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Verified Reviews for Generator Install pros in Madison, MO

*The Angi rating for Generator Install companies in Madison, MO 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 Madison, MO 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 March 01, 2026

Find Generator install pros in Madison

Avatar for Donohue's Lightning Rods
Donohue's Lightning Rods
4.3(
70
)

Serving Madison, MO and surrounding areas

Approved

In business since 1971

Free estimates

Emergency services offered

"Jim for Donhohues Lightning Rods installed the lightning rod system in my home. When the work was done I was very happy as their installer came as per promised time, and perform the work. Before giving them the work Jim completely sold me their work ethics, quality, and service. There was a minor issue and his team took complete ownership of this issue and talked to me in detail. They provide a very good explanation to satisfy me. I am a happy customer."
Jobs from the last 3 year
Jobs from the last 3 year
Lightning protection
Lightning protection
Lightning protection

+10

Response time1 day
74 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for Solarize
Solarize
5.0(
10
)

Serving Madison, MO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Needed a sub panel and my entire garage wired(7 120 outlets, 2 240 outlets, and a floodlight put in). They showed up gave a quick run threw and they knocked it out Whole process was quick and easy. Great work at a great price! Would definitely recommend!"
137 neighbors recently requested a quote
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Avatar for Mr Electric of Central Missouri
Mr Electric of Central Missouri
4.2(
66
)

Serving Madison, MO and surrounding areas

Approved

In business since 2009

Emergency services offered

Credit card accepted

"Very professional and friendly, installed new ceiling lights in the dinning room and cleaned the mess after he was finished. Will use Mr. Electric for my next electrical job. Christian Mast of Nixa, MO"
Light projects
Light projects
Light projects
Light projects
Light projects

+2

Response time2 days
110 neighbors recently requested a quote
Recommended by89%of homeowners
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Avatar for Poston Handyman & Remodels
Poston Handyman & Remodels
4.9(
13
)

Serving Madison, MO and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I needed help with a minisplit install, and David was on top of it. He had all the required tools, and was a huge help in getting it installed and ready for the electrician. A+"
Misc
Misc
Misc
Misc
Misc

+36

37 neighbors recently requested a quote
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Avatar for Wortmann Agri-Services
Wortmann Agri-Services
New to Angi

Serving Madison, MO and surrounding areas

Approved

In business since 2023

Free estimates

Wortmann Agri-services is your number one choice for all your electrical needs. Our commitment to quality is second to none, and we guarantee your complete satisfaction. We enjoy creating long term relationships with each of our clients, and we look forward to working with you!

2 neighbors recently requested a quote
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Avatar for Choice Home Warranty
Choice Home Warranty
4.0(
5,676
)

Serving Madison, MO and surrounding areas

In business since 2008

Emergency services offered

Credit card accepted

"They were informative! It's a family business that is generational in their craft. They explained my unit to me and gave me tips to improve it's care. I will be using them in the future for maintenance."
Recommended by82%of homeowners
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Avatar for AIO Integrations LLC
AIO Integrations LLC
4.6(
18
)

Serving Madison, MO and surrounding areas

In business since 2020

Emergency services offered

Credit card accepted

AIO provides computer support services for all PC platforms including Apple OSX/iOS, Microsoft Windows, and Google Android devices. \n\nWe are the only company on Angi.com with a BBB A+ rating providing nation-wide IT support on-site/remote services from over 1500 locations. You can call us directly at 832-402-1335, option 1 for sales, to be connected to a sales engineer if you need immediate help. You can also visit our website at https://aiosupport.net. We look forward to helping you!

Helping a Victim who was being Cyber-stocked
WIndows Update Broken
Computer Tune-up
Additional Photos
Recommended by91%of homeowners
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Avatar for Dutch Garden Nursery
Dutch Garden Nursery
4.6(
7
)

Serving Madison, MO and surrounding areas

In business since 2005

Free estimates

Credit card accepted

"Courteous and professional. Very patient and helpful. Hard working and efficient. They also did landscaping. A suggestion would be to advise customer on care by supplying an email regarding watering and fertllizer frequency and type."
landscape overhaul
landscape overhaul
landscape overhaul
landscape overhaul
landscape overhaul

+19

Response time4 days
Recommended by100%of homeowners
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Showing 1-10 of 41
Generator Install questions, answered by experts

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

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.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

The Madison, MO 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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