Top-rated generator installers.

Get matched with top generator installers in Spencerville, MD

There are 15 highly-rated local generator installers.

Matching on Angi

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Generator installers in Spencerville

Avatar for Beacon Home Services
Beacon Home Services
10498 Colonel Ct
4.71(
1,013
)
Approved Pro
Beacon Home Services
10498 Colonel Ct
4.71(
1,013
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
649 local quotes requested

When you have an electrical or plumbing issue, you want it solved quickly for the safety and comfort of you and your family. Our technicians genuinely care about our customers, which is one of the reasons why we have been a trusted electrical and plumbing services company in the area for the past 20+ years. Our technicians have well stocked trucks and are able to do most repairs the same day. We offer 5-star service, same-day services, upfront pricing, as well as various financing options. Our technicians are highly trained and confident in their skills and ability to handle any electrical and plumbing issue in your home and stand behind all our recommended repairs.

"Very good service"

Ed W on October 2024

When you have an electrical or plumbing issue, you want it solved quickly for the safety and comfort of you and your family. Our technicians genuinely care about our customers, which is one of the reasons why we have been a trusted electrical and plumbing services company in the area for the past 20+ years. Our technicians have well stocked trucks and are able to do most repairs the same day. We offer 5-star service, same-day services, upfront pricing, as well as various financing options. Our technicians are highly trained and confident in their skills and ability to handle any electrical and plumbing issue in your home and stand behind all our recommended repairs.

"Very good service"

Ed W on October 2024


Avatar for GAC Services
GAC Services
227 E Deer Park Dr
4.80(
279
)
Approved Pro
GAC Services
227 E Deer Park Dr
4.80(
279
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
756 local quotes requested

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak K on February 2025

GAC Services is a residential cooling, heating, and electrical contractor setting new standards in the Maryland HVAC and electric market. Since 1970, we’ve developed a strong reputation for providing the Montgomery County and Frederick County areas with reliable cooling and heating services. In 2014, we expanded our service offerings to include electrical services—allowing us to offer our customers the same great service in a new area of business. Additional DBA: Gaithersburg Heating & Cooling

"Highly professional, knowledgeable and well behaved technician. Prices offered were good too. I definitely recommend the company."

Deepak K on February 2025


Green's Electric
13671 Baltimore Ave,
5.00(
10
)
Approved Pro
Green's Electric
13671 Baltimore Ave,
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
204 local quotes requested

Electrical Service & Repairs - We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"Outstanding! Super professional. Offered advice on my electrical installation and did the work quickly. I was very pleased with the end installation."

Chris C on January 2025

Electrical Service & Repairs - We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call or click to schedule an estimate today!

"Outstanding! Super professional. Offered advice on my electrical installation and did the work quickly. I was very pleased with the end installation."

Chris C on January 2025


Avatar for Kolb Electric Inc
Kolb Electric Inc
8530 Cinder Bed Rd
4.22(
216
)
Approved Pro
Kolb Electric Inc
8530 Cinder Bed Rd
4.22(
216
)
Approved Pro
Customers say: Super punctual
198 local quotes requested
100 years of experience

We are a family owned and operated business that has been serving the Baltimore, Washington Metropolitan area since 1925. We are committed to providing superior electrical services. The valuable advantages we can offer you are great service, high quality and experienced workers at a competitive price.

"Do not use this company. They will rip you off. The contract was for eight 300W LED 40 ft pole lights, but I caught them redhanded installing 240W. Who does that? Then, they broke my lock and broke into my sprinkler room which I saw on my video which they admitted. Then, Kolb sued me for not paying the bill which I disputed due to lost tools as result of the break-in. Who does that breaking into a customer's sprinkler room and not informing that they did. I had to catch them on my video. Not only that it took over one year to the work proposed work. TOTAL FRAUD. I will be going to court...."

John A on November 2023

We are a family owned and operated business that has been serving the Baltimore, Washington Metropolitan area since 1925. We are committed to providing superior electrical services. The valuable advantages we can offer you are great service, high quality and experienced workers at a competitive price.

"Do not use this company. They will rip you off. The contract was for eight 300W LED 40 ft pole lights, but I caught them redhanded installing 240W. Who does that? Then, they broke my lock and broke into my sprinkler room which I saw on my video which they admitted. Then, Kolb sued me for not paying the bill which I disputed due to lost tools as result of the break-in. Who does that breaking into a customer's sprinkler room and not informing that they did. I had to catch them on my video. Not only that it took over one year to the work proposed work. TOTAL FRAUD. I will be going to court...."

John A on November 2023


Avatar for Lou's Electrical Contractor & Installation LLC
Lou's Electrical Contractor & Installation LLC
10825 Badger Drive
3.87(
104
)
Approved Pro
Lou's Electrical Contractor & Installation LLC
10825 Badger Drive
3.87(
104
)
Approved Pro
Customers say: Quality work
40 local quotes requested
19 years of experience

I establish the company in 2006, I been providing electrical service to residential and commercial facilities, I am looking forward to providing any electrical service to the community for years to come, we have over 14 years' experience in electrical services.

"Fast and Completed what we needed & will call him back for more!😊👍"

Curtis G on March 2025

I establish the company in 2006, I been providing electrical service to residential and commercial facilities, I am looking forward to providing any electrical service to the community for years to come, we have over 14 years' experience in electrical services.

"Fast and Completed what we needed & will call him back for more!😊👍"

Curtis G on March 2025


Avatar for S & S Electric LLC
S & S Electric LLC
1111 Cornell Ln
4.80(
117
)
Approved Pro
S & S Electric LLC
1111 Cornell Ln
4.80(
117
)
Approved Pro
Customers say: Quality work
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
111 local quotes requested

2-3 Employees. No subs. Cost is flat rate and hourly. S&S Electric, offers a wide variety of services that are designed to accommodate all your specific electrical projects. We are dedicated to meeting your needs effectively, professionally and affordably. We offer a level of expertise you're not likely to find elsewhere. We are licensed and insured for your protection. You can count on S&S Electric to provide the absolute best electrical repairs and installation services. We will be more than happy to provide you with a phone estimate for your small projects and a writen estimate for your larger ones. You can rely on us for a quick responce 24 hours a day, 7 days a week and 365 days each year to complete your electrical projects. When you are ready to start your next electrical project S&S Electric will be here ready to leave you impressed, your home clean and a quality job to be proud of. We want to be the only electrical company you'll want to hire. So no mater how big or small your electrical project is we have an electrician that is here to help.

"Great job!"

Brian B on March 2025

2-3 Employees. No subs. Cost is flat rate and hourly. S&S Electric, offers a wide variety of services that are designed to accommodate all your specific electrical projects. We are dedicated to meeting your needs effectively, professionally and affordably. We offer a level of expertise you're not likely to find elsewhere. We are licensed and insured for your protection. You can count on S&S Electric to provide the absolute best electrical repairs and installation services. We will be more than happy to provide you with a phone estimate for your small projects and a writen estimate for your larger ones. You can rely on us for a quick responce 24 hours a day, 7 days a week and 365 days each year to complete your electrical projects. When you are ready to start your next electrical project S&S Electric will be here ready to leave you impressed, your home clean and a quality job to be proud of. We want to be the only electrical company you'll want to hire. So no mater how big or small your electrical project is we have an electrician that is here to help.

"Great job!"

Brian B on March 2025


Avatar for Bentz Electric
Bentz Electric
6605 Gude Avenue
4.43(
369
)
Approved Pro
Bentz Electric
6605 Gude Avenue
4.43(
369
)
Approved Pro
Customers say: Quality work
60 local quotes requested
14 years of experience

Bentz Electric, has over 24 years of expertise. When it comes to electrical services know that our professionals have you covered. We take pride in the superior service that we provide to you, and we look forward to helping with all of your electrical needs. Call today for your consultation with our expert.

"Smooth, fast, fair price, professional. Nice people."

David A on October 2023

Bentz Electric, has over 24 years of expertise. When it comes to electrical services know that our professionals have you covered. We take pride in the superior service that we provide to you, and we look forward to helping with all of your electrical needs. Call today for your consultation with our expert.

"Smooth, fast, fair price, professional. Nice people."

David A on October 2023


Avatar for J A Electric LLC.
J A Electric LLC.
4.78(
27
)
Approved Pro
J A Electric LLC.
4.78(
27
)
Approved Pro
Customers say: Super punctual
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
91 local quotes requested

10 Years Of Experience. Provides Exceptional & Guaranteed Residential Work. Put Clients Needs First Before Anything. www.jaelectricllc.net

"Arrived early and assessed the issue quickly. It was fixed within the day."

Erin J on March 2025

10 Years Of Experience. Provides Exceptional & Guaranteed Residential Work. Put Clients Needs First Before Anything. www.jaelectricllc.net

"Arrived early and assessed the issue quickly. It was fixed within the day."

Erin J on March 2025


Avatar for Absolute Electrical Contractors LLC
Absolute Electrical Contractors LLC
300 Hibiscus Street
4.56(
163
)
Approved Pro
Absolute Electrical Contractors LLC
300 Hibiscus Street
4.56(
163
)
Approved Pro
Customers say: Super punctual
44 local quotes requested
34 years of experience

Our electricians are always Prompt, Courteous, Respectful of your home. More than 20 years in Montgomery County. We cover the whole DC area. Accredited Better Business Bureau Member Absolutely no hidden fees licensed & insured in MD, DC, & VA. Let us help you go green & save yourself some green $s. Eco-friendly solutions, home remodeling/renovations, new home installations, upgrading of service, upgrade fuse box to breaker box, troubleshooting & repairs, home inspections. We design, install, & repair: outdoor/landscape lighting, security lighting & systems, communications systems/telephones & systems wiring, data (internet) wiring, cable and fios tv wiring, recessed & track lighting, ceiling fans, attic exhaust fans, light fixture & dimmers, plugs & switches, emergency generators, appliances. better business bureau certified member. Many people believe that their car is the largest single source of air pollution for which they are personally responsible. But in fact, the average home causes the emission of more than twice as much carbon dioxide--the principal greenhouse gas--as the average car. This is because most of the energy consumed in our homes is produced by burning fossil fuels like coal, oil, and natural gas. This pollution is actually a hidden cost for the energy We use, over and above the dizzying $110 billion Americans spend each year on their home energy bills that's nearly $1,300 per house. Much of this energy use is unnecessary because there are a variety of proven, widely available products on the market today (heating, cooling, appliances, windows, lighting, etc.) to drastically reduce your home's energy bills, and accompanying pollution. What's more, many of these products actually improve the comfort and livability of your home.

"Did not get a call"

Ian S on August 2020

Our electricians are always Prompt, Courteous, Respectful of your home. More than 20 years in Montgomery County. We cover the whole DC area. Accredited Better Business Bureau Member Absolutely no hidden fees licensed & insured in MD, DC, & VA. Let us help you go green & save yourself some green $s. Eco-friendly solutions, home remodeling/renovations, new home installations, upgrading of service, upgrade fuse box to breaker box, troubleshooting & repairs, home inspections. We design, install, & repair: outdoor/landscape lighting, security lighting & systems, communications systems/telephones & systems wiring, data (internet) wiring, cable and fios tv wiring, recessed & track lighting, ceiling fans, attic exhaust fans, light fixture & dimmers, plugs & switches, emergency generators, appliances. better business bureau certified member. Many people believe that their car is the largest single source of air pollution for which they are personally responsible. But in fact, the average home causes the emission of more than twice as much carbon dioxide--the principal greenhouse gas--as the average car. This is because most of the energy consumed in our homes is produced by burning fossil fuels like coal, oil, and natural gas. This pollution is actually a hidden cost for the energy We use, over and above the dizzying $110 billion Americans spend each year on their home energy bills that's nearly $1,300 per house. Much of this energy use is unnecessary because there are a variety of proven, widely available products on the market today (heating, cooling, appliances, windows, lighting, etc.) to drastically reduce your home's energy bills, and accompanying pollution. What's more, many of these products actually improve the comfort and livability of your home.

"Did not get a call"

Ian S on August 2020


Avatar for Vital Electric
Vital Electric
7102 Columbia Park Road
5.00(
18
)
Approved Pro
Vital Electric
7102 Columbia Park Road
5.00(
18
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
36 local quotes requested

We are a Union trained company, with a Licensed and insured Journeyman Electrician. We have experience since 2014. We are able to troubleshoot and resolve any electrical issues. We specialize in Heavy ups, Generators, New installs, EV chargers, and many more projects. Customer satisfaction tops our priority list. We are Minority owned. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"Excellent job . Ludwing arrived on time and worked for 6 hours to complete the installation. He went beyond to solve some part issues . I would highly recommend him ."

Rene H on March 2025

We are a Union trained company, with a Licensed and insured Journeyman Electrician. We have experience since 2014. We are able to troubleshoot and resolve any electrical issues. We specialize in Heavy ups, Generators, New installs, EV chargers, and many more projects. Customer satisfaction tops our priority list. We are Minority owned. Read more below on all the services we offer and contact us with any questions or to schedule a free estimate today!

"Excellent job . Ludwing arrived on time and worked for 6 hours to complete the installation. He went beyond to solve some part issues . I would highly recommend him ."

Rene H on March 2025

...
Showing 1-10 of 162

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.
A portable inverter generator
Mar 3, 2025
Mar 3, 2025
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Boy and girl jumping on the couch sofa
Apr 1, 2025
Apr 1, 2025
A whole house generator can keep your home running during a power outage, but can it handle the energy demands of an air conditioner? Here’s what to consider.
A natural gas generator outside a house
Apr 1, 2025
Apr 1, 2025
Natural gas generators emit carbon monoxide, a harmful gas. Learn about what carbon monoxide is and tips to operate your generator safely.
A house generator in the backyard of a house
Apr 1, 2025
Apr 1, 2025
Is a whole-house generator worth it? Discover the key factors influencing ROI and whether it's the right choice for your home.
outdoor diesel power generator
Apr 1, 2025
Apr 1, 2025
Diesel remains a popular fuel option for a variety of home generators, but you will need to plan your maintenance carefully. Here’s how it works.
emergency power supply outside home
Apr 4, 2025
Apr 4, 2025
How much does it cost to run a standby generator? The answer varies based on the type and size of the generator. Find out more.