Alamosa to Antonito Transmission Line

Project Overview

Xcel Energy is proposing to replace the 60-year-old Alamosa to Antonito 69-kilovolt (kV) transmission line in the San Luis Valley to increase electric reliability and reduce potential safety risks associated with aging poles and equipment.

The 39-mile line is critical to providing reliable service to customers and cannot be taken out of service to be replaced. For that reason, we need to build a new power line in the area, either in a new corridor adjacent to the existing line or in a separate corridor near the current location.

Xcel Energy is currently studying preliminary route options to relocate the existing line. From October 2021 through February 2022, the public will be engaged in the routing study process through two open houses that provide an opportunity for the community to learn about the project, ask questions and offer feedback for consideration in the study.

Project Need

Due to natural weathering, lightning damage and unscheduled interruptions in service, the wood pole structures, equipment and components need replacing.  The new infrastructure will address aging poles and equipment to improve electric service to homes and businesses in Alamosa and Conejos counties.

Project Description

The existing 69 kV transmission line will be rebuilt to 115 kV design standards to increase the line’s capacity to serve more customers in the future. All structures and conductor wires will be removed and rebuilt with new fire-resistant steel structures, new conductors and new Optical Ground Wire (OPGW). The OPGW keeps our system smart by providing a communication channel to transport system performance data to aid in faster, more efficient response times if power is interrupted. The OPGW also aids as a grounding source for lightning during storms.

Public Outreach

Xcel Energy is committed to working with residents, landowners, officials, and other stakeholders to explain the need for the Project and to identify a route that minimizes impacts to the environment and communities and that aligns with engineering and safety standards. Residents and landowners are encouraged to provide feedback by submitting a comment form on or before February 4, 2022 for consideration during the routing study and local permitting process. You can also email us at or calling toll-free 1-855-839-8865.

Two public open houses are scheduled in the coming months. Each will be held in two locations in the Project area, La Jara and Alamosa.

Tuesday Nov. 16, 4-7 pm
Knights of Columbus #5512 | 521 Spruce St. | La Jara, Colo. 81140

Wednesday Nov. 17, 4-7 pm
Society Hall | 400 Rose Ave. | Alamosa, Colo. 81101


  • Transmission routing study: September 2021  February 2022
  • Public outreach: October 2021 – February 2022
  • Preferred route selection: February 2022
  • Permitting: Spring 2022
  • Surveying and easement procurement: Spring – Winter 2022
  • Construction: 2023

Contact Us

Please call the project hotline at 855-839-8865 or email with any questions or concerns.