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    Average homeowner rating
  • Verified reviews icon14
    Verified generator installs reviews

Top-Rated Generator install pros in Princeton Junction - Updated Nov 2026

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

Serving Princeton Junction, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Glen and his team were prompt and professional during both installation and annual maintenance. We lost power during the last hurricane and the generator worked perfectly. Pricing was very good and Glen was even able to get me an extended warranty (promo from Generac). I would recommend Green Sun."
Ruisi
Oceanport
Additional Photos
Additional Photos
Additional Photos

+55

Response time5 days
Response rate100%
9 neighbors recently requested a quote
Avatar for Raynor Services - Electrical/Generators
Raynor Services - Electrical/Generators
4.5(
163
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Princeton Junction, NJ and surrounding areas

Approved

In business since 1993

Free estimates

Credit card accepted

In 1993, Tom Raynor began taking on electrical construction and service jobs across southern New Jersey. With just one assistant and one beat-up truck, Tom crisscrossed the state, building a reputation for his small outfit as one that offered professional, hands-on service and reliable, high-quality results. By 1994, it was official—Raynor Services was born! \n \nSince then, that red pick-up has been upgraded to a fleet of ten fully stocked trucks. We are now a “one-stop shop” service company, specializing in electric, heating, cooling, and generator services. Raynor Services has never lost the spirit of professional, hands-on service that it was founded on. Family-owned and operated, we combine small-business service with big-business expertise. \n \nRaynor technicians are among the best in the industry. Each must complete a rigorous hiring process – including a background check, a drug test, and an HVAC or electrical proficiency examination.

Raynor Services
Raynor Services
Raynor Services
Raynor Services
Raynor Services

+15

4 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Princeton Electrical Makeover LLC
Princeton Electrical Makeover LLC
4.5(
210
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Princeton Junction, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Brian was awesome and fast and courteous. Princeton Electrical was easy to communicate and negotiate with, and offers a fair price for their labor. Had a Level 2 EV charger installed from my townhouse basement to my garage in a few hours without problems."
Tesla in charging status
Wiring Tesla Wall Connector
Full installation
Connection in the panel
Additional Photos

+26

Response time2 days
20 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Star Bright Electric
Star Bright Electric
5.0(
39
)
Portable Generator - Install

Serving Princeton Junction, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Emergency services offered

"We had a top experience with Star Bright Electric and would highly recommend them. From start to finish, they were professional, polite, and easy to work with. They communicated clearly, showed up prepared, and took the time to clarify any questions before moving forward with the work. The job was completed efficiently and everything was done well. We appreciated that they were respectful of the home, careful with the details, and made sure the work was completed properly. It can be hard to find contractors who are both skilled and pleasant to work with, but Star Bright Electric checked all the boxes. Overall, we were very happy with the experience and plan to use them again for any future electrical work."
Our Trucks
Response time11 hrs
Response rate99%
1 neighbors recently requested a quote
Avatar for A Shore Thing Electric, LLC
A Shore Thing Electric, LLC
4.7(
51
)
Portable Generator - Install

Serving Princeton Junction, NJ and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"Communicated with Michael through email without any issues. Signed an agreement for work to be done and pricing. Michael scheduled a day and time and arrived exactly at the time he said. He installed two new lights on the front of my house in about an hour. Nice guy! Highly recommend!"
Pharmecutical Cage Panel
Panel Change
125 Amp Panel
Tesla S/X/3 Car Charger
Remote Controlled Ceiling Fan

+22

Response time1 day
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Cardinal LLC
Cardinal LLC
5.0(
5
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Princeton Junction, 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.

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.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Princeton Junction, NJ homeowners’ guide to generator installs

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