Get matched with top generator install pros in Wellesley, MA

Wellesley homeowners rate generator install pros in our network

4.5

(14 reviews)

Top-rated generator install pros.

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Find Generator install pros in Wellesley

Avatar for VMA Electric Inc
VMA Electric Inc
4.8(
462
)

Serving Wellesley, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"We have had VMA do a couple of big projects done for us. This last project involved replacing the underground electrical line from the box near the sidewalk to the house. VMA coordinated everything, Eversource disconnect and reconnect, town inspection, excavation, laying of conduit containing the new line, and installation of the new meter. They also installed an additional conduit for a future fiber optic cable. I have recommended VMA to others because of the excellent communication, work ethic, efficiency, good value for the money, courtesy, and quality of work. They solved our difficult electrical problem in a very non-stressful way."
Needham Project
22kw Generac
27kw
Response time8 hrs
33 neighbors recently requested a quote
Recommended by94%of homeowners
Dever Electric
5.0(
58
)

Serving Wellesley, MA and surrounding areas

Approved

In business since 2008

Free estimates

Offers commercial services

"Just an outstanding experience end-to-end with Matt. He responded to the outreach within minutes and was able to give me a quote a few hours later that was very fair. We installed an induction stovetop and needed a new 50amp circuit and line run in our old house, crawl space and all. He showed up right on time, and made quick work of it. Very professional and friendly. He even stayed a little longer after the job was complete to help me diagnose another problem. Couldn't recommend him more highly. Would hire him again in a minute."
Response time1 day
Response rate96%
41 neighbors recently requested a quote
Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
53
)

Serving Wellesley, 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]

64 neighbors recently requested a quote
Avatar for Ryan Cassidy
Ryan Cassidy
5.0(
11
)

Serving Wellesley, MA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"Excellent service. Ryan was professional, flexible, quick with response time and very reasonably priced. I would highly recommend his company for any electrical work needed for your home."
Garage Sub Panel
Garage Circuit Lighting/Receptacles
Garage Circuit Lighting/Receptacles
Garage Circuit
Garage Circuit

+73

Response time2 days
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Nichols Electric
Nichols Electric
4.6(
175
)

Serving Wellesley, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1987

Free estimates

Warranties offered

"Mr Nichols came quickly for the estimate, was here when he said he'd be here and had my 220 line installed in no time. I will hire him again."
Response time7 hrs
14 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
4.7(
165
)

Serving Wellesley, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1948

Free estimates

Emergency services offered

"J.T. came to evaluate installation of an over-the-range microwave. He was very thorough and explained everything so I could understand the complexities of the installation. Very friendly and competent!"
Navien Install
Backflow
Outdoor Shower
Well Tank Replacement
Filtration Installation

+62

Response time10 hrs
70 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for DES Systems
DES Systems
4.7(
159
)

Serving Wellesley, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1986

Free estimates

Emergency services offered

"Steve and team covered up all the tasks quickly and they did a great job installing switches, lights, fixing reverse polarities etc. Will definitely be hiring them again in the future"
New Electric Panel & Generator Tra
Automatic gas powered standby generator
Generator  Transf. Switch ., Elec. & Alarm pan
Response time8 hrs
1 neighbors recently requested a quote
Recommended by66%of homeowners
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Showing 1-10 of 160

FAQs for generator install projects in Wellesley, MA

When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.

Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:

  • Portable generators with 1kW–7.5kW capacity: $500–$2,000

  • Partial generators with 9kW–20kW capacity: $2,000–$6,300

  • Whole-house generators with 22kW–48kW: $5,000–$18,000

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. 

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:

  • Experience frequent or prolonged power outages

  • Work from home

  • Store a lot of cold food

  • Have a sump pump

  • Have a pump for well water

  • Use electronic medical devices

  • Live in a climate requiring heating or cooling

The Wellesley, MA homeowners’ guide to generator installs

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