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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 Brown Deer, WI and surrounding areas

Approved

In business since 1983

Emergency services offered

Credit card accepted

"Dan (The Technician) and his Apprentice (Brody) were EXCELLENT) and would give them more than 5 STARS IF POSSIBLE! We have used Dan at Current Electric several times with difficult tasks but he seems to always find a way to get the project done! We had 3 lights installed today, had rewiring so they not exposed and got our projects done that we wanted for 2 years now THANK YOU SO MUCH! I would recommend them to anyone! Pat (Hartland, Wisconsin)"
Kitchen Remodel
Landscape Lighting
Restaurant Lighting
Lighting in newly built hotel
Commercial Solar

+2

Response time1 day
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Powerhouse, LLC
Powerhouse, LLC
5.0(
22
)
Generator - Install - For Business

Serving Brown Deer, WI and surrounding areas

Approved

In business since 2002

Free estimates

Offers commercial services

"Jim was very fast at coming to evaluate what we all needed to have done. He did a great job and cleaned up after he was finished. While he was here we had an issue come up for another electrical problem and he ordered the part and came back as soon as he got the part. Will definitely hire him again when we need electrical work."
Response time12 hrs
Recommended by95%of homeowners
Avatar for Freedom Electric, LLC
Freedom Electric, LLC
4.9(
8
)
Fixed Generator - InstallPortable Generator - Install

Serving Brown Deer, WI and surrounding areas

Approved

In business since 2021

Free estimates

Small jobs welcome

"Tony installed soffit lights in our home and garage. We couldnâ t be happier with the results. Work was performed with the utmost professionalism and courtesy. He even took the time to completely explain how to use an app to control the lights installed. We would highly recommend Freedom Electric."
Response time1 day
Response rate85%
Recommended by100%of homeowners
Avatar for Unstoppable Electric LLC
Unstoppable Electric LLC
5.0(
7
)
Fixed Generator - InstallFixed Generator - Repair

Serving Brown Deer, WI and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Unstoppable Electric LLC just installed our Tesla Wall Connector, and wow—what an incredible experience. They were super responsive from the first message, easy to schedule, and showed up right on time. Max is very knowledgeable, professional, and genuinely nice to talk to. He took his time to do everything perfectly—clean, precise, top-quality work with no rush whatsoever. Explained everything clearly, made smart suggestions, and left the garage looking flawless. Pricing was fair and transparent—no surprises. Definitely now my go-to electrician in the area! 10/10 recommend! Thanks again for the stellar work! ⚡️🚗"
Avatar for Milwaukee Electrical
Milwaukee Electrical
5.0(
2
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Brown Deer, WI and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Elliott does great work for a great price. He installed a new 100 amp breaker box and updated some of the house wiring to accommodate the new service. He also wired the newly renovated basement with all the wiring and installed all the outlets, switches and drop ceiling LED lights that have dimmer capability. He is meticulous in what he does."
Response time1 day
Recommended by100%of homeowners
Avatar for Ls industrial repair
Ls industrial repair
5.0(
2
)
Portable Generator - Repair

Serving Brown Deer, WI and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"He showed up in a timely manner. He did the job quickly. There was a shorted wire that he had to re-run and pull through the existing pipe. So far it's all working great and has not needed to return. So far everything working great."
Avatar for Witty Property Solutions
Witty Property Solutions
5.0(
3
)
Portable Generator - Repair

Serving Brown Deer, WI and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"We were very pleased with the caulking and painting work Alex recently did for us. The caulking work was near perfect, and the thorough prep work before painting was notable. He went out of his way to guarantee our satisfaction with our painting project. We have no reservations recommending Alex and would hire him again."
Tosa Kitchen Refresh
1 neighbors recently requested a quote
Avatar for SEIDER HEATING & AIR CONDITIONING INC
SEIDER HEATING & AIR CONDITIONING INC
5.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Brown Deer, WI and surrounding areas

Approved

In business since 1912

Free estimates

Emergency services offered

"Absolutely commendable service. Extremely neat removal/ installation, fair price and clearly communicated hot water tank warranty information. Without a doubt, we will use Seider Heating, Plumbing and Electrical for any future needs. In a word this company is "outstanding"."
Water Heater Install
Mechanical Room
Basement Work
Water Manifold
Fixture Installations

+13

5 neighbors recently requested a quote
Showing 1-10 of 40
Generator Install questions, answered by experts

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

The Brown Deer, WI homeowners’ guide to generator installs

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