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Guarantee Electrical Company (GECO) is a distinguished national leader in the electrical contracting industry, with a rich history dating back to 1902. As an employee-owned firm, GECO is committed to delivering excellence in electrical construction, engineering, advanced technology integration, and process controls. They serve a wide array of markets including commercial, data centers, healthcare, heavy industrial, institutional, life sciences, manufacturing, mission critical facilities, power generation, renewables, transportation, and water/wastewater treatment. GECO's comprehensive services encompass preconstruction, design-build/assist, service & small projects, Building Information Modeling (BIM), prefabrication, low voltage systems, and specialized solutions for mission-critical and renewable energy projects, all driven by a core focus on safety, quality, and innovation.
Serves as the central hub for GECO's national operations, housing executive leadership, project management, engineering design teams, preconstruction services, and administrative support for all company activities.
Modern office facilities designed to foster collaboration and innovation. Likely includes advanced prefabrication workshops and technology integration labs to support their specialized services.
As an employee-owned company, GECO fosters a culture of ownership, accountability, and teamwork. Emphasis is placed on safety, continuous learning, professional development, and delivering high-quality workmanship. The environment is collaborative and innovative, encouraging employees to contribute to the company's success.
The St. Louis headquarters is significant as the origin and nerve center of a company with over a century of history and a reputation as a national leader in the electrical contracting industry. It symbolizes their long-term commitment to the region and the industry.
While primarily a national leader within the United States, Guarantee Electrical Company supports complex projects across the country. Their functions include comprehensive electrical construction, engineering, prefabrication, Building Information Modeling (BIM), low voltage systems, and specialized services for mission-critical facilities and renewable energy installations on a national scale. They do not have a significant physical office presence internationally but may collaborate on projects with global implications through their US-based operations.
3405 Bent Avenue
St. Louis
MO
USA
Address: 2301 Adams Street, Granite City, IL 62040
To provide localized expertise and rapid response for GECO's clients in Southern Illinois and the greater St. Louis metropolitan area on the Illinois side, enhancing project efficiency and client relations.
Address: 7100 E. 47th Ave. Dr. Unit C, Denver, CO 80216
To expand GECO's national footprint and serve the growing construction and infrastructure needs in Colorado and adjacent states, offering specialized electrical solutions.
Address: 560 Stone Road, Suite G, Benicia, CA 94510
To provide dedicated project management and technical services to clients in California and the Pacific West, leveraging GECO's national expertise for regional demands.
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As of April 2025, Guarantee Electrical Company' leadership includes:
Guarantee Electrical Company has been backed by several prominent investors over the years, including:
No major C-suite executive hires or departures have been publicly announced for Guarantee Electrical Company in the last 12 months. The company maintains a stable leadership team.
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Guarantee Electrical Company likely utilizes common professional email formats. While specific patterns can vary, a typical structure for companies of this nature is [firstinitial][lastname]@[companydomain.com] or [firstname].[lastname]@[companydomain.com]. The most probable format is [firstinitial][lastname]@guaranteeelectrical.com.
[firstinitial][lastname]@guaranteeelectrical.com
Format
dgralike@guaranteeelectrical.com
Example
80%
Success rate
guaranteeelectrical.com • October 5, 2023
Guarantee Electrical Company announced it received three 2023 Project Excellence Awards from the National Electrical Contractors Association (NECA) for projects in healthcare, commercial office, and institutional categories, highlighting their quality workmanship and innovation....more
guaranteeelectrical.com • June 28, 2023
Guarantee Electrical Company was named a 2023 Top Workplace by the St. Louis Post-Dispatch, based on employee feedback, underscoring its positive work environment and employee-centric culture....more
guaranteeelectrical.com • June 21, 2023
Guarantee Electrical marked a significant construction milestone with the 'topping out' ceremony for Phase II of the BJC West County Hospital project, showcasing progress on this major healthcare facility....more
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