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Verified Reviews for Generator Install pros in Greenbush, ME

*The Angi rating for Generator Install companies in Greenbush, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Greenbush, ME is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on May 01, 2025

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

GM Electrical LLC
5.0(
22
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Greenbush, ME and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Gracen is excellent! I needed a transfer switch to run my generator from the electrical panel. From first quote to job done, Gracen kept in touch. He does good honest work and explains everything heâ s done. Heck, he even put up with my dog barking the whole time he was over lol. When he was done with the job, he helped me go through everything and in detail. Recommend highly"
Response time2 days
5 neighbors recently requested a quote
Recommended by76%of homeowners
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SLTD Electric, Inc.
3.3(
50
)
Fixed Generator - InstallPortable Generator - Install

Serving Greenbush, ME and surrounding areas

Approved

Super Service Award Winner

In business since 1989

Free estimates

Offers commercial services

"We have nothing but great things to say about SLTD Electric. They have come out to our house a couple times now for different projects, and they are always very communicative and deliver affordable, prompt, and effective services. They are also super friendly (and sweet to our gaggle of pets). We cannot recommend them enough."
22 neighbors recently requested a quote
Recommended by93%of homeowners
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Avatar for Baker Electric and Sons
Baker Electric and Sons
4.1(
17
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Greenbush, ME and surrounding areas

Approved

In business since 2015

Emergency services offered

Credit card accepted

"Steve and his crew are on time and professional. Always ready and willing to help."
Response time2 days
Response rate91%
68 neighbors recently requested a quote
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Avatar for CM ELECTRIC LLC
CM ELECTRIC LLC
4.4(
5
)
Fixed Generator - InstallPortable Generator - Install

Serving Greenbush, ME and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

At CM Electric, we understand how frustrating it is to deal with contractors who don’t pick up the phone. As a family-owned and operated electrical service with over 20 years of combined experience, we prioritize exceptional customer service from the very first contact. We pride ourselves on picking up when you call and maintaining an average response time of under an hour. Our team combines clear, consistent communication with dependable expertise to handle all your residential electrical needs safely and efficiently. With honest, fair pricing and a family-first commitment to quality work, CM Electric is the reliable partner you can trust to get the power back in your hands without the hassle.

Installs
Installs
Installs
Installs
3 neighbors recently requested a quote
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Avatar for Bradeen Electric & Generators, Inc.
Bradeen Electric & Generators, Inc.
4.6(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Greenbush, ME and surrounding areas

In business since 2002

Free estimates

Credit card accepted

"They also installed a Generic standby generator. Awesome"
Response time1 day
Recommended by100%of homeowners
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Avatar for Advanced Generator Solutions
Advanced Generator Solutions
5.0(
3
)
Fixed Generator - InstallFixed Generator - Repair

Serving Greenbush, ME and surrounding areas

In business since 2024

Free estimates

Offers commercial services

"Tech was on time, polite, professional, and did a great job. Iâ d highly recommend Advanced Generator Services."
Response time3 days
Recommended by100%of homeowners
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Showing 1-10 of 17
Generator Install FAQs, answered by experts

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

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 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.

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.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

The Greenbush, ME homeowners’ guide to generator installs

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

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