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Verified Reviews for Generator Install pros in Onalaska, WI

*The Angi rating for Generator Install companies in Onalaska, WI 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 Onalaska, WI 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 November 06, 2025

Find Generator install pros in Onalaska

Avatar for Wisconsin Generators LLC
Wisconsin Generators LLC
5.0(
9
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Onalaska, WI and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Very prompt and professional, installation was in a timely manner. Very helpful with any questions and explanations. After job was complete. Highly recommended."
Whole house back up
Installation Trailer
New propane generator
Partial home backup
Partial home backup

+1

28 neighbors recently requested a quote
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Avatar for Oak Ridge Electric, LLC
Oak Ridge Electric, LLC
4.9(
19
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Onalaska, WI and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"Excellent communication throughout estimate and appointment."
Solar
Solar Projects
Solar
Solar
Tesla Battery System-solar

+3

Response time1 day
Recommended by100%of homeowners
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Avatar for Sparks Electric, LLC
Sparks Electric, LLC
4.8(
12
)
Portable Generator - Install

Serving Onalaska, WI and surrounding areas

In business since 2015

Free estimates

Credit card accepted

"Blake Sparks is very professional, listens well, polite, and overall, he's a very nice guy. I'll be calling on him in the future when I start my kitchen remodel. My project was installing outlets in my bathroom. I also had a bad hanging pull chain light in the basement. Thank you!"
Sub panel installation
Response time2 days
Response rate95%
Recommended by100%of homeowners
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Rentas Electric LLC
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Onalaska, WI and surrounding areas

In business since 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs.\nIt is our mission to provide excellent customer service from start to completion of a project.\nTo understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner.\nOur reputation is based on service, safety and quality, regardless of how large or small the job.\n

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PSC & D
0.5(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Onalaska, WI and surrounding areas

In business since 1990

Free estimates

My company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Response time1 day
Response rate91%
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Generator Install questions, answered by experts

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

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 usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

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.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

The Onalaska, WI 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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