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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon10
    Verified generator installs reviews

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

Harland Electric Inc
4.9(
137
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Groton, MA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Bill walked me through checking the outlet and circuits. We solved the problem with no service call needed. Harland has been my electrician since the early 2000's. They have completed many projects/repairs small and large (full panel replacement after water damage to installing a exterior spotlight). Staff answering calls is pleasant and professional, Bill gets back to customers usually the same day."
Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for T K Lyden Electric & Generator, Inc.
T K Lyden Electric & Generator, Inc.
3.9(
114
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+1 more

Serving Groton, MA and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"The two young men who performed the installation were informative, professional, cordial, and they left the scene spotless. There was a technical problem with the engine on the generator itself, which they weren't able to help with, because they weren't licensed to work on the specific brand of generator. That might be something to check on before hiring for this type of job."
 Your standard 10 circuit
 Generac Whole House 20kW
 Mike and Will with a new 20kW
 Generac 20kW
 A

+45

Response time1 day
30 neighbors recently requested a quote
Recommended by91%of homeowners
T K Lyden Electric & Generator, Inc.
3.9(
114
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Groton, MA and surrounding areas

Approved

In business since 1994

Free estimates

Credit card accepted

T.K. Lyden Electric & Generator Inc. is a family owned electrical contractor with over 50 years of experience serving Central & Western Massachusetts and Southern New Hampshire. We provide complete standby power solutions featuring Generac, Kohler, Briggs & Stratton, Honeywell, and other major brands. Our team offers installation, repairs, warranty service, and annual maintenance plans.

5 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Kevin Kelley Electrical LLC
Kevin Kelley Electrical LLC
4.9(
35
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Groton, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Kevin did a great job installing my ceiling fan. Professional and personable and kept let me know what he needed to do to get job done. Job was completed quickly and workmanship was excellent. I would Highly recommend him to people I know."
Service upgrade
Response time6 hrs
Response rate98%
1 neighbors recently requested a quote
Avatar for Wilson Brothers Heating & Air Conditioning Inc
Wilson Brothers Heating & Air Conditioning Inc
4.5(
160
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Groton, MA and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"The furnaces were replaced in two different houses without any problems. The generator was placed in one of the houses with many delays. Waiting for parts we were told. When it was finally assembled it worked but daily test runs were happening. When we called to have our yearly check we were told it should only run once a week. A part needed to be replaced. Wilson Bros. shared that expense. It ran for about the next 5 years with constant maintenance but this year the mother board is gone. Wilson Bros have been wonderful but I question the quality of their equipment. One of the gas furnaces also requires costly maintenance. We never had this with our other gas furnaces. Love Wilson Bros. Don't like their replacement equipment. I just thought new things should last a little."
Three of the five heads are marked by the numbers in the blue circle. On the inside of the house is where you will find the mounted units. The slim ducts run alongside the white arrows and will eventually be covered to match the exterior of the house.
The slim ducts in the basement ceiling that connect from the branch box all the way to the 5 different heating and cooling units. These will be covered by the ceiling tiles once the job is finished.
5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Michael J Roberts
Michael J Roberts
5.0(
12
)
Fixed Generator - InstallPortable Generator - Install

Serving Groton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"Michael replaced all the dimmers throughout my home and workspace… and he replaced a kitchen fan with lights for me… and fixed an antique lamp that had great sentimental value for me. He was on time and priced each job fairly. I am grateful for his work every time I dim a light and run the fan to cool my home during the warm er months of the year. I am planning on having Michael replace my outdoor walkway lights this spring."
House remodel
House remodel
House remodel
Hot tub
House remodel

+5

Response time8 hrs
Response rate94%
17 neighbors recently requested a quote
Avatar for Joe Freel
Joe Freel
5.0(
5
)
Fixed Generator - InstallPortable Generator - Install

Serving Groton, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"If you are looking for an honest, hard-working, and highly skilled electrician, look no further. I hired him to handle a massive job—taking my entire house off old knob-and-tube wiring and upgrading the main electrical panel.Rewiring a whole house is an enormous project, but he made the entire process seamless. He was incredibly neat, organized, and respectful of my home from start to finish. He kept me updated every step of the way, answered all my questions, and made sure every single detail was perfectly up to code. The new panel looks fantastic and is beautifully labeled.It is such a relief to have peace of mind knowing the job was done right by a true professional. His work ethic is outstanding, his pricing is fair, and I would recommend him to anyone in a heartbeat. Five stars!"
5 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

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

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

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

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. 

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

The Groton, MA homeowners’ guide to generator installs

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