contemplating upgrades to the transmission system in Weld County since 2007 with a proposal for an Ault-Cherokee Project, which could provide transmission to Energy Resource Zone 1 for SB100.

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