Top-rated generator installers.

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There are 3 highly-rated local generator installers.

Generator installers in Westbrook

Avatar for Generator Supercenter of New Hampshire
Generator Supercenter of New Hampshire
28 Portsmouth Ave
5.00(
10
)
Approved Pro
Generator Supercenter of New Hampshire
28 Portsmouth Ave
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 local quotes requested

At Generator Supercenter, we are committed to securing your home and peace of mind with back up power solutions. When bad weather hits or an electrical circuit malfunctions, a power outage is likely. When that happens, you can recover quickly if you own a reliable home backup generator. Once your generator is installed, you’ll need reliable technicians available 24/7 and capable of providing quick services. Generator Supercenter of New Hampshire provides experienced technicians for generator installation, repair, and maintenance. Benefits of working with our team: Full-service – Whether you need a new generator, or your current one is malfunctioning, we won’t leave until your generator is up and running as it should be. Convenience – If something goes wrong with your generator, you don’t have to worry about going out to buy a new one or to replace parts. We will come to your home or business and take care of it for you. Free on-site estimate – When you call us, you’re not committed to a service—our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached! Unfortunately we do not do anything with portable generators or any brands not manufactured by Generac. We are also not a parts distributor.

"Matt Sanford and the team at Generator Supercenter were professional, knowledgeable and efficient when surveying my property. They spent quality time educating me on their generator product line and monitoring services. If you're looking for a superior product, company, and team to support you throughout our long New England winters, look no further!"

Chad F on March 2022

At Generator Supercenter, we are committed to securing your home and peace of mind with back up power solutions. When bad weather hits or an electrical circuit malfunctions, a power outage is likely. When that happens, you can recover quickly if you own a reliable home backup generator. Once your generator is installed, you’ll need reliable technicians available 24/7 and capable of providing quick services. Generator Supercenter of New Hampshire provides experienced technicians for generator installation, repair, and maintenance. Benefits of working with our team: Full-service – Whether you need a new generator, or your current one is malfunctioning, we won’t leave until your generator is up and running as it should be. Convenience – If something goes wrong with your generator, you don’t have to worry about going out to buy a new one or to replace parts. We will come to your home or business and take care of it for you. Free on-site estimate – When you call us, you’re not committed to a service—our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached! Unfortunately we do not do anything with portable generators or any brands not manufactured by Generac. We are also not a parts distributor.

"Matt Sanford and the team at Generator Supercenter were professional, knowledgeable and efficient when surveying my property. They spent quality time educating me on their generator product line and monitoring services. If you're looking for a superior product, company, and team to support you throughout our long New England winters, look no further!"

Chad F on March 2022


Avatar for Callahan Electric
Callahan Electric
76 Old Marsh Hill Road
5.00(
5
)
Approved Pro
Callahan Electric
76 Old Marsh Hill Road
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
56 local quotes requested

New construction/ Remodels Kitchen and Bathrooms Pools and Spas Heating and cooling systems Whole House and Portable Generators Service upgrades and Panels changes Solar and Battery Systems EV Car Chargers

"Jerry was very communicative and explained everything very clearly. He arrived on time, completed the work quickly, and was affordable. Overall we are very happy with his service!"

Abbygail Z on January 2025

New construction/ Remodels Kitchen and Bathrooms Pools and Spas Heating and cooling systems Whole House and Portable Generators Service upgrades and Panels changes Solar and Battery Systems EV Car Chargers

"Jerry was very communicative and explained everything very clearly. He arrived on time, completed the work quickly, and was affordable. Overall we are very happy with his service!"

Abbygail Z on January 2025


Basic Electric LLC
50 LAUREL PINES DR
5.00(
3
)
Approved Pro
Basic Electric LLC
50 LAUREL PINES DR
5.00(
3
)
Approved Pro
Customers say: Quick response
11 local quotes requested
2 years of experience

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Very good work and reasonable price. He's a nice person ."

Alex K on March 2025

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Very good work and reasonable price. He's a nice person ."

Alex K on March 2025


Downeast Electrical Services
4 Scamman St 19-342
5.00(
3
)
Approved Pro
Downeast Electrical Services
4 Scamman St 19-342
5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

We provide electrical solutions for residential and commercial properties across Southern Maine. Our team of Master Electricians are fully licensed and insured. We service the greater Portland and Southern Maine, such as Kennebunk, Wells, Saco, Biddeford, Scarborough and more. Our goal is to provide not only technical expertise, but responsive, experienced customer service. Our professionals are all fully licensed and experienced in maintenance, installation, and repair services. We appreciate our clients and are dedicated to using our knowledge of electrical work, planning, and customer service to complete each project successfully and on schedule. We are prepared to diagnose any electrical problem you’re facing and resolve it. We offer electrical contracting, wiring, installation, service upgrades, fixture installation, and more. Our specialties include ductless mini splits / heat pump installation (we are an official MRCOOL partner), EV charger installation, and much more.

"We bought an old house that needed some upgrades and Downeast was great from start to finish. I wanted some minisplits put in for better heating and ac, and they gave me different options that kept my budget and what I wanted in mind. They also did my service upgrade and were completely professional through the whole process. I ended up with some MRCOOL units that worked really well this winter. They've been great to work with."

Elizabeth L on March 2024

We provide electrical solutions for residential and commercial properties across Southern Maine. Our team of Master Electricians are fully licensed and insured. We service the greater Portland and Southern Maine, such as Kennebunk, Wells, Saco, Biddeford, Scarborough and more. Our goal is to provide not only technical expertise, but responsive, experienced customer service. Our professionals are all fully licensed and experienced in maintenance, installation, and repair services. We appreciate our clients and are dedicated to using our knowledge of electrical work, planning, and customer service to complete each project successfully and on schedule. We are prepared to diagnose any electrical problem you’re facing and resolve it. We offer electrical contracting, wiring, installation, service upgrades, fixture installation, and more. Our specialties include ductless mini splits / heat pump installation (we are an official MRCOOL partner), EV charger installation, and much more.

"We bought an old house that needed some upgrades and Downeast was great from start to finish. I wanted some minisplits put in for better heating and ac, and they gave me different options that kept my budget and what I wanted in mind. They also did my service upgrade and were completely professional through the whole process. I ended up with some MRCOOL units that worked really well this winter. They've been great to work with."

Elizabeth L on March 2024


Avatar for Sellick Electric
Sellick Electric
35 Sunrise St
5.00(
1
)
Approved Pro
Sellick Electric
35 Sunrise St
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
28 years of experience

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"Sellick Electric is top notch! Chuck did an amazing job on the electrical service upgrade. He is meticulous about his work and really cares about the customer. He is reliable and honest. The quote I was provided is exactly what he said it would be with no surprises at the completion of the work. I can't wait to recommend him to my friends."

John H on November 2023

I pride myself on my professionalism, as well as my ability to complete every job to the homeowner's total satisfaction. I never leave a job unfinished, or a homeowner not 100% satisfied with my level of service - Call today!

"Sellick Electric is top notch! Chuck did an amazing job on the electrical service upgrade. He is meticulous about his work and really cares about the customer. He is reliable and honest. The quote I was provided is exactly what he said it would be with no surprises at the completion of the work. I can't wait to recommend him to my friends."

John H on November 2023


Avenergy Electric
498 Windsor Road
4.76(
25
)
Approved Pro
Avenergy Electric
498 Windsor Road
4.76(
25
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
16 years of experience

With several years experience Avenergy Electric, works hard to bring each customer the best possible service and quality available. We background check, and pre-screen everybody we bring on board. We look forward to working with you on your next project. We welcome your questions, and thank you for your business!

"Great experience"

Paul P on June 2022

With several years experience Avenergy Electric, works hard to bring each customer the best possible service and quality available. We background check, and pre-screen everybody we bring on board. We look forward to working with you on your next project. We welcome your questions, and thank you for your business!

"Great experience"

Paul P on June 2022


Avatar for IGM Electric
IGM Electric
131 New County Road
4.87(
27
)
Approved Pro
IGM Electric
131 New County Road
4.87(
27
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
8 years of experience

To schedule a free Estimate call (207)423-8021 IGM Electric is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. Consistent high quality work. We look to work for the homeowner themselves. When you love what you do you never work a day in your life.

"The did a great job, on time, budget and professional. Will definitely use them again"

Richard H on July 2024

To schedule a free Estimate call (207)423-8021 IGM Electric is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. Consistent high quality work. We look to work for the homeowner themselves. When you love what you do you never work a day in your life.

"The did a great job, on time, budget and professional. Will definitely use them again"

Richard H on July 2024


Avatar for Northeast Electric
Northeast Electric
41 Evergreen Drive
4.40(
10
)
Approved Pro
Northeast Electric
41 Evergreen Drive
4.40(
10
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
17 years of experience

Company is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

"Great bunch of guys. We're halfway done and they've been great."

William S on March 2023

Company is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business

"Great bunch of guys. We're halfway done and they've been great."

William S on March 2023


Cam's Electrical Services
120 Baxter Boulevard
4.56(
16
)
Approved Pro
Cam's Electrical Services
120 Baxter Boulevard
4.56(
16
)
Approved Pro
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
14 years of experience

Cam's Electrical Services, has been providing quality work to homeowners in the Portland, ME area. We offer competitive prices, making sure our customers come first. We specialize in panel upgrades, new homes and additions electrical installations, bathroom remodels and more. We make sure our crew shows up on time, dependable and do the job right the first time. We know your time matters, so schedule an appointment and allow us to take care of the rest!

"Difficult to contact."

Lee T on January 2021

Cam's Electrical Services, has been providing quality work to homeowners in the Portland, ME area. We offer competitive prices, making sure our customers come first. We specialize in panel upgrades, new homes and additions electrical installations, bathroom remodels and more. We make sure our crew shows up on time, dependable and do the job right the first time. We know your time matters, so schedule an appointment and allow us to take care of the rest!

"Difficult to contact."

Lee T on January 2021


Avatar for Beacon Electric, LLC
Beacon Electric, LLC
418 Shaker Rd
4.93(
7
)
Approved Pro
Beacon Electric, LLC
418 Shaker Rd
4.93(
7
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

Beacon Electric, LLC, offers fast, friendly, and courteous service. We use only the best products and are always eager to answer your questions and concerns. We have built our reputation on our commitment to providing quality service, which has earned us an impressive reputation with many valuable customers. We take pride in delivering value through top quality, dependable work with excellent price and reliable, honest service.

"Kevin was great to work with. He was flexible with our schedule. The work was excellent and he stayed on top of the project all the way through the power company activating the service."

Wayne P on November 2019

Beacon Electric, LLC, offers fast, friendly, and courteous service. We use only the best products and are always eager to answer your questions and concerns. We have built our reputation on our commitment to providing quality service, which has earned us an impressive reputation with many valuable customers. We take pride in delivering value through top quality, dependable work with excellent price and reliable, honest service.

"Kevin was great to work with. He was flexible with our schedule. The work was excellent and he stayed on top of the project all the way through the power company activating the service."

Wayne P on November 2019

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Generator installations FAQs

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 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.

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