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TRUSTED BY MADISON, NJ HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon37
    Verified generator installs reviews

Find Generator install pros in Madison

Avatar for Green Sun Energy Services, LLC
Green Sun Energy Services, LLC
5.0(
73
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Madison, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"A wonderful experience for a complicated project! I would use Green Sun Energy again for any service they provide. They made the generator install as easy and painless as possible. The crew was kind and efficient. Lots to do for an install such as this but they did it quickly, efficiently and were extremely organized. Just how I like it! Thank you so much!! We feel protected for whatever comes our way."
Ruisi
Oceanport
Additional Photos
Additional Photos
Additional Photos

+55

Response time5 days
Response rate100%
5 neighbors recently requested a quote
Avatar for Kope Electric LLC
Kope Electric LLC
4.9(
97
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Madison, NJ and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"An inexperienced/inept contractor had installed a generator for us and we parted ways with him when we discovered he neglected to pull permits for the work. We called Kope in for a consultation and they verified that not only was the generator not big enough to power our whole home (as was our intention) but it was installed illegally. We  hired them to guide us through the permit process, and bring the generator up to code which included piping a gas line through the garage, installing the correct sized pipes and fixing several mistakes with the electric. They were prompt, professional and knowledgable and coordinated seamlessly with the plumber they recommended to complete that part of the generator installation.  We now have have a safe, operating, legal generator. I would recommend Kope without hesitation and will use them for my future electrical needs.
"
Bathroom Lighting & Electrical
Bathroom Lighting & Electrical
Bathroom Lighting & Electrical
Bathroom Lighting & Electrical
Additional Photos

+38

Response time1 day
Response rate100%
6 neighbors recently requested a quote
Avatar for RAP Electric Co., Inc.
RAP Electric Co., Inc.
4.6(
137
)
Portable Generator - Install

Serving Madison, NJ and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"Roy is the best. He spent 3 hours Saturday afternoon troubleshoot a mistake that previous electrician made, for a very reasonable price. Now the awning and front patio lights work, finally! Kids and wife happy. Hiring rap for the next projects."
Response time2 hrs
Response rate93%
Recommended by90%of homeowners
Avatar for Guardian Electric, LLC
Guardian Electric, LLC
4.9(
39
)
Fixed Generator - Install

Serving Madison, NJ and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Guardian did great work installing recessed lighting and a support box in 2 rooms. Robert and his staff were very friendly and professional,I will definitely hire them again."
Electric Rough-In
New Ceiling Fan Installation
New Service Hook-Up
New Kitchen Renovation
New Switchboard Installation

+44

Response time9 hrs
1 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Hank's Electrical Contracting LLC
Hank's Electrical Contracting LLC
5.0(
40
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Madison, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Living in Shongum Lake Area in Randolph, there are a lot of down trees/wiring, I wanted to install a backup mixed fuel generator to use during emergencies, installed a new light in my office and updated the drop ceiling lights to energy efficient lighting. Hank's Electrical Contracting updated our electrical panel installed a switch and connected our generator. Showed me how to make the switched and manage the main panel to go to generator mode. Hank's Electrical Contracting providing me and my family the safety we needed during emergency times. Pricing was fair and the service was professional. I highly recommend them for all electrical services."
Response time4 hrs
Response rate87%
3 neighbors recently requested a quote
Michael Bianchi LLC
4.7(
44
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Madison, NJ and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

We offer over 15 years of experience in the industry. At M Bianchi LLC, we combine technical expertise with a customer-first approach. Our company provides complete electrical services—from upgrades and rewiring to lighting design, smart-home integrations, and commercial installations. We pride ourselves on honesty, craftsmanship, and fast, reliable service. Whether it's a small repair or a large project, you can count on us for safe, efficient, and high-quality electrical work.

Response time12 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for Pipe Works Services Inc
Pipe Works Services Inc
4.4(
202
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Madison, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"I have used Pipe Works on numerous occasions as of this date and find them to provide excellent service at competitive prices. Their associates are great to work with and their prices are competitive. The work is always completed on time, as promised and the work area is left clean. I appreciate that they point out things that need repair in the not so distant future. It was great to wake up the other day with power coming from my new Kohler Generator"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+93

8 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for First Wave Electrical
First Wave Electrical
4.7(
55
)
Portable Generator - Install

Serving Madison, NJ and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"A+ for being prompt, accurate on time and on the scope of work. I did request to install needed equipment to run the generator and my house had some non-standard situations. I love that all challenges were solved in the right way, not the fast way. The electrician was very open-minded for debating on the possible approaches to an unexpected situations, etc. I love the work, very rational pricing and I would hire again."
Response time6 hrs
Recommended by96%of homeowners
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Generator Install questions, answered by experts

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

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

The Madison, NJ homeowners’ guide to generator installs

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