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TRUSTED BY KENSINGTON, CT HOMEOWNERS

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

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

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 Kensington, 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%
Recommended by91%of homeowners
Avatar for OnTheGrid Electric , LLC
OnTheGrid Electric , LLC
5.0(
12
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Kensington, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Credit card accepted

"I have hired OnTheGrid for multiple projects and am always satisfied with their work. Doug and Mark are honest and fair, and won't do a job the wrong way. They are my first choice in electrical contractors, and I will be reaching out to them again soon."
Standby generator automatic transfer switch with main panel
Landscape lighting
Fuse panels to be removed in multifamily house with external circuit switches (via insurance requirement)
Portable generator panel interlock
Lighting for a parking lot

+16

Response time1 day
Response rate100%
7 neighbors recently requested a quote
Tranmer Electric, LLC
4.5(
128
)
Fixed Generator - InstallPortable Generator - Install

Serving Kensington, CT and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"Rick was AWESOME. On-time and extremely helpful. I really wanted to install a bluetooth/ceiling vent in the bathroom and new technology is always a challenge with an older home. Rick made it work and I couldn't be happier to be able to listen to tunes while showering. Very neat, clean and quite. I work from home and he was extremely respectful. He also took the time to give me additional suggestions and information on other electrical projects I am looking to do."
Before Panel change
Adding Motion detectors
 Finished panel change
Adding Motion detectors
Panel cover on

+4

Recommended by96%of homeowners
JMP Electric, LLC
4.9(
91
)
Portable Generator - Install

Serving Kensington, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"If I could give Jeremy and his team 10 stars I would, they are simply that good! He has installed recess lighting in both of the houses we have owned. Both houses we have owned have a light switch connected to an outlet. He installed new lighting and made sure that the wiring to the outlet works without a switch. He did this for both our living room and upstairs master bedroom. We also asked him if he would install a generator plug outside as well. He installed it and made sure we knew A.) how to run the generator. B.) How to turn the panel off and switch the main breaker on for the generator and C.) Made sure he labeled all breaker switches we were able to use while using the generator to power the house. I will never use anyone but Jeremy and JMP Electric moving forward on any electrical for my house. I would highly recommend him and his company. He is just simply amazing. Look no further when looking to have someone do your electrical. You really won't find anyone better."
Response time5 hrs
Response rate85%
1 neighbors recently requested a quote
Avatar for MGT Electrical Services
MGT Electrical Services
5.0(
11
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business+1 more

Serving Kensington, CT and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"They came out in the middle of a storm and promptly hooked the generator to my panel. While I thought I’d be running extension cords to my appliances it turned out that the whole house was up and running. I wish I had done this earlier. I would recommend MGT for any electrical needs. I will surely use them again."
29 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Supreme Electric, LLC
Supreme Electric, LLC
4.1(
122
)
Fixed Generator - Install

Serving Kensington, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Mike checked some outlets for me and installed a new attic fan for a reasonable price. He was on time, extremely pleasant and professional. He patiently answered questions and volunteered pertinent information. I highly recommend Supreme Electric and will be using them for any future electrical work I need to have done."
BETTER BUSINESS BUREAU RATING
Recessed and pendant lighting
Home theatre wiring and lighting
Whole house generator wiring
Generator install

+49

Response time3 hrs
Response rate94%
41 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

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.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

The Kensington, CT homeowners’ guide to generator installs

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