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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon25
    Verified generator installs reviews

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

Avatar for Paul Foley Electric Co., Inc.
Paul Foley Electric Co., Inc.
4.7(
79
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Cohasset, MA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

At Premier Energy Solutions, your comfort and safety come first. We protect your home or business with turnkey, worry-free generator installations, HVAC systems, and electrical work — all backed by unmatched reliability and value.\n\nEvery project is handled by licensed professionals using top installation practices. From backup power to heating and cooling to electrical upgrades, we make it seamless, professional, and built to last.\n\nSince 1992, Premier Energy Solutions has grown from a licensed electrical contractor into a full-service power, comfort, and safety provider. We deliver a complete, turnkey experience — design, permitting, installation, testing, and support.\nGenerators. HVAC. Electrical. One trusted team.

35 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
57
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Cohasset, MA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

At Champion Electrical Services, we believe homeowners deserve better. No more no-shows, rushed work, or upsells you don't need. We built this company to do things right - with respect, craftsmanship, and pride. Every project is treated like it's being done in our own home: clean, code-compliant, and built to last. Whether you need a panel upgrade, EV charger, generator, or quick repair, we show up when it counts and earn your trust every time. \nLicensed, insured, and proudly serving MA & RI. \nWhen the lights go out, don't call just anyone. Call the Champ. \n \n(774) 331-3500 \nCalltheChamp.com \[email protected]

Hotel 4Homeless Dogs
Pan Mass Challenge
Attleboro Cheer Team
The Autism Corner
Generac Generator

+3

141 neighbors recently requested a quote
Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
4.7(
168
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install+2 more

Serving Cohasset, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1948

Free estimates

Emergency services offered

"Jason and his team with Cotti-Johnson did an excellent job updating our electrical boxes, installing the washer/dryer hookup, and getting us setup with a generator! Sam, our assigned electrician, even took the time to go through the entire operation of the generator from A-Z. I would definitely recommend them for any electrical work!"
Navien Install
Backflow
Outdoor Shower
Well Tank Replacement
Filtration Installation

+62

Response time10 hrs
60 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Zimbone Electrical Services
Zimbone Electrical Services
5.0(
18
)
Portable Generator - Install

Serving Cohasset, MA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"We originally hired Precision Electrical Services to fix faulty outlets and fuse box. We were impressed with their communication, professionalism, and quick scheduling that we hired them to install a ventilation / light fixture in our bathroom. I canâ t say enough good things about them and will use them for all of our electrical needs moving forward."
Response time6 hrs
Response rate94%
Recommended by83%of homeowners
Avatar for Cotti Johnson HVAC, Inc.
Cotti Johnson HVAC, Inc.
4.3(
63
)
Fixed Generator - InstallFixed Generator - Repair

Serving Cohasset, MA and surrounding areas

Approved

In business since 1944

Free estimates

Emergency services offered

"Expensive but professional. The electrician that did the work was excellent and seemed.to enjoy explaining what he was doing and why it had to be done that way. I felt like I learned something while he installed ceiling lights. He also cleaned up after himself like he'd never been there."
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation

+56

Response time9 hrs
Response rate97%
82 neighbors recently requested a quote
Avatar for Daniel Cash Electrician
Daniel Cash Electrician
4.6(
39
)
Portable Generator - Install

Serving Cohasset, MA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Came on time. Checked out the electrical problem with our clothes dryer and gave me an estimate. He went right to Home Depot to get new wiring and came right back and fixed the problem. Excellent service and will use him again."
Service Upgrades
Service Upgrades
Service Upgrades
Service Upgrades
Interior Lighting

+18

1 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Services & More LLC
Services & More LLC
4.8(
31
)
Portable Generator - Repair

Serving Cohasset, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Adam and his team are so kind, professional and do a fantastic job every trip. I am on the biweekly rotation and with how great my grass is doing if I ever move im going to check if they service my area before I go. The first time they came my grass was super overgrown and they explained to me clearly what their gameplay was then and asked me what I wanted with the space. I will recommend them to anyone who asks."
Furniture Assembly
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel

+4

22 neighbors recently requested a quote
Avatar for Douglas Tracy Electrician
Douglas Tracy Electrician
4.3(
30
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Cohasset, MA and surrounding areas

Approved

In business since 2019

Emergency services offered

Small jobs welcome

"Excellent experience. Douglas was very prompt and did an amazing job installing my Tesla Wall connector in my driveway and looks great , I was blown away how quickly he was able to get started and finished as had not gotten the Wall Charger and these guys had wired and fuse panels all ready to go and I texted him and he showed up shortly after and finished to and it looks and works great couldn't be happier thumbs up and would highly recommend Douglas . Excellent experience"
Zales lighting upgrade!
Zales lighting upgrade!
Zales lighting upgrade!
Zales lighting upgrade!
Zales lighting upgrade!

+22

Response time6 hrs
Response rate100%
Recommended by88%of homeowners
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Generator Install FAQs, answered by experts

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

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.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

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.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

The Cohasset, MA homeowners’ guide to generator installs

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