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

Avatar for Wisconsin Generators LLC
Wisconsin Generators LLC
5.0(
10
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Germantown, WI and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I cannot say enough great things about Jamie and the team at Wisconsin Generators LLC. From the very first conversation, Jamie was professional, knowledgeable, and incredibly responsive. He took the time to walk me through all my options, answered every question thoroughly, and made sure I felt confident in the decision we were making. The installation process was seamless. The crew showed up on time, worked efficiently, and treated our property with respect. Their attention to detail and commitment to doing the job right was obvious from start to finish. Everything was clean, organized, and completed exactly as promised. What really sets Jamie apart is his integrity and customer-first approach. There was no pressure just honest recommendations and clear communication. If you’re considering a standby generator, I highly recommend Jamie and Wisconsin Generators LLC. Reliable service, expert installation, and true peace of mind. Five stars all The way!!"
Whole house back up
Installation Trailer
New propane generator
Partial home backup
Partial home backup

+1

22 neighbors recently requested a quote
Avatar for Mister Sparky of Brew City
Mister Sparky of Brew City
4.9(
13
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Germantown, WI and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Emergency services offered

"Needed to hook up my portable generator to the house. Mr Sparky was the first to call from angi so I asked for a quote. They came over very quickly and gave my wife and I a very good quote we thought. We didn't even get another, Slept on it, they called back the next day and we set set up a date. Mario showed up (very nice guy) . Said it would be a couple hours, and it was. They didn't need to turn off the whole house which was good and wired in a new electrical panel and plug on the outside. We tested it, and it worked perfectly. We are very happy. Thanks guys....!"
Branded Panel Install
Installation
Installation
Installation
Installation

+53

Response time1 day
Response rate93%
127 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 Germantown, 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
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for JLK Contractor Services, LLC
JLK Contractor Services, LLC
4.3(
101
)
Portable Generator - Install

Serving Germantown, WI and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"I would hire Jim and his team at JLK Contractor Services again any time, they were quick to respond, and came prepared for the project and did excellent work. We had 5 overhead light fixtures wired and installed in three rooms and a closet, a bath fan installed, new outlets installed and conduit run for the garage, and office Ethernet installed. I had shopped around and had an idea of the cost and Jim s team came in under my initially planned budget. Great work JLK, many thanks!"
Service change-before
Service change-100 amps circuit breakers
Service change-before 60 amp round meter
Service change 100 amp rectangular meter socket
30 amp 240-volt 4 wire dryer receptacle & cord

+8

Response time2 days
Recommended by74%of homeowners
Avatar for Powerhouse, LLC
Powerhouse, LLC
5.0(
22
)
Generator - Install - For Business

Serving Germantown, WI and surrounding areas

Approved

In business since 2002

Free estimates

Offers commercial services

"Jim was very fast at coming to evaluate what we all needed to have done. He did a great job and cleaned up after he was finished. While he was here we had an issue come up for another electrical problem and he ordered the part and came back as soon as he got the part. Will definitely hire him again when we need electrical work."
Response time12 hrs
Recommended by95%of homeowners
Avatar for Suburbs Electric
Suburbs Electric
5.0(
10
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Germantown, 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 In Phase Electric & Air
In Phase Electric & Air
4.1(
170
)
Fixed Generator - Install

Serving Germantown, WI and surrounding areas

Approved

In business since 2009

Emergency services offered

Small jobs welcome

"All of their technicians were very professional and polite and helped me understand what was going on every step of the way, from the initial inspection, diagnosing the issue, deciding on a new furnace, and through the installation process. When the inspection showed that my furnace was no longer working, they even shuffled some appointments around to make sure I had working heat before it started getting too cold outside. Not only did they do a great job installing the new furnace and AC, they went out of their way to clean up the basement and duct work a bit and left things looking even better than when they got there! Mike was my technician for the initial inspection and Austin worked on the Furnace and AC install. There were a couple other techs with them as well who's names I didn't quite catch, but all of them were great!"
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 42
Generator Install FAQs, answered by experts

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

The Germantown, WI homeowners’ guide to generator installs

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