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

Avatar for RAP Electric Co., Inc.
RAP Electric Co., Inc.
4.6(
137
)
Portable Generator - Install

Serving Caldwell, NJ and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"Outstanding. Prompt, courteous, knowledgeable, reliable, informative and neat. Concerned about functionality and aesthetics of all items installed. Aware of the newest products - in my instance a beautiful Decora type timer and unobtrusive vent cover for a bathroom exhaust. All at a price that is very reasonable."
Response time2 hrs
Response rate93%
Recommended by90%of homeowners
Schweiger Electrical Contracting, LLC
4.7(
78
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Caldwell, NJ and surrounding areas

Approved

In business since 2015

Free estimates

Customers say: Quality work

"Frank and his team did a fantastic job upgrading our electrical panel and wiring for our generator. He even came out to help us during off hours when we needed help with starting the generator! He is quick to get back and does above and beyond. I highly recommend and will use his company again and again!"
Response time5 hrs
Response rate87%
Recommended by94%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 Caldwell, 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%
2 neighbors recently requested a quote
Avatar for Anzalone Electric & Lighting, LLC
Anzalone Electric & Lighting, LLC
4.9(
113
)
Portable Generator - Install

Serving Caldwell, NJ and surrounding areas

Approved

In business since 2008

Free estimates

Small jobs welcome

"Scott did a great job in upgrading my service panel (100 to 200 amps) in a day as promised. He does quality work at a reasonable price. Even the town inspector says he does good work which means he does it right the first time."
Finished panel
Electric Tie in
installing breakers
The old mast
Response time8 hrs
Response rate87%
9 neighbors recently requested a quote
Michael Bianchi LLC
4.7(
44
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Caldwell, 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%
13 neighbors recently requested a quote
Avatar for Pipe Works Services Inc
Pipe Works Services Inc
4.4(
204
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Caldwell, 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"
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+93

16 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for First Wave Electrical
First Wave Electrical
4.7(
55
)
Portable Generator - Install

Serving Caldwell, 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 FAQs, answered by experts

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

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.

Costs range from $500 to $2,500, depending on generator type and installation complexity.

The Caldwell, NJ homeowners’ guide to generator installs

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