Celebrating over 95 years of Quality service, McWilliams Electric Company is a Union Electrical Contractor performing Electrical Construction, Engineering and Maintenance. While most of our projects are located within Illinois, we have the ability to provide our services across the United States if needed.

Here at McWilliams, our team has been proud to serve our customers since 1922 with complete satisfaction before, during and after each project. We offer the latest state of the art electrical innovation in building automation, renewable energy, fiber optics and communications work. We can provide everything from a light switch to a complete turn-key electrical installation. Over the years, our innovative team has evolved our installation methods to meet the needs of each project, site and client.

Utilizing our extensive safety management system, and experienced project management team, we ensure every project is delivered safely, on time and within budget. Our IBEW-trained electricians regularly attend courses to refine their knowledge of building codes, safe practices, and new technology. From start to finish, McWilliams is the right choice for all of your Electrical needs.

• Allstate Corporate Offices
• Argonne National Laboratory
• Barrington's White House
• Chicago's South Water Purification Plant
• College of DuPage McAninch Arts Center
• Community Unit School District 303
• Fenton Community High School
• Illinois Institute of Technology
• John G. Shedd Aquarium

• Loyola University
• Nokia Technologies (formerly Alcatel-Lucent)
• Northwestern Memorial Hospital
• Northwestern University
• Oak Park Elementary School District 97
• University of Illinois at Chicago
• University of Chicago
• William Rainey Harper College