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  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon16
    Verified generator installs reviews

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

Avatar for Princeton Electrical Makeover LLC
Princeton Electrical Makeover LLC
4.5(
210
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Metuchen, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"This afternoon Trevor came to my house to repair an outlet. He was knowledgeable, and explained how he would proceed with the repair. He worked quickly and efficiently, and it should be noted he cleaned up upon completion. I would highly recommend Princeton Electrical in the future. Trevor was excellent."
Tesla in charging status
Wiring Tesla Wall Connector
Full installation
Connection in the panel
Additional Photos

+26

Response time2 days
22 neighbors recently requested a quote
Recommended by86%of homeowners
Almeida Electric
4.8(
127
)
Portable Generator - Install

Serving Metuchen, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Almeida Electric did a service panel upgrade upgrade for me (from 100 to 200 amps) as well generator interlock kit installation. Everything was done correctly by the code. The inspector said it was very well done as well; They are hard working honest people, and i will gladly hire them again."
 Ceiling fan installation
 Electrical Box Upgrade
Replacement of old unsafe panel with new panel
 Installation of light fixture in foyer
 Installation of hallway light fixture

+7

Response time7 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Pipe Works Services Inc
Pipe Works Services Inc
4.4(
204
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Metuchen, 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

14 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for A Shore Thing Electric, LLC
A Shore Thing Electric, LLC
4.7(
51
)
Portable Generator - Install

Serving Metuchen, NJ and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"Michael was diligent, reliable and knowledgable. I hired him to install a charging station for my electric car. He did a great job running a line from the basement to the outside of the house. and installing the charging station. He was neat and clean. His pricing was reasonable. YOu should not hesitate to hire him. He knows his stuff."
Pharmecutical Cage Panel
Panel Change
125 Amp Panel
Tesla S/X/3 Car Charger
Remote Controlled Ceiling Fan

+22

Response time1 day
Recommended by93%of homeowners
Avatar for Cardinal LLC
Cardinal LLC
5.0(
5
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Metuchen, NJ and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

Cardinal Electric is a full-service electrical contractor based in Sayreville, NJ, serving homeowners across Middlesex, Monmouth, and surrounding counties. We specialize in the projects that protect your home and raise its value: electrical panel replacements, 200A+ service upgrades, whole-home standby generator installations, Level 2 EV chargers, and electrical for kitchen, bath, basement, and addition renovations.\nOur licensed electricians handle everything from permits and utility coordination to inspection and cleanup, so you get a code-compliant installation and a single point of contact from estimate to final sign-off. We give clear, written pricing up front, show up when we say we will, and leave your home cleaner than we found it.\nWith commercial and industrial divisions behind us, we bring that same engineering discipline and safety standard to residential work. If you want it done right the first time by a team that stands behind its work, request a quote today.

24 neighbors recently requested a quote
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Generator Install FAQs, 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.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

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 cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Metuchen, NJ homeowners’ guide to generator installs

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