• The Strength of Innovation
  • The Strength of Experience
  • Healthcare Electrical Contractor | St. Louis | Guarantee Electrical Company
  • Electrical Construction | BIM
  • HSHS St. Elizabeth's Hospital - O'Fallon, IL
  • McKendree Metro Rec Plex
  • Award Winning Electrical Contractor
  • St. Louis College of Pharmacy Phase I
  • Guarantee Electrical Trimble
  • Energy Solutions

At Guarantee Electrical Company, our people make us strong, and our experience guarantees our work.  Consistently ranked among the top electrical contractors in the country, through our parent company and affiliates we offer more than a century of expertise in electrical engineering, preconstruction, electrical construction, design-build, communications, data and security systems, and quick response.  Every member of our employee-owned firm is empowered and motivated to provide excellent service and legendary innovation.


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