UniSource Energy Services achieved top-quartile reliability scores when compared to other energy providers across the nation.
Our metrics are based on the System Average Interruption Duration Index (SAIDI), which represents the average length of time a customer is without service due to weather, maintenance, equipment failure and other factors.
In 2024, the average UniSource customer was without service for about 60 minutes. That compares to a nationwide average above 100 minutes, with a number that falls well within the first quartile of results gathered by the Edison Electrical Institute.
That’s slightly higher than the 44 minutes we achieved in 2023 but an improvement over our 2022 result of about 77 minutes, which was also a top-tier result.
“We know our customers count on us to power their everyday life. If we’re doing our jobs well, the lights go on, your homes stay comfortable and things work,” said June Deering, Director of UniSource electric services. “Our values and our culture place a focus on safety, continuous improvement and innovation. We are really proud of our crews’ efforts to ensure grid resiliency and dependability even while we’re working to support sustainability and affordability.”
A number of factors go into ensuring reliability. Here are a few:
- Investments. In 2023, UniSource invested more than $23 million and thousands of hours to maintain and improve our local energy grid, following rigorous maintenance practices that ensures reliability for current and future customers.
- Planning. We prepare each year for the summer heat, the risk of wildfire and the desert winters.
- Preparedness. Continual maintenance and key prevention programs helped us achieve high reliability in recent years. UniSource uses several methods to assess needed improvements and upgrades for our local energy grid, including ground patrols and aerial inspections of our transmission systems, monitoring of substation equipment and critical analysis of our distribution circuits.
We’re also improving communication to our customers about the few outages that do happen with texts, emails and push notifications. Help us reach you when it matters most by updating your contact information on My Account.
