On February 2nd, 2026, ED3 announced securing approximately $13.3 million in new substation transformers to support community growth and maintain reliable electric service. This proactive investment will increase system capacity and help ensure customers continue to receive safe, dependable power.

The order, after competitive solicitation, with two different vendors includes a new 187 MVA transformer for the WAPA Test Track Substation and five (5) 32 MVA transformers for substation expansions as part of the district’s capital improvement plan.

Substation transformers play a vital role in the electric system by adjusting voltage levels so electricity can be delivered efficiently to homes, businesses, schools, and public facilities. The new substation transformers will allow the system to handle increased demand from new development and higher usage during peak periods, such as extreme summer heat.

In addition to expanding capacity, the new transformers will strengthen reliability. The WAPA Test Track #2 transformer will increase import capacity into ED3’s system and provide additional reliability from the bulk transmission system. The purchase and installation of the WAPA Test Track #2 transformer was approved by WAPA (Western Area Power Administration) as part of ED3’s interconnection request from several years ago. The in-service date is likely to occur in 2029.

Adding transformer capacity reduces strain on existing infrastructure and provides greater flexibility for operators, helping prevent outages and speed restoration when issues occur. Because large electrical equipment can take several years to manufacture, ED3 is ordering these transformers ahead of construction activities to meet project timelines. Early planning helps manage costs, secure delivery timelines, and ensures the system is prepared for future needs.

This investment reflects ED3’s commitment to responsible planning and ongoing improvements that support a strong, reliable electric system for the community for years to come.