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TRUSTED BY LEXINGTON, MA HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon12
    Verified generator installs reviews

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

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

Serving Lexington, 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 VMA Electric Inc
VMA Electric Inc
4.8(
468
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Lexington, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"From the office folks to the electrician who did the work -- friendly and professional. They quoted the lowest price of three estimates and did the work within a couple of weeks. I purchased my generator elsewhere online... and VMA walked me thru the process of hooking it up, running it, and shutting it down. Very helpful."
Needham Project
22kw Generac
27kw
Response time8 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Jose Baez
Jose Baez
5.0(
26
)
Fixed Generator - Install

Serving Lexington, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Warranties offered

"Jose was great to work with. He was quick to respond, came by on short notice to have a look and provide a quote for the work (Installation of one new smart thermostat and replace one old thermostat with new thermostat; requiring separation of baseboards due to wattage). Very competitive pricing, showed up on time at each appointment and got the work done quickly. He left the place cleaner than before, and walked me through everything after the installation. Can highly recommend Jose for any electrical work!"
kitchen lights
pool house lights
pool house
service upgrade
Response time7 hrs
Response rate99%
1 neighbors recently requested a quote
Avatar for Amaury Castillo Electric
Amaury Castillo Electric
4.9(
186
)
Portable Generator - Install

Serving Lexington, MA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Great work! Troubleshoot and fix a wiring issue with my generator transfer switch. Courteous and explained exactly what he was doing. Thoroughly checked his work. Will have him back for any future jobs."
Generator
Generator
Generator
Hallway
Hallway before the recessed lights

+6

Response time10 hrs
2 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Geno Farina Master Electrician
Geno Farina Master Electrician
4.4(
232
)
Fixed Generator - InstallPortable Generator - Install

Serving Lexington, MA and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"He telephoned me promptly and made arrangements to come out the next evening. He had my fixture installed quickly and taught me about the new CFL bulbs. I was very happy with the service he performed."
1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for O’LYNNE ELECTRIC LLC
O’LYNNE ELECTRIC LLC
4.5(
54
)
Fixed Generator - Install

Serving Lexington, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

OLYNNE ELECTRIC is a family-owned electrical and electrification contractor based in Methuen, serving Massachusetts and New Hampshire. Led by a master electrician licensed in both states, we help homeowners and businesses with electrical repairs, panel and service upgrades, EV chargers, standby generators, ducted and ductless heat pumps, solar panels and battery storage. We also handle lighting, additions, remodels and new construction. Whether you need a repair or are planning a larger upgrade, we focus on clear communication, thoughtful solutions and quality workmanship. Regular hours are Monday-Friday, 7 a.m.-5 p.m.; weekends are for emergency service. Contact us to discuss your project.

Additional Photos
Additional Photos
15 neighbors recently requested a quote
Recommended by82%of homeowners
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Generator Install FAQs, answered by experts

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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.

Energy output depends on turbine size, average wind speed at your site, and system efficiency. A 5 kW turbine in a good wind location can generate 8,000 to 12,000 kilowatt-hours per year, which may cover a large portion of an average home’s needs. Accurate output estimates require a professional wind assessment and a review of your household’s energy usage patterns.

The Lexington, MA homeowners’ guide to generator installs

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