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TRUSTED BY GROTON, CT HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon14
    Verified generator installs reviews

Find Generator install pros in Groton

Avatar for R A Buckley & Son Electrical Contractors, LLC
R A Buckley & Son Electrical Contractors, LLC
4.8(
49
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Groton, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Offers commercial services

"He is extremely attentive to your needs . What he says will happen , does! He keeps all appointments and thoroughly explains what he plans to do. He is one of the most reliable, ethical , conscience businessman I have ever dealt with. I have recommended him to friends . He actually went out of his way to help Ill friends deal with their generator problems even though he had not installed it. He made arrangements for someone to fix the generator when he was not able. Highly recommended !"
Response time5 hrs
Response rate90%
4 neighbors recently requested a quote
Avatar for Klein Electric LLC
Klein Electric LLC
4.9(
22
)
Portable Generator - Install

Serving Groton, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"“Klein Electric ran the wires and terminated for my new EV charger I purchased, they made the job easier than I thought and within my schedule!” It costs $900 and took like 4 hours."
Before
After
Response time3 days
3 neighbors recently requested a quote
Recommended by31%of homeowners
Avatar for Beltran Electric
Beltran Electric
5.0(
20
)
Portable Generator - Install

Serving Groton, CT and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

"He was excellent. He showed up on time, was very efficient, knew what he was doing. I feel like he will be a great resources for future electrical needs. I will definitley call again!"
Service change
Panel Change
Panel Change
Response time9 hrs
Response rate100%
1 neighbors recently requested a quote
Deary Electric & Renovations
4.7(
33
)
Fixed Generator - InstallFixed Generator - Repair

Serving Groton, CT and surrounding areas

Approved

In business since 2001

Emergency services offered

Credit card accepted

"I highly recommend Deary Electric. After finding them through Home Advisor, I spoke on the phone with Josh just a few minutes later. They arrived when he said and called ahead 30 minutes before he arrived. Once here, Josh and his partner were able to quickly figure out what the problem was and fixed it shortly thereafter. Cost was more than fair; money well spent. Will definitely call them for future work."
Additional Photos
Response time5 days
Response rate100%
8 neighbors recently requested a quote
Avatar for JL Electric LLC
JL Electric LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Groton, CT and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"He's been the best electrician I've ever dealt with. I was extremely impressed and shocked. not only did he do a phenomenal job, but it's immaculate. There is not a little bit of wire sitting standing anywhere. He cleaned up, he was lovely, he didn't talk much, but you know, he was very busy all day because our entire electrical panel had been blown out from that storm. This is the 1st time since July 4 that we have not been sitting in our house with the lights flashing on and off."
Tesla Charger Install
Tesla Charger Install
Generator Transfer
Generator Transfer
Outside lights

+2

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Generator Install questions, answered by experts

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

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. 

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The Groton, CT homeowners’ guide to generator installs

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