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Verified Reviews for Generator Install pros in Williamstown, NJ

*The Angi rating for Generator Install companies in Williamstown, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Williamstown, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on July 08, 2026

Find Generator install pros in Williamstown

Avatar for Smith Power Group, Inc.
Smith Power Group, Inc.
5.0(
19
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Williamstown, NJ and surrounding areas

Approved

In business since 2011

Free estimates

Offers commercial services

"Working with Smith Power Group, Inc. was a very rewarding and mutually beneficial experience. The owner, Carlton, sat with us and explained the entire process and answered all of our questions. The office kept us informed concerning the necessary paperwork, permits, etc. On the day of installation the crew arrived on time and proceeded to install our generator without issues. We highly recommend SPG."
Generator/ Propane
Generator 10kw
Solar Deptford
My Work
My Work

+3

Response time2 days
6 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Kidder Enterprises, LLC
Kidder Enterprises, LLC
4.6(
139
)
Portable Generator - Install

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"Ken was hired to put a sub-panel in the garage, but he notice that rain was getting in the main panel. I hired him to replace the service coming down the side of the house, through the meter box and then the main panel and sub-panel. He did a great job. He was clean and neat and he worked around my work-from-home needs to electricity. He did the service and main panel on a Saturday and I had minimal power disruption. He is friendly and knowledgeable. I would definitely hire him again."
Response time12 hrs
5 neighbors recently requested a quote
Recommended by64%of homeowners
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Avatar for Spotlight Solar, LLC
Spotlight Solar, LLC
4.7(
150
)
Portable Generator - Install

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Fabulous job . My new ceiling fan is installed perfectly."
Response time1 day
430 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for JNJ Electrical Contracting LLC
JNJ Electrical Contracting LLC
5.0(
11
)
Fixed Generator - Install

Serving Williamstown, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Offers commercial services

"Absolutely! Jeff , did an amazing jobs for us. We had an in-ground pool installed. Jeff was professional , courteous and accommodating . He also installed porch lights and fans for us . Highly recommend him!"
Kitchen renovation
Kitchen renovation
Response time4 hrs
Response rate99%
3 neighbors recently requested a quote
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Avatar for AMF Electric, LLC
AMF Electric, LLC
5.0(
3
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Williamstown, NJ and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"AMF Electric LLC installed a service cable, panel and ground rod. The service techs were knowledgeable and respectful. I had no problems with their service."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

8 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for PDQ Electric Corporation
PDQ Electric Corporation
3.5(
36
)
Fixed Generator - RepairGenerator - Repair - For Business

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Ryan was fast and did an outstanding job in running a line for a dryer hook-up. The price was reasonable."
Recessed/Pendant Lighting
Sophisticated Lighting
Pathway/Wallwash Lighting
Existing Roof Solar
Accent Lighting

+31

Recommended by84%of homeowners
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Avatar for Harris Plumbing, Heating, Air & Electrical
Harris Plumbing, Heating, Air & Electrical
3.9(
48
)
Fixed Generator - InstallFixed Generator - Repair

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1988

Credit card accepted

Customers say: Quick response

"Harris has great people to work with who really know what they are doing. They will be my number one go to for any services they offer."
Team
Team
Team
Truck
Truck

+8

Response time1 day
403 neighbors recently requested a quote
Recommended by30%of homeowners
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Avatar for Horizon Services, Inc. (NJ)
Horizon Services, Inc. (NJ)
3.9(
1,635
)
Fixed Generator - InstallPortable Generator - Install

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1989

Credit card accepted

Customers say: True professional

Experience The Horizon Difference.\n\nOn-Time Service. Up-Front Pricing. And The Job Done Right and Clean the First Time. GUARANTEED!\n\nHorizon Services is the regions largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizons Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee.\n

Recommended by88%of homeowners
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Avatar for Hutchinson Plumbing Heating Cooling, LLC
Hutchinson Plumbing Heating Cooling, LLC
3.9(
111
)
Fixed Generator - InstallFixed Generator - Repair

Serving Williamstown, NJ and surrounding areas

Approved

In business since 1948

Free estimates

Credit card accepted

If it is 2 am and your air conditioner just broke, then Hutchinson is here to help. Our company has trained Customer Service Representatives waiting to take your call, with technicians ready to fix your air conditioner 24/7. Whether you are in Gloucester County NJ or Delaware County PA, our fully-stocked repair vehicles contain all of the parts we need to get you cool again; TODAY!

Recommended by80%of homeowners
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Avatar for Ace’s Electrical Construction
Ace’s Electrical Construction
5.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Williamstown, NJ and surrounding areas

Approved

Free estimates

Offers commercial services

Hello we offer full electrical services ranging from new services, panels, new wiring, troubleshooting, lighting, kitchens, bathrooms, and so much more\n\nFully Licensed in PA, NJ and DE\n\n

Service
Service
Service
Service
Request Quote
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Generator Install questions, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial installation costs, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. 

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.

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

The Williamstown, NJ homeowners’ guide to generator installs

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

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