Guarantee Electrical Company - Top Electrical Contractor in Missouri, Illinois and Colorado

About Us

Electrical Contracting Exceeding Customer Expectations

24 Hour Electrical Service

Founded in 1902 by a coalition of entrepreneurs who “guaranteed” to light the 1904 World’s Fair, Guarantee Electrical Company has grown into one of the largest and most respected national electrical contracting firms. As an electrical contractor in MissouriIllinois, Colorado and California, our team of more than 500 engineers, project managers, IBEW craft workers and office staff provides a complete spectrum of electrical services which exceed our customers requirements and expectations.

With offices in four states, Guarantee Electrical Company delivers services throughout the United States. Our affiliation with the Federated Electrical Contractors (FEC) peer network further expands our reach with partner firms in 60 cities.

Engineering News-Record consistently ranks Guarantee Electrical Company among the top specialty contractors in the United States. We serve our customers nationwide with the best in preconstruction services including electrical engineering, electrical design, design/build, and design/assist. 

Small Photo: Centene Corporate Offices - St. Louis, MO