Our progress

One of ATC’s top priorities has always been electric reliability. With that focus, ATC has strengthened the grid to enable our customers to participate in and reap the benefits of the wholesale energy market.

As we continue to use our system‑wide planning process to effectively and economically improve reliability, more emphasis is being placed on the need to efficiently maintain and upgrade our older assets. Our asset management program is focused on the life‑cycle management of transmission assets. The objective is to ensure assets perform the required function in a sustainable manner while managing life‑cycle cost. Coordination of design, commissioning, operation and maintenance is crucial to developing the replacement strategy of the assets. Asset renewal is mainly driven by public and worker safety, regulatory compliance, reliability, condition and operational performance.

Due in large part to our asset management efforts, ATC consistently achieves better reliability performance than our industry peers in all voltage classes.
Our single‑focus, transmission‑only business model has produced significant results for our customers over the years.

Over the past ten years, we have:

  • upgraded more than 895 miles of transmission line,
  • improved 105 electric substations,
  • built 25 new transmission lines (367 miles)
  • connected 1,980 MW of new generation at 12 sites,
    – Includes 430 MW of renewable generation at 6 sites
  • saved customers millions in reduced energy costs with access to the marketplace and lower line losses,
  • increased import and export capability, and
  • improved transmission reliability.