Our History
NSI Electrical Contractors, Inc. was founded in 1983 as a home-based electrical contracting business with just six employees. Within six months, the growing company required more space, and owners Lee and Kathleen Balthazor purchased the current headquarters on Milwaukee's south side.Today, 25 years and several building additions later, the NSI employee team has grown to include a second generation of the Balthazor family.
While much has changed since NSI's early days in business, its reputation for excellence and quality of service has remained a constant, and its pride in craftsmanship continues to be a major focus. NSI provides a full range of commercial, residential and industrial electrical contacting services.