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Best generator install pros near Oconomowoc, WI

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Top-Rated Generator install pros in Oconomowoc - Updated Nov 2026

Avatar for Mister Sparky of Brew City
Mister Sparky of Brew City
4.9(
13
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Oconomowoc, WI and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Emergency services offered

"This is the first time I used Mr. Sparky, and they will definitely be my new go to electricians! I love that they are a small locally owned business! I called about a small non-urgent project, and they were able to come the same day, despite being backed up due to many local flooding issues. Kasey was extremely friendly and helpful on the phone and communication was excellent from start to finish. James showed up on time and was very sweet, yet professional, and my cats even loved him :) He was respectful of me and my property, and took care of my issue in no time. The price was very reasonable! I will definitely call them again, and would highly recommend!"
Branded Panel Install
Installation
Installation
Installation
Installation

+53

Response time1 day
Response rate93%
123 neighbors recently requested a quote
Avatar for Current Electric Company
Current Electric Company
4.7(
140
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Oconomowoc, WI and surrounding areas

Approved

In business since 1983

Emergency services offered

Credit card accepted

"I would recommend Current Electric to anyone! They are affordable, professional, and customer service oriented. We had Eric as our electrician and he went above and beyond for us. We had a new outlet installed, can lights installed, and ceiling fans installed. He kept us informed the whole time with updates on progress, time frames, and got our input along the way. We will definitely be using Current for all of our electric needs."
Kitchen Remodel
Landscape Lighting
Restaurant Lighting
Lighting in newly built hotel
Commercial Solar

+2

Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Suburbs Electric
Suburbs Electric
5.0(
10
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Oconomowoc, WI and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Suburbs Electric is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Project Photos
22 neighbors recently requested a quote
Avatar for Cardinal Heating & Air Conditioning
Cardinal Heating & Air Conditioning
4.8(
165
)
Fixed Generator - InstallFixed Generator - Repair

Serving Oconomowoc, WI and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"I purchased a new HVAC system from Cardinal. Everything about the job went as planned, in the amount of time we were promised. The installers were professional and cleaned up the work space very well when they were finished. I would use Cardinal again without hesitation."
Cardinal Heating Air
Cardinal Heating Air
Cardinal Heating Air
Cardinal Heating Air
Cardinal Heating Air

+14

123 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for In Phase Electric & Air
In Phase Electric & Air
4.1(
170
)
Fixed Generator - Install

Serving Oconomowoc, WI and surrounding areas

Approved

In business since 2009

Emergency services offered

Small jobs welcome

"Got a new air conditioner and furnace installed in a day....Tyler was able to bypass the circuit board in the furnace so that we had air conditioning until they could install the new units.... very professional and timely"
AC Tune Up
Nee an AC Tune Up?
Electrical Panel
Team and Job photos
Team and Job photos

+53

Response time5 hrs
16 neighbors recently requested a quote
Recommended by87%of homeowners
Showing 1-10 of 41
Generator Install FAQs, answered by experts

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

The Oconomowoc, WI homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.