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Avatar for Current Electric Company
Current Electric Company
4.7(
140
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Oconomowoc, WI and surrounding areas

Approved

In business since 1983

Emergency services offered

Credit card accepted

"I would recommend Current Electric to anyone! They are affordable, professional, and customer service oriented. We had Eric as our electrician and he went above and beyond for us. We had a new outlet installed, can lights installed, and ceiling fans installed. He kept us informed the whole time with updates on progress, time frames, and got our input along the way. We will definitely be using Current for all of our electric needs."
Kitchen Remodel
Landscape Lighting
Restaurant Lighting
Lighting in newly built hotel
Commercial Solar

+2

Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Mister Sparky of Brew City
Mister Sparky of Brew City
4.9(
12
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Oconomowoc, WI and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Emergency services offered

"This is the first time I used Mr. Sparky, and they will definitely be my new go to electricians! I love that they are a small locally owned business! I called about a small non-urgent project, and they were able to come the same day, despite being backed up due to many local flooding issues. Kasey was extremely friendly and helpful on the phone and communication was excellent from start to finish. James showed up on time and was very sweet, yet professional, and my cats even loved him :) He was respectful of me and my property, and took care of my issue in no time. The price was very reasonable! I will definitely call them again, and would highly recommend!"
Branded Panel Install
Installation
Installation
Installation
Installation

+53

Response time1 day
Response rate93%
122 neighbors recently requested a quote
Avatar for Suburbs Electric
Suburbs Electric
5.0(
10
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Oconomowoc, WI and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Suburbs Electric 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.

Project Photos
18 neighbors recently requested a quote
Avatar for Unstoppable Electric LLC
Unstoppable Electric LLC
5.0(
7
)
Fixed Generator - InstallFixed Generator - Repair

Serving Oconomowoc, WI and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Max followed up quickly after our initial inquiry, and scheduling an appointment was a piece of cake. He arrived at our home promptly at our agreed upon time and quickly fixed what we needed done for a very reasonable price. We would definitely use Unstoppable again for any future electrical work."
Showing 1-10 of 42
Generator Install questions, answered by experts

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

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

The Oconomowoc, WI homeowners’ guide to generator installs

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