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

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I cannot say enough great things about Jamie and the team at Wisconsin Generators LLC. From the very first conversation, Jamie was professional, knowledgeable, and incredibly responsive. He took the time to walk me through all my options, answered every question thoroughly, and made sure I felt confident in the decision we were making. The installation process was seamless. The crew showed up on time, worked efficiently, and treated our property with respect. Their attention to detail and commitment to doing the job right was obvious from start to finish. Everything was clean, organized, and completed exactly as promised. What really sets Jamie apart is his integrity and customer-first approach. There was no pressure just honest recommendations and clear communication. If you’re considering a standby generator, I highly recommend Jamie and Wisconsin Generators LLC. Reliable service, expert installation, and true peace of mind. Five stars all The way!!"
Whole house back up
Installation Trailer
New propane generator
Partial home backup
Partial home backup

+1

24 neighbors recently requested a quote
Avatar for Cardinal Heating & Air Conditioning
Cardinal Heating & Air Conditioning
4.8(
165
)
Fixed Generator - InstallFixed Generator - Repair

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"I purchased a new HVAC system from Cardinal. Everything about the job went as planned, in the amount of time we were promised. The installers were professional and cleaned up the work space very well when they were finished. I would use Cardinal again without hesitation."
Cardinal Heating Air
Cardinal Heating Air
Cardinal Heating Air
Cardinal Heating Air
Cardinal Heating Air

+14

130 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for PRECISION POWER & ELECTRIC LLC
PRECISION POWER & ELECTRIC LLC
5.0(
10
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 2024

Free estimates

Warranties offered

"Did a great job on fixing my outside electrical issue of the circuit that kept tripping. Fixed so both outside outlets did not trip at same time. Unable to hardwire my security doorbell/camera where I wanted due to house being over 100 yrs old. He did however did offer some alternatives but not what I wanted. Overall really satisfied with the job he did & explaining what needed to be done"
Added cabinet lighting
Added cabinet lighting
Added cabinet lighting
Commercial work
Commercial work

+8

Response time4 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for All Comfort Services
All Comfort Services
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Sun Prairie, WI and surrounding areas

Approved

In business since 1973

Free estimates

Emergency services offered

All Comfort Services is a 50+ year old employee-owned heating, cooling, plumbing, and electrical contractor serving residential and commercial customers in Dane and parts of Rock, Columbia, and Jefferson counties. We may need to confirm a specific zip code that we service. Our team understands that when you call a local electrician, you need a trained, certified, and insured professional who will arrive on time and be ready to provide the solutions you need. Our repair dispatch fee is $149.

Generator
Generator
Panel Installation
Service Upgrade
1 neighbors recently requested a quote
Avatar for Ls industrial repair
Ls industrial repair
5.0(
2
)
Portable Generator - Repair

Serving Sun Prairie, WI and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"He showed up in a timely manner. He did the job quickly. There was a shorted wire that he had to re-run and pull through the existing pipe. So far it's all working great and has not needed to return. So far everything working great."
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Generator Install questions, answered by experts

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.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

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.

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

The Sun Prairie, WI homeowners’ guide to generator installs

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