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Verified Reviews for Generator Install pros in Mercer, WI

*The Angi rating for Generator Install companies in Mercer, 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 Mercer, 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 October 26, 2025

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Avatar for Gray Electric LLC

Gray Electric LLC

N4717 Hwy 12-16
5.00(
1
)

Gray Electric LLC

N4717 Hwy 12-16
5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Proudly serving both Mauston and Tomah and the area for over 50 years as a family owned and operated business, Gray Electric is the leading residential and commercial, and industrial electrical service provider in the region. Not only can we address any electrical service needs, we’ll provide you with a variety of options so you can choose which one works best for you! We handle projects of any size, from residential repairs to rewiring entire factories. Our employees are skilled at their craft, have apprenticed with master electricians, take continuing education courses, and regularly attend seminars. The main goal of Gray Electric for has always been quality customer service. That goal has been attained with the professional, competent, and caring employees.

"Great, the electrician showed up on time, replaced the box and put a new cover on, and he even swept up his mess and wiped the floor up with a paper towel! Would recommend to any of my friends and family!"

Myles C on February 2019

Proudly serving both Mauston and Tomah and the area for over 50 years as a family owned and operated business, Gray Electric is the leading residential and commercial, and industrial electrical service provider in the region. Not only can we address any electrical service needs, we’ll provide you with a variety of options so you can choose which one works best for you! We handle projects of any size, from residential repairs to rewiring entire factories. Our employees are skilled at their craft, have apprenticed with master electricians, take continuing education courses, and regularly attend seminars. The main goal of Gray Electric for has always been quality customer service. That goal has been attained with the professional, competent, and caring employees.

"Great, the electrician showed up on time, replaced the box and put a new cover on, and he even swept up his mess and wiped the floor up with a paper towel! Would recommend to any of my friends and family!"

Myles C on February 2019

Next Energy Solution Inc.

231 Walnut St
1.00(
2
)

Next Energy Solution Inc.

231 Walnut St
1.00(
2
)
30 years of experience

Next Energy Solution Inc. is a Pioneer in the Solar Electric Industry with Pre Engineered Plug N Play Solar Electric Systems. We contract with Electrical design engineers throughout North America to bring the best possbile solution for the customer. We prescreen our contracting partners to ensure they are properly Licensed and Insured and trained, giving our customer a good experience and willingness to refer NES to the friends. NES offers No Money Down Financing program up to $40,000. NES is AG Star approved vendor of Solar Electric Systems for Agriculture NES has specially designed easy to install Plug N Play Solar kits with a 25 Year performance Warranty.

"It did not. After paying a down payment and submitting all paperwork the array was not installed. From my experience I cannot recommend this company."

Shane B on August 2018

Next Energy Solution Inc. is a Pioneer in the Solar Electric Industry with Pre Engineered Plug N Play Solar Electric Systems. We contract with Electrical design engineers throughout North America to bring the best possbile solution for the customer. We prescreen our contracting partners to ensure they are properly Licensed and Insured and trained, giving our customer a good experience and willingness to refer NES to the friends. NES offers No Money Down Financing program up to $40,000. NES is AG Star approved vendor of Solar Electric Systems for Agriculture NES has specially designed easy to install Plug N Play Solar kits with a 25 Year performance Warranty.

"It did not. After paying a down payment and submitting all paperwork the array was not installed. From my experience I cannot recommend this company."

Shane B on August 2018

Avatar for Toboa Energy Resources LLC

Toboa Energy Resources LLC

200 S Executive Dr #101
No reviews yet

Toboa Energy Resources LLC

200 S Executive Dr #101
No reviews yet
18 years of experience

Specializing in sales and application of industrial products providing high quality US made solar and fluid handling equipment with products such as pumps, filters, valves and more. We offer expert application engineering services for complete lines of power generation equipment and accessories, portable and stationary lighting, heat transfer, electric motors and drives, just about everything! Buy your equipment here online or over the phone offering top brand pumps, filters, valves, solar panels, generators, commercial and residential lighting solutions a perfect source for contractors. Toboa Energy serves original equipment manufacturers “O.E.M.s”, commercial, industrial and residential customers. Located in the heartland of America we’ve supplied residential, commercial, agricultural, industrial, military and government needs online since 2007. We offer products designed, assembled or completely built in North America.

Specializing in sales and application of industrial products providing high quality US made solar and fluid handling equipment with products such as pumps, filters, valves and more. We offer expert application engineering services for complete lines of power generation equipment and accessories, portable and stationary lighting, heat transfer, electric motors and drives, just about everything! Buy your equipment here online or over the phone offering top brand pumps, filters, valves, solar panels, generators, commercial and residential lighting solutions a perfect source for contractors. Toboa Energy serves original equipment manufacturers “O.E.M.s”, commercial, industrial and residential customers. Located in the heartland of America we’ve supplied residential, commercial, agricultural, industrial, military and government needs online since 2007. We offer products designed, assembled or completely built in North America.

Tek Electric

6246 Duame Rd
3.00(
2
)

Tek Electric

6246 Duame Rd
3.00(
2
)
Customers say: Terrific value
23 years of experience

TEK Electric Inc has been around for over ten years. We are a full service electrical contractor for residential and commercial. For the past six years our specialty is Home Back Up Generators. We are dealers for both Generac and GE. We are Northern's Wisconsin's only Elite Dealer for Generac.

TEK Electric Inc has been around for over ten years. We are a full service electrical contractor for residential and commercial. For the past six years our specialty is Home Back Up Generators. We are dealers for both Generac and GE. We are Northern's Wisconsin's only Elite Dealer for Generac.

Avatar for Central State Electric Corporation

Central State Electric Corporation

3017 Hoover Road, Suite E
5.00(
2
)

Central State Electric Corporation

3017 Hoover Road, Suite E
5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Welcome to Central State Electric! If you live in Stevens Point, Wausau, Marshfield, Appleton, Plover, Oshkosh or the surrounding cities in Central Wisconsin, you can depend on Central State Electric for a broad range of electrical contracting services. In addition to standard residential, commercial and industrial construction wiring, our areas of expertise include panel upgrades, maintenance programs, and the installation of standbye generators, pool and spa electrical systems, custom lighting, fire alarms, smoke detectors, and carbon monoxide detectors. Established in 1983, we are a fully licensed electrical contractor with one goal in mind, quality electrical work at competitive prices. Call us for your next electrical needs.

Welcome to Central State Electric! If you live in Stevens Point, Wausau, Marshfield, Appleton, Plover, Oshkosh or the surrounding cities in Central Wisconsin, you can depend on Central State Electric for a broad range of electrical contracting services. In addition to standard residential, commercial and industrial construction wiring, our areas of expertise include panel upgrades, maintenance programs, and the installation of standbye generators, pool and spa electrical systems, custom lighting, fire alarms, smoke detectors, and carbon monoxide detectors. Established in 1983, we are a fully licensed electrical contractor with one goal in mind, quality electrical work at competitive prices. Call us for your next electrical needs.

AP Electric & Generators LLC

8401 102nd Street
4.78(
18
)

AP Electric & Generators LLC

8401 102nd Street
4.78(
18
)
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers

No company cares more about delivering affordable and reliable backup power solutions than AP Electric & Generators LLC. As a company, we know that getting the generator to your door is not the only step. Beyond the price of a generator, we have the tools in place to get you the generator options that you need.

No company cares more about delivering affordable and reliable backup power solutions than AP Electric & Generators LLC. As a company, we know that getting the generator to your door is not the only step. Beyond the price of a generator, we have the tools in place to get you the generator options that you need.

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)
53 years of experience

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

Avatar for Adams Electric Inc

Adams Electric Inc

504A Nathan Ln
4.46(
24
)

Adams Electric Inc

504A Nathan Ln
4.46(
24
)
Customers say: Quality work
38 years of experience

Since 1987 Adams Electric has been creating electrical solutions for every need in southeastern Wisconsin and Northern Illinois. We are a family owned and operated business that knows the value of integrity, quality and hard work. Our professional and friendly staff makes it their aim to exceed your expectations and do so with maximum safety practices. We are a full-service electrical contractor specializing in complex industrial, commercial, farm and residential applications as well as standby power solutions. We are southeastern Wisconsin's premier standby power providers, specializing in the sale, installation and maintenance of Generac generators-the world's leading standby power company. With a fleet of 22 vehicles, our highly skilled crew is available and willing to provide 24-hour emergency service. With Adams Electric you are provided not only with excellent workmanship, but pricing that is fair. Our warranty support services provide you a safe and easy way to make sure you are getting the best product and service you possibly can. At Adams Electric we are passionate about providing power solutions for you and your business. Experience for yourself why customers call Adams Electric "the best".

"In 2002, my 22 year old son suffered a traumatic brain injury while skiing. We built an addition on to our home to care for him 24 hours a day. At the time, his care required the use of equipment to keep him functioning. We had a generator installed for those occasions when the power went out. Many times this generator was needed and it kept my son alive. We had it serviced each year for $300. For 18 years we promptly paid $5,400 for service. My son died in 2018 and I kept servicing the generator because my husband had died from cancer in 2013 and I was trying to maintain the household and fearful of a gas generator in disrepair blowing up. In 2021, I had the generator serviced in the summer as I had continued to do, and 3 months later when a storm caused the power to go out the generator did not come on. I called ADAMS the next morning and was told that that shouldn’t have happened and they would send out a technician. The technician arrived a few days later and informed me that the generator was set to exercise “too high” and it had overheated and turned itself off. He reset it to the proper level and cordially assured me that all was now well and I was grateful. He was a very nice young man. I mistakenly assumed that this was a courtesy call to rectify the mistake of the previous technician who had set the generator too high 3 months before. When the bill for $135 appeared for the repair, I refused to pay it. I called many times and the one time I got through, I tearfully explained my long story to the receptionist, including the fact that if my son had still been alive, the broken generator would have ended his life. She said she was sorry for my loss and that she would take care of it. However, I continued to get bills and am now threatened with a collection agency and damage to my credit score. I am not worried about my very high excellent credit score. I have paid every bill I have ever I received all 68 years of my life and have raised 6 adult children to do exactly the same, as they are doing for all 15 of my grandchildren. I am paying this $135 bill and hope it goes right into the pocket of the technician who reset the generator properly but they probably fired him for telling me the truth. Do business with this company at your own risk."

Jane S on August 2022

Since 1987 Adams Electric has been creating electrical solutions for every need in southeastern Wisconsin and Northern Illinois. We are a family owned and operated business that knows the value of integrity, quality and hard work. Our professional and friendly staff makes it their aim to exceed your expectations and do so with maximum safety practices. We are a full-service electrical contractor specializing in complex industrial, commercial, farm and residential applications as well as standby power solutions. We are southeastern Wisconsin's premier standby power providers, specializing in the sale, installation and maintenance of Generac generators-the world's leading standby power company. With a fleet of 22 vehicles, our highly skilled crew is available and willing to provide 24-hour emergency service. With Adams Electric you are provided not only with excellent workmanship, but pricing that is fair. Our warranty support services provide you a safe and easy way to make sure you are getting the best product and service you possibly can. At Adams Electric we are passionate about providing power solutions for you and your business. Experience for yourself why customers call Adams Electric "the best".

"In 2002, my 22 year old son suffered a traumatic brain injury while skiing. We built an addition on to our home to care for him 24 hours a day. At the time, his care required the use of equipment to keep him functioning. We had a generator installed for those occasions when the power went out. Many times this generator was needed and it kept my son alive. We had it serviced each year for $300. For 18 years we promptly paid $5,400 for service. My son died in 2018 and I kept servicing the generator because my husband had died from cancer in 2013 and I was trying to maintain the household and fearful of a gas generator in disrepair blowing up. In 2021, I had the generator serviced in the summer as I had continued to do, and 3 months later when a storm caused the power to go out the generator did not come on. I called ADAMS the next morning and was told that that shouldn’t have happened and they would send out a technician. The technician arrived a few days later and informed me that the generator was set to exercise “too high” and it had overheated and turned itself off. He reset it to the proper level and cordially assured me that all was now well and I was grateful. He was a very nice young man. I mistakenly assumed that this was a courtesy call to rectify the mistake of the previous technician who had set the generator too high 3 months before. When the bill for $135 appeared for the repair, I refused to pay it. I called many times and the one time I got through, I tearfully explained my long story to the receptionist, including the fact that if my son had still been alive, the broken generator would have ended his life. She said she was sorry for my loss and that she would take care of it. However, I continued to get bills and am now threatened with a collection agency and damage to my credit score. I am not worried about my very high excellent credit score. I have paid every bill I have ever I received all 68 years of my life and have raised 6 adult children to do exactly the same, as they are doing for all 15 of my grandchildren. I am paying this $135 bill and hope it goes right into the pocket of the technician who reset the generator properly but they probably fired him for telling me the truth. Do business with this company at your own risk."

Jane S on August 2022

Generator Install questions, answered by experts

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

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

Whole-house generators can last 20 to 40 years with normal operation and proper maintenance. If you look up the specifications for your generator, you may be able to find a lifespan rated in hours of operation. Life expectancy will vary depending on how often and for how long you use the generator each year. Choosing a fuel with low impact like natural gas or diesel can help generators last as long as possible.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

The Mercer, WI homeowners’ guide to generator installs

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

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