NSI Electrical Contractors, Inc. is a family-owned leader in the southeast Wisconsin area with over 35 years of experience providing comprehensive electrical solutions. We design, manage, and deliver electrical services spanning residential, multi-family, commercial, and industrial properties.

Our services cover everything electric, from basic wiring repair to complex industrial installations. NSI is known for offering reliable solutions and dedicated 24-hour emergency service to all our clients. Trust our experienced team for quality work, including successful property transitions and advanced electrical management. Contact us for an estimate.