Business Details
20 Years
experience
Emergency
services
Your Trusted Electrical Contractor in Southeast Wisconsin & Northern Illinois
Founded in March 2006 by Mark J. Grohs, a master electrician with over 30 years of experience, Grohs Electric has built a reputation as a trusted electrical contractor in Southeast Wisconsin and Northern Illinois. Our team consists of union-qualified electricians who complete rigorous safety training, including OSHA 10 certification, and participate in ongoing education to maintain industry expertise. We specialize in residential, commercial, and industrial electrical services, adhering to strict safety protocols and state electrical codes to ensure reliable, code-compliant installations. Our services include industrial machine wiring, commercial panel installation, residential electrical upgrades, fire alarm systems, and data cabling. We pride ourselves on honest pricing, timely project completion, and a commitment to customer satisfaction, as evidenced by long-term client relationships and industry partnerships.Our safety-first approach and technical proficiency have earned recognition from clients such as ACCO Brands and Talmer Bank. With a focus on quality over quantity, we deliver tailored electrical solutions for projects ranging from small home renovations to large-scale industrial installations. Our teams dedication to excellence is reflected in our comprehensive service offerings, including emergency troubleshooting and energy-efficient lighting retrofits. Backed by proper licensing, insurance, and bonding in Wisconsin and Illinois, we ensure accountability and trust in every project we undertake.
Services
Industrial Electrical Installation
Commercial Electrical Systems
Residential Electrical Upgrades
Fire Alarm Systems
Data Cabling
Generator Installation
Lighting Retrofits
Electrical Repairs
Service Maintenance
Agricultural Electrical Work
Details
- Year established: 2006
Highlights and features
- We employ union-qualified electricians with over 1,000 hours of classroom training and 5+ years of supervised on-the-job experience.
- Our team holds OSHA 10 certification and participates in ongoing safety training programs.
- We specialize in complex electrical applications including industrial, commercial, and residential systems.
- We guarantee timely project completion and competitive, transparent pricing.
- We maintain a strict safety program and are fully licensed, insured, and bonded in Wisconsin and Illinois.
Associations and certifications
- OSHA 10
What people say
Troubleshoot electrical problems
Prompt and courteous
Quality service
Dead on schedule
Expertise
Services
Industrial Electrical Installation
Grohs Electric specializes in full-scale industrial electrical installations including machine wiring, conveyor systems, and high-voltage applications. We handle complex projects like factory oven systems and explosion-proof installations while ensuring compliance with electrical codes and safety standards. Our team provides maintenance and repair services to minimize downtime for manufacturing facilities.
Commercial Electrical Systems
We design and install complete commercial electrical systems for schools, banks, retail stores, and office buildings. Services include panel installation, generator setup, and outdoor lighting systems operating at 120/208-277/480 volt capacities. Our team performs troubleshooting and maintenance to ensure uninterrupted operation of commercial electrical infrastructure.
Residential Electrical Services
Grohs Electric offers comprehensive residential electrical solutions from new construction to remodeling projects. We install modern electrical panels, lighting systems, and home generators while addressing code violations. Our services include kitchen lighting design, bathroom exhaust fans, and agricultural building wiring to meet homeowners' specific needs.
Fire Alarm Systems
We install and retrofit fire alarm systems for apartment complexes, hospitals, and industrial facilities. Collaborating with Wisconsin-based design specialists, we ensure code-compliant installations for conventional and high-rise evacuation systems while prioritizing occupant safety across various building types.
Data Cabling
Our partnership with leading telecom providers enables data network installations for businesses. We handle structured cabling infrastructure for voice, video, and data communications while leveraging our technical expertise to support clients' communication technology requirements in commercial settings.
People
Mark J. Grohs
Owner, Master Electrician
Mark J. Grohs founded Grohs Electric in 2006 with over 30 years of electrical experience. He completed a Wisconsin state electrician apprenticeship and holds master electrician licenses in Wisconsin and Illinois. Mark oversees all operations with a focus on quality and safety.
Questions
What types of electrical services do you offer?
We provide industrial, commercial, and residential electrical services including machine wiring, panel installation, fire alarm systems, and data cabling across Southeast Wisconsin and Northern Illinois.
Do you serve residential customers?
Yes, we handle residential projects from new construction to code violation repairs, including lighting design, generator installation, and electrical upgrades for homes and agricultural buildings.
Are your electricians qualified?
Our team consists of union-qualified electricians with over 1,000 hours of classroom training, 5+ years of supervised experience, and OSHA 10 certification in safety protocols.
Do you offer emergency electrical services?
Yes, we provide emergency troubleshooting and repair services during standard business hours for urgent electrical issues in residential and commercial settings.
Are you licensed and insured?
We are fully licensed, insured, and bonded in both Wisconsin and Illinois, meeting all regulatory requirements for electrical contracting in commercial and industrial environments.
What industries do you serve?
We work across industrial manufacturing, commercial facilities, residential construction, and agricultural sectors, handling projects from small repairs to complete system installations.
