Business Details
43 Years
experience
Emergency
services
Trusted Electrical Contractors in Southeastern Wisconsin
NSI Electrical Contractors has been a trusted provider of comprehensive electrical services since 1983. Founded in southeast Wisconsin, our family-owned business combines decades of industry expertise with a commitment to innovation and safety. We specialize in delivering tailored electrical solutions for residential multi-family properties, commercial enterprises, and industrial facilities, supported by advanced CAD design capabilities. Our team of master electricians and project managers brings over 35 years of combined experience to every project, ensuring precision and reliability. With a proven track record of maintaining a 0.91 workers' compensation experience modification rate, we prioritize ongoing professional development and safety training.Our 24/7 emergency response team ensures uninterrupted service for critical electrical needs. From new construction installations to complex industrial systems, we partner with clients to create efficient, code-compliant electrical infrastructure. Our long-standing relationships with developers, contractors, and property managers reflect our dedication to exceeding client expectations. Headquartered in New Berlin, Wisconsin, we continue to serve as a regional leader in electrical contracting through our unwavering commitment to quality and customer satisfaction.
Services
Electrical Installation
Emergency Services
CAD Design
New Construction
Maintenance
Industrial Wiring
Commercial Repairs
Residential Upgrades
Details
- Year established: 1983
Highlights and features
- We offer 40+ years of electrical contracting experience in Wisconsin
- Our team includes Master Electricians certified by the State of Wisconsin
- We utilize advanced CAD design for precise electrical system planning
- Family-owned business with continuous operations since 1983
- Maintain industry-leading safety standards with ongoing employee training
What people say
Amazing job
Extra efforts
Transition a success
Services
Electrical Installation
NSI Electrical Contractors provides comprehensive electrical installation services for new construction projects. Our certified electricians handle complete system wiring for residential, commercial, and industrial properties. We ensure all installations meet current safety codes and efficiency standards while accommodating specific client requirements.
Emergency Services
Our emergency electrical services offer immediate response for urgent repair needs. Available 24 hours daily, our trained technicians address critical issues like power failures and system malfunctions. We prioritize rapid resolution while maintaining safety protocols to minimize business disruption.
CAD Design
NSI utilizes advanced CAD technology for precise electrical system design. Our designers create detailed plans for new installations and renovations. This digital approach ensures accurate visualization and efficient implementation of complex electrical systems across various property types.
Commercial Repairs
We provide specialized repair services for commercial electrical systems. Our team addresses lighting upgrades, power distribution issues, and equipment maintenance. Regular maintenance programs help businesses prevent unexpected failures and maintain operational continuity.
Industrial Wiring
NSI specializes in industrial electrical infrastructure with expertise in heavy-duty wiring systems. Our services include motor control installations, panel upgrades, and compliance with industrial safety standards. We support manufacturing facilities and industrial complexes with reliable power solutions.
People
Andrew Balthazor
President
Master Electrician with 35+ years experience, leading NSI since 2012. Expanded safety programs and maintains 0.91 workers' comp rating. Holds Purdue University coursework in electrical construction management.
Jacob Leitzke
Vice President
29-year NSI veteran with progression from apprentice to VP. Manages large-scale commercial projects and client relationships. Focuses on collaborative construction processes and continuous improvement initiatives.
Steve Marsicek
CAD Technician
1997 graduate of ITT Technical Institute with 27+ years electrical design experience. Specializes in CAD visualization for complex projects. Served in Gulf War as US Air Force member prior to NSI career.
Nick Semenske
Project Manager
Master Electrician since 2008 with field-to-office transition expertise. Managed major hospitality and retail projects. Combines hands-on experience with strategic project oversight since joining NSI in 1999.
Fernanda Balthazor
CFO
Oversees financial strategy and HR operations with architecture degree from Brazil. Former Kohls corporate manager brings 8+ years retail planning experience. Fluent in Portuguese and English, ensuring clear communication.
Questions
What electrical services does NSI offer?
NSI provides full-service electrical solutions including new construction, maintenance, emergency repairs, CAD design, and industrial/commercial/residential installations.
Are emergency electrical services available 24/7?
Yes, NSI offers 24-hour emergency electrical services for urgent repair needs and system failures.
Which areas does NSI serve?
We serve Southeastern Wisconsin, including Milwaukee, Madison, and surrounding communities.
What qualifications do NSI electricians have?
Our team includes Master Electricians certified by the State of Wisconsin with 25-35 years of industry experience.
What project types does NSI handle?
We manage projects ranging from single outlet installations to complex industrial systems and large-scale residential developments.
Reviews (2)
Fernanda Reikdal
Apr 11, 2021
Report
Excellent service, all under regulation. The team is also extremely friendly and talented. Highly recommend! Services: Electrical outlet & switch repair, Light fixture installation, Electrical outlet & switch installation
Miriam Castanho Bollinger
Jan 14, 2021
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We hired NSI during the remodeling of our kitchen. The entire process was smooth and extremely professional. Great communication with the everyone in the company. The gentleman working in our home was always on time, was extremely respectful, easy to work with and trustworthy. If you need electrical work, look no further. The best in town.
