Wagner Industrial Electric is now ESI, Inc. Email Format

ConstructionOhio, United States51-200 Employees

ESI, Inc. is a regional electrical contractor based in Dayton, Ohio. The company offers electrical construction services throughout Ohio and nearby areas. It traces its roots to a 2019 merger with Wagner Industrial Electric, and its predecessor dates back to 1966.

Operating as a mid-sized player within the construction sector, ESI serves clients that require electrical project execution. In January 2026, the firm announced the appointment of Sarah Connor to the role of Senior Vice President of Marketing & Sales. The organization maintains its online presence at esielectrical.com.

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