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Southeastern Wisconsin Electrical Contractor Evolves as Technology Advances

NSI Electrical Contractors, Inc is a full-service residential, commercial, and industrial electrical contractor serving Southeastern Wisconsin. From the smallest residential electrical wiring task the most complex data-com design project, NSI draws on years of electrical project management experience to deliver customer-centric solutions to Wisconsin homes and businesses.

History of NSI Electrical Contractors

NSI Electrical was founded in 1983 by Lee and Kathleen Balthazor. Originally operating out of a single home with a handful of employees, high quality services led to a growing client list. More Milwaukee electricians were hired and business relocated to the current corporate headquarters in South Milwaukee. Located just half a mile from I-94, the new office was able to quickly dispatch a growing number of service vans to residential and commercial clients across Southeastern Wisconsin.

As NSI developed lasting, mutually beneficial relationships with a growing number of industrial clients, the demand for the services of NSI’s qualified electrical work grew even stronger. Our headquarters underwent several building expansions and took on additional staff, further improving the speed and quality of our 24-hour electrical service.

NSI Electrical Contractors continues to flourish with the finest master electricians Wisconsin has to offer. This includes second generation electricians like current owner Andrew Balthazor. Andrew has over 25 years of experience and extended NSI’s invaluable safety and professional training programs. NSI grew from within as former apprentices (Jacob Leitzke) and CAD design specialists (Steve Marsicek) developed into experienced electrical project managers. A steady influx of new talent paired with a dedication to continuous technical training has kept NSI Electrical Contractors sharp –NSI now sits on the cutting edge of Wisconsin electrical design engineering services.

What We're Doing Today...

We’ve stayed true to our small family business roots by maintaining lasting personal relationships with business partners whose success we genuinely care about. Today, NSI Electrical Contractors continues to grow alongside a steady group of repeat clients, performing electrical maintenance services and executing complex industrial CAD design/build projects throughout Wisconsin.

Experience the professionalism and commitment to unequaled service provided by NSI Electrical Contractors. From new building electrical construction projects to wiring a single light socket, our Milwaukee electricians offer the best commercial electrical contractors in Wisconsin.

For Wisconsin electrical quotes, questions and information, contact NSI Electrical Contractors Milwaukee today: 414-761-4660.
Join the Team

Join Our Growing Team

Want to join the NSI team? NSI was founded on principles of customer service, integrity, and hard work. We continue to instill them into each and every one of our employees.

Join Our Growing Team

Want to join the NSI team? NSI was founded on principles of customer service, integrity, and hard work. We continue to instill them into each and every one of our employees.