*The Angi rating for Generator Install companies in Randolph, WI 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 Randolph, WI 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 February 19, 2026
Serving Randolph, WI and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"The crew did an excellent job. Efficient and timely and the end result is perfect!"
+1
Serving Randolph, WI and surrounding areas
Approved
In business since 2013
Free estimates
Customers say: Quality work
"Tim was highly professional and punctual in fact they showed up an hour early. I wasn’t able to be home while Tim was performing the work. But he kept me in the loop the entire time. He advices a better alternative to solve my electrical outlet needs. Tim was very responsive with addressing all of the questions I asked via text leading up to the install day. Over the last couple of years I’ve had electrical work done by three other electricians two of which were good. Overall the level of service Tim provided was above and beyond."
Serving Randolph, WI and surrounding areas
Approved
In business since 1984
Free estimates
Warranties offered
"My home generator needed servicing"
Serving Randolph, WI and surrounding areas
Approved
In business since 2019
Free estimates
Warranties offered
"Installation was prompt and the solar panels have worked great so far. The phone app to track your solar production is also really good."
+16
Serving Randolph, WI and surrounding areas
Approved
In business since 2001
Emergency services offered
Customers say: Quality work
"Excellent work. They ran electrical wiring in the attic, mounted electric boxes/switches, and installed two ceiling fans/lights. They had the right tools and knew what to do. They did the work for less than original estimate. This was for a job that one other firm (upon seeing the job) turned it down as being too difficult. I highly recommend them."
Serving Randolph, WI and surrounding areas
Approved
In business since 2007
Free estimates
Emergency services offered
NextPhase provides network and technology support to business. We are available to assist as the first point of contact for any technology support needs, and are also able to assist IT staff with specific projects or needs. We enjoy a challenge, and often are able to quickly resolve long standing IT and technology issues when others have failed.\n\nAs a full service technology provider, we are able to assist with network infrastructure, new PC and server equipment, telephone and voice equipment, and network security. We work with a wide range of technology solutions and are experts working with Windows and Linux.
Serving Randolph, WI and surrounding areas
In business since 2015
Free estimates
Emergency services offered
"The contractor installed a car charging electric line in the garage. The work was done well. However, the contractor could give no explanation about a verbal and a contractual promise that was not honored."
Serving Randolph, WI and surrounding areas
In business since 2019
Free estimates
Emergency services offered
"Randy and Jeff were great. They worked with my budget and gave me options. Super friendly."
+9
Serving Randolph, WI and surrounding areas
In business since 2017
Free estimates
Credit card accepted
"Professional, easy to talk to and good at trouble-shooting. Let us know when to expect his arrival and brought a number of tools and items to help complete the fireplace TV bracket installation."
Serving Randolph, WI and surrounding areas
In business since 1959
Free estimates
Emergency services offered
"The team at Kelchner's Arctic Air is amazing. They do a great job, are timely, and go above and beyond with their services. Whenever I need professional work done on my home, Brian is my first call."
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 cost to install a generator transfer switch depends on several factors. Our guide will help you understand all of the costs.
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.
Generators should give you peace of mind, but you’ll only get that if your installer knows what they’re doing. Learn how to hire a pro and what red flags to look for.
Whole home generator installations require a professional hand. Read this guide to help you decide which generator is best for your home.
Wondering who to hire to install a generator? Consult this guide to learn who to hire to install a generator or a transfer switch.
