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Verified Reviews for Generator Install pros in Madison, SD

*The Angi rating for Generator Install companies in Madison, SD 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, SD 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 July 21, 2026

Find Generator install pros in Madison

Avatar for Eie Electric
Eie Electric
4.5(
17
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Madison, SD and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"Price of running new wire and installing 2 ceiling fans was fair and reasonable. Customer service and quality of work awesome. My wife states that Jason Eie was very professional and respectful. I will contact him in the future for other projects as needed."
Gas Station Setup
Gas Station Setup
Gas Station Setup
Gas Station Setup
Gas Station Setup

+35

Response time2 hrs
Recommended by93%of homeowners
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Avatar for Triple H Electric LLC
Triple H Electric LLC
5.0(
11
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Madison, SD and surrounding areas

In business since 2025

Emergency services offered

Warranties offered

"Chris showed up on time and had my furnace and an additional garage heater wired up correctly and working almost immediately. Fast friendly service that you could trust. Would recommend and use his service again"
Service up grade
Service up grade
Service up grade
Service up grade
Service up grade

+8

1 neighbors recently requested a quote
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Avatar for North Plains Electric
North Plains Electric
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Madison, SD and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"Great to work with, extremely efficient and always there when we have needed them last minute. Can't say enough good things about them!"
Response time4 hrs
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Avatar for TT Electric, LLC
TT Electric, LLC
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Madison, SD and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"He was easy to work with, good at listening what we wanted and open to changes."
Response time10 mins
9 neighbors recently requested a quote
Recommended by100%of homeowners
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D & J Electric, Inc.
New to Angi
Fixed Generator - InstallFixed Generator - Repair

Serving Madison, SD and surrounding areas

In business since 1980

Free estimates

We offer over 35 years of experience in the electrical industry. We take on a wide range of electrical projects, to include, full installation for additions and remodels, as well as, generator installs, wiring and panel upgrades, and a variety of other jobs. We take pride in our quality of work and our commitment to outstanding results. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction. No job is too small. We will help you find your short!

Response time12 hrs
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Trinity Electric LLC
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Madison, SD and surrounding areas

In business since 2012

Free estimates

Credit card accepted

Welcome to Trinity Electric! With over 18 years of experience, we take pride in the quality of work and customer satisfaction that we give every customer! We are known to be extremely hands on and involved, while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

Response time3 hrs
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Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

The Madison, SD 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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