Licensed & Insured · Wisconsin Electrical Contractor
Power.
Precision.
Perfection.
Residential & Commercial Electrical Services
Our Services
Professional electrical solutions for every need
Residential Electrical
Complete home wiring, rewiring, and electrical system upgrades for safety and efficiency.
Commercial Electrical
Reliable electrical solutions for offices, retail spaces, and light commercial buildings.
Panel Upgrades
100A to 200A+ panel upgrades to support modern electrical demands and code compliance.
EV Charger Installation
Level 2 EV charger installation for Tesla, Ford, Chevy, and all electric vehicles.
Lighting Installation
Interior, exterior, landscape, and security lighting design and installation.
Troubleshooting
Expert diagnosis and repair of electrical faults, outages, and safety hazards.
Real Work. Real Results.
A look at our recent projects across Southeast Wisconsin
Why Couillard Electric?
Licensed & Insured
Fully licensed Wisconsin electrical contractor with comprehensive insurance coverage for your peace of mind.
Family-Owned
Locally owned and operated in Random Lake, WI. We treat every customer like a neighbor because you are one.
Quality Workmanship
Every project completed to the highest standards with attention to detail and code compliance.
Service Areas
Serving Southeast Wisconsin with pride
What Our Customers Say
Real reviews from real customers
“FANTASTIC service! My homeowner's warranty sent Couillard out to fix my bathroom ceiling fan. Austin was GREAT! Extremely knowledgeable and friendly. He took the time to explain everything to me and also looked at some other projects I had in my home and is providing a quote. HIGHLY RECOMMEND Couillard Electric!”
“Great service in a timely fashion. My "home warranty" declined to pay for a necessary repair, and the technician explained the issues and my options. I had my problem solved in under an hour at an affordable, fair price. Will use again.”
“Had a Great experience with Couillard Electric today. Couillard was assigned to us through our Home Warranty company. They arrived on time, gave us a heads up prior to their arrival, and worked quickly to diagnose and resolve our issue.”
Get In Touch
Ready to start your project? Contact us today.
Location
Random Lake, WI 53075
Serving SE Wisconsin
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Meet Dennis Couillard
Owner & Residential Master Electrician
Master Electrician License #1293757 · Electrical Contractor License #1325885
Wisconsin DSPS Licensed · Expires 06/30/2027
Dennis is a Wisconsin native and licensed master electrician who founded Couillard Electric in 2013. What started as a one-man operation has grown into a trusted name across six counties — but the philosophy hasn't changed. Dennis personally oversees every job to ensure it meets his standards for safety, quality, and code compliance. When you call Couillard Electric, you're not getting a faceless corporation — you're getting a family-owned business that treats your home like their own.
Frequently Asked Questions
Common questions about our electrical services
How much does an electrical panel upgrade cost in Wisconsin?
A 200-amp electrical panel upgrade in Wisconsin typically costs $1,800 to $3,500 depending on your home's existing wiring, permit requirements, and whether the utility meter base needs replacement. Couillard Electric provides free estimates for all panel upgrades.
Do I need a permit for EV charger installation in Wisconsin?
Yes, most Wisconsin municipalities require an electrical permit for Level 2 EV charger installation since it involves a dedicated 40-50 amp circuit. Couillard Electric handles all permit applications and inspections as part of our installation service.
What should I do if my circuit breaker keeps tripping?
If a circuit breaker trips repeatedly, it may indicate an overloaded circuit, short circuit, or ground fault. Avoid repeatedly resetting it. Unplug devices on that circuit and call a licensed electrician. Repeated tripping can be a fire hazard.
How do I know if my home needs rewiring?
Signs your home may need rewiring include: flickering lights, warm or discolored outlets, burning smell near outlets, two-prong outlets (ungrounded), aluminum wiring, knob-and-tube wiring, or a home built before 1970 that hasn't been updated.
Does Couillard Electric offer 24/7 emergency service?
Yes. Couillard Electric provides 24/7 emergency electrical service throughout Southeast Wisconsin. Call (262) 618-2851 for urgent electrical issues or text (262) 667-7856 to reach our AI assistant Vera anytime.
What areas does Couillard Electric serve?
Couillard Electric serves all of Southeast Wisconsin including Sheboygan County, Ozaukee County, Washington County, Milwaukee County, Waukesha County, and Racine County. Specific cities include Random Lake, Sheboygan, Port Washington, Grafton, Cedarburg, Mequon, West Bend, Milwaukee, Wauwatosa, and many more.