Get matched with top generator installers in Sullivan, WI
There are 2 highly-rated local generator installers.
Generator installers in Sullivan
Since 1983, Current Electric Co. has been providing homes and businesses throughout Milwaukee and surrounding areas expert electrical solutions. From whole home rewiring and service panel upgrades to lighting installation and outlet replacement, our highly trained electricians have you covered. We take the time to deliver unparalleled workmanship and customer service every time. Our local and skilled electricians work quickly and cleanly to restore your electric system as soon as possible while using cutting-edge products and techniques to ensure long-lasting and energy-efficient solutions. With years of commercial and residential electric experience, no job is too big or small for our highly trained team.
"Repairman came in, looked it over, made a few quick tests and gave us the quote. After we agreed on the price, he tracked down the problem and replaced a defective heat sensor on the recessed light fixture. When completed, he cleaned up the small mess in the shower. He explained everything to me as he progressed. Good Service, Good Repairman and Fair Price!"
Robert W on February 2018
Since 1983, Current Electric Co. has been providing homes and businesses throughout Milwaukee and surrounding areas expert electrical solutions. From whole home rewiring and service panel upgrades to lighting installation and outlet replacement, our highly trained electricians have you covered. We take the time to deliver unparalleled workmanship and customer service every time. Our local and skilled electricians work quickly and cleanly to restore your electric system as soon as possible while using cutting-edge products and techniques to ensure long-lasting and energy-efficient solutions. With years of commercial and residential electric experience, no job is too big or small for our highly trained team.
"Repairman came in, looked it over, made a few quick tests and gave us the quote. After we agreed on the price, he tracked down the problem and replaced a defective heat sensor on the recessed light fixture. When completed, he cleaned up the small mess in the shower. He explained everything to me as he progressed. Good Service, Good Repairman and Fair Price!"
Robert W on February 2018
At Watts Up Electric, we pride ourselves on our unique approach to electrical services. Our team is passionate about delivering top notch solutions with a blend of professionalism and positivity. We treat every job, no matter the size, as our most important, ensuring that each client receives the highest level of attention and care. With Watts Up Electric you can expect a serious commitment to quality and a friendly, enthusiastic service that sets us apart from the rest.
"Good. Completed task quickly and professional. Was polite, and explained things in a manner where I understood the process."
Steve W on April 2025
At Watts Up Electric, we pride ourselves on our unique approach to electrical services. Our team is passionate about delivering top notch solutions with a blend of professionalism and positivity. We treat every job, no matter the size, as our most important, ensuring that each client receives the highest level of attention and care. With Watts Up Electric you can expect a serious commitment to quality and a friendly, enthusiastic service that sets us apart from the rest.
"Good. Completed task quickly and professional. Was polite, and explained things in a manner where I understood the process."
Steve W on April 2025
At Double U Electric, we take pride in offering every one of our customers electrical services at a fair price, while never straying away from our focus on customer service. We offer full range electrical services for anything around your home.
"They did everything I ask for and did a good job cleaning up."
Sharon M on January 2024
At Double U Electric, we take pride in offering every one of our customers electrical services at a fair price, while never straying away from our focus on customer service. We offer full range electrical services for anything around your home.
"They did everything I ask for and did a good job cleaning up."
Sharon M on January 2024
I pride myself on making sure that your IT needs and issues are resolved in a timely fashion. I will act as your IT professional, coordinating resolutions with all vendors connected to the issue. This can include your VOIP phone vendor, internet provider, or other software systems support. I can help you setup 3rd party software systems like UPS Worldship or SpeeDee Delivery for shipping. I have worked with various clients with the setup, of QuickBooks accounting, both On Premise and in the cloud. This includes importing data from other systems into Quickbooks. I have also migrated the QuickBooks desktop/on premise version to the Cloud based system. I routinely help customers with Computer, network, internet, and overall systems performance issues. When practical I will work onsite with you to assist you with your IT needs.
"Ironworks is very knowledgeable and responsive, ultimately in emergency situations. Jerry does not make me feel dumb and gives great tips for keeping us “users” out of big trouble. He is a lifesaver! Thank you!"
Debbie G on February 2025
I pride myself on making sure that your IT needs and issues are resolved in a timely fashion. I will act as your IT professional, coordinating resolutions with all vendors connected to the issue. This can include your VOIP phone vendor, internet provider, or other software systems support. I can help you setup 3rd party software systems like UPS Worldship or SpeeDee Delivery for shipping. I have worked with various clients with the setup, of QuickBooks accounting, both On Premise and in the cloud. This includes importing data from other systems into Quickbooks. I have also migrated the QuickBooks desktop/on premise version to the Cloud based system. I routinely help customers with Computer, network, internet, and overall systems performance issues. When practical I will work onsite with you to assist you with your IT needs.
"Ironworks is very knowledgeable and responsive, ultimately in emergency situations. Jerry does not make me feel dumb and gives great tips for keeping us “users” out of big trouble. He is a lifesaver! Thank you!"
Debbie G on February 2025
Our company is a small-scale IT consulting business servicing south central Wisconsin. Our primary focus is on servers, networking, and security. Our goal is to provide reliable and efficient IT solutions to businesses of all industry types. Our team of experienced IT professionals will work with clients to understand their specific needs and provide customized solutions that meet their requirements.
"Ben was very helpful and explained everything that he was going to do. I had an issue with a SD card reader on my laptop, and he was able to figure it out. Also transferred from an old laptop hard drive files to my current laptop. Ben walked me through changes that he had made and made sure that I understood all. I would highly recommend him."
Dennis J on October 2024
Our company is a small-scale IT consulting business servicing south central Wisconsin. Our primary focus is on servers, networking, and security. Our goal is to provide reliable and efficient IT solutions to businesses of all industry types. Our team of experienced IT professionals will work with clients to understand their specific needs and provide customized solutions that meet their requirements.
"Ben was very helpful and explained everything that he was going to do. I had an issue with a SD card reader on my laptop, and he was able to figure it out. Also transferred from an old laptop hard drive files to my current laptop. Ben walked me through changes that he had made and made sure that I understood all. I would highly recommend him."
Dennis J on October 2024
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. As 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.
"Jake is the best at what he does and is very thoughtful. I had a complicated situation and he visited the site and found an ideal solution for wifi connectivity. He created a fully built solution to my issue and examined all the points to consider."
Isaiah K on July 2022
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. As 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.
"Jake is the best at what he does and is very thoughtful. I had a complicated situation and he visited the site and found an ideal solution for wifi connectivity. He created a fully built solution to my issue and examined all the points to consider."
Isaiah K on July 2022
Over the Moon formally,In Phase Electric & Air, llc is in business for one reason: our customers. Our first and foremost mission is to educate customers on the safety of their home with their electrical and hvac systems. We specialize in repairing, installing and designing electrical and hvac systems in your home. Owner/operator Shawn White is a master electrician, as well as an electrical/hvac licensed contractor. What that means to our customers is that our services are backed with knowledge and experience to ensure the job is done safely and up to all state and local codes. We are fully insured and registered with the state of Wisconsin. Our team of licensed, background checked technicians service the southeastern Wisconsin communities in their orange warehouse on wheels. Our technicians are dedicated to supplying our customers with solutions met with customer service second to none. Trust us to Educate you on the Safety of your home.
"OTM had their own agenda, regardless of the problem."
William S on September 2024
Over the Moon formally,In Phase Electric & Air, llc is in business for one reason: our customers. Our first and foremost mission is to educate customers on the safety of their home with their electrical and hvac systems. We specialize in repairing, installing and designing electrical and hvac systems in your home. Owner/operator Shawn White is a master electrician, as well as an electrical/hvac licensed contractor. What that means to our customers is that our services are backed with knowledge and experience to ensure the job is done safely and up to all state and local codes. We are fully insured and registered with the state of Wisconsin. Our team of licensed, background checked technicians service the southeastern Wisconsin communities in their orange warehouse on wheels. Our technicians are dedicated to supplying our customers with solutions met with customer service second to none. Trust us to Educate you on the Safety of your home.
"OTM had their own agenda, regardless of the problem."
William S on September 2024
With over ten years of experience, we focus on electrical projects in the Elkhorn and surrounding areas. We will treat your property as if it were our own. Give us a call today, we look forward to working with you.
"We received great service from all the guys that came out to upgrade our Electrical. Hardworking- They really know their stuff. Trustworthy- I felt comfortable having them in my home. Friendly- Everyone was very courteous and respectful. Thank You Josh, Dan, Dylan, Vince, Michael and Josh. Chris and Lisa Yeagle"
chris y on January 2025
With over ten years of experience, we focus on electrical projects in the Elkhorn and surrounding areas. We will treat your property as if it were our own. Give us a call today, we look forward to working with you.
"We received great service from all the guys that came out to upgrade our Electrical. Hardworking- They really know their stuff. Trustworthy- I felt comfortable having them in my home. Friendly- Everyone was very courteous and respectful. Thank You Josh, Dan, Dylan, Vince, Michael and Josh. Chris and Lisa Yeagle"
chris y on January 2025
Capital Heating, Cooling, Electric & Plumbing is a trusted home service provider in Menomonee Falls, WI. We offer expert HVAC, electrical, and plumbing solutions with a commitment to quality, reliability, and customer satisfaction. Our team is available 24/7, ensuring fast and professional service whenever you need it. With top-rated technicians, upfront pricing, and industry-leading warranties, we guarantee comfort and peace of mind for every customer. Whether you need repairs, installations, or maintenance, we’re here to help!
"Nicholas did the job completely and professionally."
Donald B on April 2025
Capital Heating, Cooling, Electric & Plumbing is a trusted home service provider in Menomonee Falls, WI. We offer expert HVAC, electrical, and plumbing solutions with a commitment to quality, reliability, and customer satisfaction. Our team is available 24/7, ensuring fast and professional service whenever you need it. With top-rated technicians, upfront pricing, and industry-leading warranties, we guarantee comfort and peace of mind for every customer. Whether you need repairs, installations, or maintenance, we’re here to help!
"Nicholas did the job completely and professionally."
Donald B on April 2025
Generator installations FAQs
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 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.
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
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