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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon29
    Verified generator installs reviews

Top-Rated Generator install pros in Rochester - Updated Nov 2026

Avatar for Mr. Electric
Mr. Electric
4.5(
42
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Rochester, MI and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Very happy with my experience with Mr. Electric. I have used them to put in my whole house generator. They were great. Sam Stone is awesome. He showed up on time and upgraded our panel box. I found him to be very professional and knowledgeable. I would highly recommend this company and Sam Stone for all electrical services"
Response time8 hrs
12 neighbors recently requested a quote
Recommended by80%of homeowners
St. John Electric
4.9(
69
)
Fixed Generator - InstallPortable Generator - Install

Serving Rochester, MI and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

"I would give Kevin and St. John Electric 10 stars if I could. He put in a fairly challenging outlet for me and also a second outlet for a freezer in the basement and did an excellent job. Very reasonable pricing. I will definitely be calling him in the future for a generator installation. I recommend him highly and without reservations."
Response time1 day
3 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Electrician Near Me LLC
Electrician Near Me LLC
5.0(
15
)
Generator - Install - For Business

Serving Rochester, MI and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

"Andrew did an excellent job replacing my electrical panel. He was professional, knowledgeable, and took the time to explain everything clearly. The work was completed efficiently, and everything looks great. I'm very satisfied with the quality of the installation and would definitely recommend Andrew to anyone needing electrical work."
Service panels
Wholehouse Generator
New Panel
New construction
7 neighbors recently requested a quote
Avatar for Lighthouse Electrical Service
Lighthouse Electrical Service
4.6(
107
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Rochester, MI and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

"We hired Lighthouse Electrical to install a generator interlock kit for our house and am very impressed at how smooth everything went. They were the cheapest out of 5 quotes, but didn't cut any corners. Corey came out on site for a quote which added comfort that he won't try to extra bill us once the work was to be done, and we got the install scheduled within a week from calling. Christian came out to do the install and once everything was complete he vacuumed up and walked me through how to use the switch. As a cherry on top, they didn't add a surcharge for paying by credit. I couldn't be happier with the experience."
Generac Generator
Panel Upgrade
EV Maintenance
Landscape Lights
Specialized Lighting

+4

Response time3 hrs
Response rate92%
2 neighbors recently requested a quote
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Generator Install FAQs, 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.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

If your home already has a grinder pump and you’re still noticing issues (like frequently clogged toilets and sinks), it could be time to upgrade your grinder pump. Start by checking your existing horsepower. If there are four or fewer people living in your home, using a 1/2-horsepower grinder pump should be sufficient. Larger households should consider investing in a 1-horsepower grinder pump to maximize wastewater removal efforts.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

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, MI homeowners’ guide to generator installs

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