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Find Generator install pros in Mashpee

Avatar for Cape Cod Electrical, Inc.
Cape Cod Electrical, Inc.
4.9(
179
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Mashpee, MA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"In additional installing a new entire switch panel, we had a plan to install a generator, but when we bought a new house in a town 40 minutes away we decided to move the generator installation to the new house and they allowed us to cancel the planned install, just three days before initial install, and reschedule the installation to the new house a good two months following the initial plan. Very flexible and supportive."
Ripped down service wire due to storm damage
After repair
After repair
Existing center light
New recessed lighting with pendent over island

+10

Response time2 days
Recommended by83%of homeowners
Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
54
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Repair+2 more

Serving Mashpee, 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]

My jobs
My jobs
My jobs
My jobs
My jobs

+17

219 neighbors recently requested a quote
Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
4.7(
166
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install+2 more

Serving Mashpee, 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
64 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Westview Electric, LLC
Westview Electric, LLC
5.0(
24
)
Fixed Generator - InstallPortable Generator - Install

Serving Mashpee, MA and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"It's so hard to find an electrician on the cape and if you do they don't always follow through but Josh was great. Right from the start Josh was a pro! He stated what needed to be done, pricing was on mark and kept in contact until we could work out a date. Would definitely use again!"
Living room recessed
Living room recessed
Garage Sconces
Deck Lights
Panel replacement

+2

Response time12 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Fagnant Electric
Fagnant Electric
4.9(
55
)
Portable Generator - Install

Serving Mashpee, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1985

Free estimates

Small jobs welcome

"Michael was very responsive with his quotation and on-site the day after I received my EV Charger to install it. He visited my home prior to give me a competitive cost estimate. I could not be more satisfied."
Bath remodel
Bath remodel
Bath remodel
Bath remodel
Response time11 hrs
Response rate87%
19 neighbors recently requested a quote
Avatar for Cotti Johnson HVAC, Inc.
Cotti Johnson HVAC, Inc.
4.3(
63
)
Fixed Generator - InstallFixed Generator - Repair

Serving Mashpee, MA and surrounding areas

Approved

In business since 1944

Free estimates

Emergency services offered

"Tim P, Generator Advisor, visited our house and gave on the spot estimatesâ ¦..he was GREAT. Licensed Electrician who knew his business and was easy to speak with. Timely communications and responses to text messages! Tim was helpful answering questions after the generator was installed. We talked to 5 Generac dealers and a Kohler dealer. Cotti-Johnson had the best pricing in the South Shore area. We highly recommend this company. If you are thinking about buying a standby generator, Cotti Johnson is the company to callâ ¦..Art V"
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%
100 neighbors recently requested a quote
Devin Tremblay Electric Inc
4.9(
7
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Mashpee, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"Devin was a pleasure to work with and did a wonderful job doing the electrical repairs we asked of him! He even included a few extra things at no extra cost and was the most reasonably priced man in the area for the job! Thanks again Devin! Would absolutely hire again!"
Response time5 hrs
Recommended by57%of homeowners
Eric A Stewart, Electrician
5.0(
6
)
Portable Generator - Install

Serving Mashpee, MA and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

Since 1995, Eric A Stewart has been providing General Electrical Contractor services from East Falmouth. A local full-service contractor providing custom solutions for residential and commercial owners. Contact Eric today for all your electrical contracting projects.

Response time2 days
21 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Services & More LLC
Services & More LLC
4.9(
25
)
Portable Generator - Repair

Serving Mashpee, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Adam called me immediately and met me that same day. I hired the company and they cut my grass that same day. They used a ride on mower and my land is uneven so some areas were shorter than others. Two days later they spread 10 yards of hemlock mulch and recut some areas of my grass with push mower. They will use a push mower in the future. My yard now looks beautifully landscaped. Communication is definately key with this company. They aim to please!!"
Furniture Assembly
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel

+4

171 neighbors recently requested a quote
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Showing 1-10 of 77
Generator Install questions, answered by experts

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

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.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

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.

The Mashpee, MA homeowners’ guide to generator installs

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