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Verified Reviews for Generator Install pros in Rochester, MN

*The Angi rating for Generator Install companies in Rochester, MN 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 Rochester, MN 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 June 13, 2025

Find Generator install pros in Rochester

Capelle's Electric, LLC
4.7(
49
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Rochester, MN and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: Quality work

"Capelle Electric installed 3 ceiling fans/light fixtures for us. They are easy to work with, answered all questions we had, and finished the job in a timely manner. They cleaned up after themselves so I didnâ t have to. Keith Capelle and his partner were professional in every way. I would not hesitate to hire them again or recommend them to others."
Response time1 day
4 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for Kruger Electric
Kruger Electric
5.0(
13
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Rochester, MN and surrounding areas

Approved

In business since 2006

Emergency services offered

Warranties offered

"Awesome and friendly staff and great service! You can depend on Krueger Electric to do a great job on any of electrical needs."
4 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Hero Plumbing, Heating Cooling and Electrical
Hero Plumbing, Heating Cooling and Electrical
4.3(
805
)
Fixed Generator - InstallPortable Generator - Install

Serving Rochester, MN and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"They installed our furnace 3 years ago and came out for a complimentary tune-up. The technician was friendly and knowledgeable. Great experience all around."
Team Meeting
Working Hard
Hug a Hero
Here to help
Hero Coming Soon

+9

Response time11 hrs
66 neighbors recently requested a quote
Recommended by89%of homeowners
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Redemption Electric, LLC
5.0(
4
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Rochester, MN and surrounding areas

In business since 2022

Free estimates

Credit card accepted

"They did an excellent job installing a new 240V outlet in my garage! We were able to easily schedule an appointment. They arrived to my house on time. As they were working they were extremely friendly and communicated proficiently. Once the project was finished everything looked great and the outlet works just fine. I would highly recommend for anyone needing a local electrician."
Response time2 days
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 Rochester, MN 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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QualityFast
New to Angi
Portable Generator - InstallPortable Generator - Repair

Serving Rochester, MN and surrounding areas

In business since 2022

Free estimates

Emergency services offered

QualityFast is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

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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.

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

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.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

The Rochester, MN 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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