End-to-endElectric Experts
WE ARE WILLIAM CHARLES Electric
William Charles Electric is an electrical contractor specializing in municipal, industrial and high-voltage electrical utility construction.
Our Expertise
From the installation of traffic signals and underground cabling to the construction of high-voltage interconnects and substations, William Charles Electric supports a wide range of complex electrical transmission and distribution projects from beginning to end.
Engineering & Construction Management
With the goal of saving our customers time and money, we leverage our engineering, project management and construction expertise to improve constructability, efficiency and safety on our projects. Whether we’re managing or self-performing the work, we collaborate closely with our customers to ensure their project is designed to exceed all expectations.
- Transmission design services
- Transmission line topographic surveys
- Electrical studies (e.g., load flow, reactive power requirements, short circuit, conductor optimization and economic analysis)
- Identification and tracking of permitting and waivers
- Environmental reporting
- Civil and electrical design and detailed drawings
- Supplier sourcing and technical/commercial procurement evaluations
- Energization and testing
- Constructability support
Foundation & Civil Construction
William Charles Electric has a successful track record of laying foundations across a wide range of challenging terrains. Our team of highly-trained professionals is well-equipped to handle all types of civil work on our electrical projects.
- Right-of-way preparation and clearing
- Environmental mitigation and compliance
- Complete EPC foundation installation
- Conduit/duct bank installation and repair
Underground Distribution
From installing and testing low-voltage fiber optics to building complex high-voltage collection systems, we perform a full range of underground services. With a focus on safety, our experienced team reliably completes underground distribution projects on time, on budget and with a quality end result.
- Directional boring
- Trenching
- Cable plowing
- Underground splicing up to 35 kV
- Equipment installation and terminations up to 69 kV
- Installation & testing of fiber optics
Overhead Transmission & Distribution
Our customers depend on us to build the infrastructure that keeps electricity flowing. Whether we’re performing the initial installation or conducting ongoing maintenance and repairs, we have the specialized equipment and expertise needed to successfully and safely support all high-voltage transmission line needs.
- Wood, steel or concrete pole erection
- Lattice tower assembly and erection
- Wire stringing, sagging, clipping and dead-ending
- Reconductoring of existing transmission lines
- Helicopter-assisted installations
- Distribution conversion projects
- Maintenance services
- Emergency planning and response
- Make-ready work for communication infrastructure
Substation Construction & Maintenance
We combine our engineering expertise with our end-to-end electrical construction capabilities to deliver complete substation support. From laying the foundation to conducting ongoing maintenance, our substation work helps to ensure the uninterrupted flow of electricity to the communities our customers serve, all while upholding our stringent safety and quality standards.
- Substation construction from 34.5 kV to 345 kV
- GIS substation construction
- Structural steel
- Large transformer/equipment moves and logistics
- Above/below-grade raceway and grounding
- Power plant connections
- Transmission line connections & construction
- SCADA installations
Street Lighting
William Charles Electric is highly experienced in the design, installation and maintenance of outdoor street lighting systems for municipalities, industrial organizations and private developers. We have the specialized equipment and expertise to address our customers’ street lighting needs with the goal of maximizing both public and worker safety, as well as system reliability.
- Electrical design
- Pole and fixture installation
- Maintenance and repair
Signal Work
Our team has specialized training in conducting signal work. From initial electrical system design to rigging, programming and maintenance, we provide a full spectrum of services to assist in the construction and operation of these niche electrical systems.
- Traffic signal installation and retrofitting
- Signal masts
- Signal bridges
- Electronic component housing
Why Us?
Safety-First Approach
At William Charles Electric, we put safety first in everything we do. As part of our safety program, we provide frequent training and encourage everyone to take responsibility for mitigating hazards on the job site. We encourage an open dialogue and empower all employees, from top managers to the newest team members, to order a work stoppage due to potential hazards.
Cross-Market Capabilities
Historically, we have been known for our expertise in medium-voltage outside electrical work such as street lighting and traffic signal installation for municipalities. More recently, we’ve expanded into the rail and renewable energy markets. Because we have strategically built out our offering across multiple markets, we have the in-house capabilities to serve a wide range of electrical contracting needs.
Upholding the William Charles Legacy
Born out of William Charles Construction, a full-service heavy civil contractor with a 125-year history, our company is steeped in the strong values put forth by our affiliate. With an unfailing commitment to quality, safety and value engineering, we consistently deliver projects that exceed customer expectations. We take a people-centric approach to our work, always doing what’s right for our employees, our customers and communities alike.
The Power of MasTec
William Charles Electric is part of MasTec's Clean Energy and Infrastructure segment. This relationship empowers us with access to robust resources, diverse capabilities and national reach, and the ability to deliver even greater value to our customers.
Minority Business Enterprise
William Charles Electric is proud to be a Minority Business Enterprise serving the construction industry.

Join Our Team
View CareersPlease fill out the form below:
Main Office:
833 Featherstone Road Rockford, IL 61107815.654.4700
Shop:
5290 Nimz Rd Loves Park, IL 61111815.654.4700info@williamcharles.com



