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Best generator install pros near Stony Brook, NY

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TRUSTED BY STONY BROOK, NY HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon19
    Verified generator installs reviews

Top-Rated Generator install pros in Stony Brook - Updated Nov 2026

CPT Electric
5.0(
62
)
Fixed Generator - InstallPortable Generator - Install

Serving Stony Brook, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Small jobs welcome

Customers say: Quality work

"New to the area, I needed a hookup for an emergency generator and EV charger. Cole came to my home, took the time to discuss different options and answer questions, and provided a detailed, written estimate, all the same day as my initial inquiry. The project was completed within a few days. His price was very competitive and his work meticulous. A true professional."
Response time9 hrs
Response rate93%
Recommended by79%of homeowners
Avatar for C.R. Electrical Contracting
C.R. Electrical Contracting
4.3(
159
)
Portable Generator - Install

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2000

Free estimates

Offers commercial services

"Chris did a great job and worked around my schedule. Upgraded the service to 200 amps with an additional sub panel. Removed all the old equipment and mast as well. Very clean install, would highly recommend C/R Electrical."
Response time40 mins
Recommended by84%of homeowners
Avatar for DZ Electrical Contracting
DZ Electrical Contracting
4.8(
438
)
Generator - Install - For BusinessPortable Generator - Install

Serving Stony Brook, NY and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"Darren responded quickly to give an estimate, Rob installed new electrical panel, breakers and generator outlet outside. He showed up on time, we are very pleased with the job and very neat. We would recommend DZ and plan on using them in the future."
Response time5 hrs
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for A/C Performance Power, Inc.
A/C Performance Power, Inc.
5.0(
4
)
Generator - Repair - For Business

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Jim, the Owner provided timely, Expert generator repair, to get a 15 year old 30KW generator that hadnâ  t run in years operational in 30 minutes. We were fortunate to find him, and appreciate his skill, integrity...truly a consummate Professional ! 5+ Star recommendation"
Generator repair
Generator repair
Generator repair
Generator repair
Generator repair

+27

Response time9 hrs
Recommended by100%of homeowners
Avatar for R.C.K. Electric, Inc.
R.C.K. Electric, Inc.
4.3(
19
)
Portable Generator - Install

Serving Stony Brook, NY and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Ryan is awesome! We needed to upgrade our garage electrical + smoke detectors & pool alarms @ our rental property in L.I. (Permit dept requirements) Ryan arrived right when he said he would & he stayed extra to help ADT solve a new thermostat issue. He texted us pics of each repair/replacement he did before he left the property. He gives good & honest advice, & is very easy to work with! Other electricians we contacted for this last minute project didnâ t even bother to get back to us! I highly recommend RCK Electric."
Response time5 hrs
Recommended by93%of homeowners
Avatar for Mister Sparky
Mister Sparky
4.8(
8
)
Portable Generator - Install

Serving Stony Brook, NY and surrounding areas

Approved

Free estimates

Credit card accepted

As the owner of our local Mister Sparky franchise, I want to personally thank you for considering us for your electrical needs. My team and I are dedicated to providing top-notch service because we believe that every customer deserves the best. \n \nThank you for putting your trust in us.

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Generator Install FAQs, answered by experts

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

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

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.

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

The Stony Brook, NY homeowners’ guide to generator installs

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