Our progress

Since 2001, ATC’s top priority is maintaining a safe and reliable electric transmission system. As the industry evolves, we strive to make electricity a great value for our customers by strengthening the grid – which enhances their participation in the wholesale energy market. We’re driven to make smart investments in our aging transmission assets while analyzing industry trends that identify new reliability improvement projects.

ATC’s asset management program is focused on the life‑cycle management of transmission assets. Our objective is to ensure these assets perform the required function efficiently and reliably in a sustainable manner while managing life‑cycle costs. We collaborate on the design, commissioning, operation and maintenance of these assets, which is crucial to developing a comprehensive system plan and replacement strategy.

Our asset renewal process focuses on aspects of public and worker safety, regulatory compliance, reliability condition and operational performance. ATC’s transmission lines consistently achieve better reliability performance than those of our industry peers in all voltage classes, which is primarily due to our asset management efforts.

Our single‑focus, transmission‑only business model has produced significant results for our customers, and we strive to continue providing exceptional service for them in the years to come.

For all projects since the publication of the 2020 TYA, we have:

  • Upgraded 11 transmission line (156 miles)
  • Improved 23 electric substations
  • Built 2 new transmission line (2 miles)
  • Built 2 new substations
  • Retired 2 substations
  • Signed 18 new generator interconnection agreements with commercial operation dates starting in 2021
    • Includes about 1,500 MWs of renewable generation including solar, wind and storage
    • Completed work on 3 generator interconnections to interconnect 273 MW of solar and wind by 2022

For network projects over the past ten years, we have:

  • Upgraded more than 823 miles of transmission line
  • Improved 120 electric substations
  • Built 22 new transmission lines (205 miles)
  • Connected 2,147 MW of new generation at 12 sites
    • Includes 294 MW of renewable generation at 4 sites