*The Angi rating for Generator Install companies in Olney, 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 Olney, 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 August 07, 2025
Serving Olney, IL and surrounding areas
Approved
In business since 2018
Emergency services offered
Small jobs welcome
"Josh did a fantastic job! Easily worked me into his schedule and was very accommodating.."
Serving Olney, IL and surrounding areas
Approved
In business since 1969
Free estimates
Emergency services offered
"I was pleased with the installation of the lightning rods--communication was great and the work was done quickly. What I wasn't happy with is he quoted me a price that was less then my actual bill was BUT the price was still less then two other contractors bids."
+70
Serving Olney, IL and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"our phone system is old, but they got the work done! Thanks Joe and the teams!"
Serving Olney, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"Great guy, years of experience. It was cheap buy great quality work done in a timely manner"
Serving Olney, IL and surrounding areas
Approved
My name is David Michl, and Next Phase Power LLC is built on 20 years of hands-on electrical experience across residential, commercial, and industrial work. From home wiring to underground PVC trenching for services, fuel stations, and farms, I understand how important reliable power is to everyday life.\nProudly serving Jasper County, Effingham, and surrounding communities with dependable service, honest work, and quality craftsmanship. Fully licensed and insured, competitive pricing, and free estimates. Feel free to call or text anytime, and don’t forget to leave a review here or on our Facebook page. Thank you for your support!
Serving Olney, IL and surrounding areas
Approved
I’m a hardworking person who doesn’t like to leave projects half finished or looking sloppy, I can be a bit of a perfectionist. I’ve always fixed and built almost everything I needed myself and I take pride in being self sufficient. I’ve been an electrician for a year and half now and before that I was fabricating aerators for private residences. I have a wife and two children, so I can handle the chaos of a whole house remodel even if you decide to alter any details halfway through.
Serving Olney, IL and surrounding areas
Approved
In business since 2017
Free estimates
Offers commercial services
Monday-Saturday 7-7\nT.K. Carlson Construction 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.
Serving Olney, IL and surrounding areas
In business since 2012
Free estimates
Emergency services offered
"It went fine. Dave came to Peoria to do our job and did a very good job on the doors. I was not the supervisor but was told everything was done according to the condo boards liking and that right there tells me the most because we have some board members who expect high quality work and they got it . Dave the owner is someone who will not accept any work associated with his company AOM or his name be anything but top of the line. As I said before he is very good at what he does . He came here to refinish the entrance way on the front of the our building Chateau Touraine. He sanded off all the old stuff and put new stain and sealer on the doors and spruced up the wood areas around and above the main doors. The whole area is now back to what it use to be. I am not sure when the doors were installed but I know they are back to looking almost new again. I guessed that the doors are about 12-15 years old. Like I said before Dave and his employees are always there to please and have hit a home run with us again. I am sure that I will be hiring AOM again to do more work in my condo and I am sure the condo board will be doing the same. If you need a company that does many different things then give AOM a call and see what you think.
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+5
Serving Olney, IL and surrounding areas
In business since 1972
Free estimates
Emergency services offered
"John Sherlock and his wife are the consummate professionals! I would highly recommend them. Their attention to detail and installation quality, was superb. Johns knowledge of Lighting protection is apparent after 40+ years. You will not be disappointed . July 2020. D.Riggio Carterville, Illinois"
+13
Serving Olney, IL and surrounding areas
In business since 1970
Free estimates
Emergency services offered
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
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.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
From average costs to expert advice, get all the answers you need to get your job done.
The average cost of a whole-house generator falls between $5,000 and $25,000. Keep reading to learn how much you can expect to spend.
Natural gas generators are whole-home standby generators that are connected to your home’s natural gas line. The average cost for a natural gas generator is $12,000.
The cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
Say goodbye to blackouts by learning how to install a generator transfer switch. By following our guide, you’ll have a solution to nonstop power.
Portable generators ensure your essential appliances and electronics stay powered during an outage. Learn how to hook up a generator to your house.
Before installing a fixed generator, think about your use and space. Review these backup generator questions to prepare for a talk with your contractor.
