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Tennies Electric

"Third Generation of the Family-Owned Business"

About Us

At Tennies Electric, we believe that great service starts with strong roots. Founded in 1985 and proudly based in Hartford, Wisconsin, our company has grown from a small family operation into one of Southeast Wisconsin’s most trusted names in electrical contracting. For over four decades, we’ve built our reputation on honesty, hard work, and a commitment to doing things right — the first time and every time.

As a family-owned and operated business, we understand the importance of relationships. Many of our customers have been with us for years, and we’re honored to serve generations of families, farmers, and business owners across the region. Whether we’re wiring a new barn, installing a standby generator, or restoring a home after storm damage, we treat every project with the same care and attention we’d give our own.

We specialize in complete electrical service for farm, industrial, commercial, and residential needs. Our team is equipped to handle everything from new construction and remodeling to light fixtures, ceiling fans, motors, and dead switches. We’re also experts in room additions, basement and kitchen renovations, and restoration work following fire or storm damage — including insurance coordination to make the process as smooth as possible.

As a proud Generac Standby Generator Dealer, we help our customers stay prepared for the unexpected. Our generator installations provide peace of mind, ensuring that homes, farms, and businesses stay powered during outages and emergencies. And with our 24/7 emergency electrical care, you can count on Tennies Electric to be there when you need us most.

Through the years, our mission has remained the same: to deliver reliable, high-quality electrical solutions with a personal touch. We’re not just powering buildings — we’re powering lives, livelihoods, and communities. When you choose Tennies Electric, you’re choosing a team that’s committed to excellence, safety, and service.

Tennies Electric — Where “We Do It All.”

Areas Served

Washington County, WI | Dodge County, WI | Hartford, WI | 30 Mile Radius

Our Certifications

State Certified
Licensed and Insured

What We Offer

Our Specialties include:

Tennies Electric specializes in a wide range of electrical services designed to meet the needs of farms, industrial facilities, and commercial properties. From wiring new construction projects and installing light fixtures and ceiling fans to handling motors, generators, and dead switches, our team brings expertise and reliability to every job. We’re proud to be a certified Generac Standby Generator Dealer, offering dependable backup power solutions for homes and businesses. Whether you're remodeling a basement or kitchen, adding a room, or recovering from storm or fire damage, Tennies Electric provides expert restoration and insurance work with care and precision. No matter the challenge, we’re here to keep your property powered, safe, and up to code.

Our Services include:

Farm Electrical Services: From grain systems to livestock facilities, Tennies Electric understands the unique demands of agricultural operations. We provide complete electrical solutions tailored to farms of all sizes — ensuring your equipment runs efficiently, safely, and reliably. Whether it’s new installations, upgrades, or troubleshooting, we’re here to keep your farm powered and productive.
Industrial Electrical Services: In industrial environments, downtime isn’t an option. Tennies Electric delivers robust electrical services designed to support manufacturing plants, warehouses, and heavy-duty operations. Our team handles everything from high-voltage systems to control panels, offering expert installation, maintenance, and repair to keep your facility running at full capacity.
Commercial Electrical Services: Your business depends on dependable power — and Tennies Electric is here to deliver. We offer complete commercial electrical services for offices, retail spaces, restaurants, and more. From lighting and wiring to energy-efficient upgrades, we help create safe, functional, and future-ready environments for your customers and staff.
Residential Electrical Services: Your home should be a place of comfort and safety. Tennies Electric provides full-service residential electrical care, including new construction, remodeling, panel upgrades, lighting design, and troubleshooting. We treat every home like our own, delivering quality workmanship and peace of mind.
Emergency Electrical Care – 24/7: Electrical emergencies don’t follow a schedule — and neither do we. Tennies Electric offers 24/7 emergency service, so when the unexpected happens, you’re never alone. Whether it’s a power outage, sparking wires, or system failure, our team responds quickly to restore safety and functionality.
Generac Standby Generators: Stay prepared with Generac Standby Generators professionally installed by Tennies Electric. These reliable backup systems automatically kick in during outages, keeping your home, farm, or business powered without interruption. We’ll help you choose the right model and ensure expert installation for long-term peace of mind.

Our Brands include:

Generac Standby Generator Dealer

Our Products include:

Generac Stand By Generators
New Construction Projects
Generators
Dead Switches
Insurance Work

Testimonials

On 7/12/2025 William Lemsky had this to say:
Called Tennies concerning a rather complex 4 way dimmer switch that I was unable to replace. Tennies spent considerable time diagnosing the issue which involved a prior "remodel box". They stuck to their original cost estimate. Excellent result and very reputable. I'd use them again in a heartbeat.

On 10/17/2023 Maddie had this to say:
Mark was great! He did a very thorough job and was so kind. Highly recommend! Testimonial written by Maddie on this site.

On 3/3/2022 kathy weiss had this to say:
Highly recommend Tennies Electric Matt and Luke did an awesome job for me have used them for many years great people Testimonial written by kathy weiss on this site.

On 2/23/2022 Colette Troeller had this to say:
Love this company! Very reliable and customer oriented. Will definitely use them again in the future!

On 2/18/2022 Brenda Lighthizer had this to say:
Very professional! Great family owned business! Highly recommend.

Contact Us

Tennies Electric
Hartford, WI 53027
Phone: (262) 644-8940

Where To Find Us

Our Hours

24 Hour Emergency Service

Holiday Hours May Vary. Please Call For Details.

Monday: 7:00 AM - 5:00 PM
Tuesday: 7:00 AM - 5:00 PM
Wednesday: 7:00 AM - 5:00 PM
Thursday: 7:00 AM - 5:00 AM
Friday: 7:00 AM - 5:00 PM

FAQ

What types of properties does Tennies Electric service?

We provide complete electrical services for farm, industrial, commercial, and residential properties throughout Southeast Wisconsin. Whether it’s a barn, factory, storefront, or home, we have the experience and tools to get the job done right.

What kind of electrical work do you do for farms?

We specialize in farm wiring, including grain systems, livestock facilities, equipment hookups, and more. Our team understands the unique electrical needs of agricultural operations and delivers dependable service tailored to your farm.

Can you help with remodeling projects?

Yes! We handle electrical work for basement and kitchen remodels, room additions, and new construction. Whether you're updating your home or expanding your space, we’ll make sure your electrical system is safe, efficient, and up to code.