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Verified Reviews for Generator Install pros in Cambridge, IL

*The Angi rating for Generator Install companies in Cambridge, IL 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 Cambridge, IL 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 Cambridge

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Cambridge, IL and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game.\nWe provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

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+3

48 neighbors recently requested a quote
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Avatar for Power Services Company, LLC
Power Services Company, LLC
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Cambridge, IL and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"They went above and beyond for a generator install"
Adams County Generator In
Bank Generator Install
Work Shop install - Iowa
Response time1 day
Recommended by100%of homeowners
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Avatar for Empire Electric, Inc.
Empire Electric, Inc.
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Cambridge, IL and surrounding areas

In business since 2022

Credit card accepted

Offers commercial services

"Empire Electric goes above and beyond on customer service. Professional and friendly. Found the root of the problem quickly and were able to make the repair on the spot! Highly Recommend!"
Response time11 hrs
Response rate100%
Recommended by100%of homeowners
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J W Koehler Electric, Inc.
4.8(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Cambridge, IL and surrounding areas

In business since 1969

Free estimates

Credit card accepted

"JW. Koehler Electric has always had a welcoming professionalism that makes you sure to call them back for other projects in their area. I used them for our Premier customers and the customers are always happy. They respond quickly and if they can do it they will without charging arm and leg. I would definitely recommend JW Koehler !"
Recommended by100%of homeowners
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Freedom Electrical LLC
5.0(
3
)
Portable Generator - Repair

Serving Cambridge, IL and surrounding areas

In business since 2024

Credit card accepted

"I needed security cameras installed, and I am so glad I ran across Mitchell through Angi. I can’t say enough good things about this guy. He was on time and communicated well in person and through text. He was fast, effective, efficient, thorough, honest, hardworking, and just an overall decent guy. Once again, my wife and I are so glad that we ran across Mitchell at Freedom Electric and Construction, and we are looking forward to working with him on future projects!"
New install
Upgraded panel
Before
Typical replacement
Response time5 hrs
Recommended by100%of homeowners
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Showing 1-10 of 15
Generator Install questions, answered by experts

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. 

Costs range from $500 to $2,500, depending on generator type and installation complexity.

Costs depend on generator type, labor, and additional wiring or transfer switch requirements.

If you’re deciding between a solar battery versus a generator for the best backup power solution, you can take a few factors into consideration. Solar batteries are quiet while generators can be quite loud. Generators have a lower up-front cost, but they require fuel and ongoing maintenance while solar batteries are more expensive but don’t have many ongoing costs.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

The Cambridge, IL homeowners’ guide to generator installs

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

See all articles