Transmission Powerline Services



As the premier transmission line constructor in the West, we create and execute solutions for the most difficult EHV construction challenges. With the expertise and equipment to build any transmission project safely, we have built some of the country’s largest transmission projects to date.

Summit has constructed all sizes and types of transmission lines – from 60kV wood structures to 500 kV, three bundle, guyed V-steel, and lattice tower structures. Our team is highly experienced in installing structures on projects ranging in location from busy metropolitan areas to remote and rocky mountain expanses. By applying lessons learned and experience acquired from past projects, we have the expertise and equipment to construct any transmission project safely and efficiently. In addition to erecting new transmission lines, we have decades of experience in rebuilding, upgrading, and refurbishing existing lines.

Our transmission services include, but are not limited to:

  • Overhead Line Construction and Maintenance

  • New Overhead AC and DC Line Construction in Excess of 500 kV

  • System Upgrade/Reconfiguration, Including Reconductor

  • Structure/Conductor Relocation, Extension, and Removal

  • Structure/Conductor Troubleshooting, Repair, and Change Out

  • Dead-End and Sleeve Repairs Installation or Replacement

  • Shield Wire Installation or Replacement

  • Spacer and Damper Installation or Replacement

  • Marker Ball Installation or Replacement

  • Bird Diverter Installation or Replacement

  • Insulator Installation or Replacement

  • Helicopter Overhead Line Installation

  • Helicopter Structure Installation

  • Regularly Scheduled Climbing/Aerial Inspection

  • Pre-Design Review of Proposed Projects



SLC partners with proven subcontractors and vendors to serve our clients’ diverse and extensive needs.


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