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TRUSTED BY CORNELIUS, NC HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon17
    Verified generator installs reviews

Find Generator install pros in Cornelius

Avatar for Mister Sparky by Wise Electric Control, Inc.
Mister Sparky by Wise Electric Control, Inc.
4.6(
293
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 1988

Free estimates

Emergency services offered

"Christian was helpful, answering my questions and showing me where my generator could be placed and explained the installation process, His visit was not to repair a generator, but to get me a quote."
 14KW Generator System
 Voltvault Breaker Panels
  Voltvault Breaker Panels
 Back-Up Generator Residential
  Back-Up Generator Commercial

+13

Recommended by83%of homeowners
Avatar for Power Source Electrical Services Inc.
Power Source Electrical Services Inc.
4.3(
8
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Great follow through, good pricing. The generator required several trips and follow-up items because it required different inspections. They did a great job at following up on these steps and the generator works perfectly. Since that time we called them for some smaller electrical jobs. They are very detailed oriented, an example would be that I gave what I thought I wanted and they gave feedback based on their experience showing a better way to do it. I welcomed this and was happy they suggested it."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

61 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for NuBlue Electric
NuBlue Electric
4.7(
12
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Our tech Rob Craven did an excellent job! Very polite and professional, he installed it easily and cleaned up afterwards. Will definitely call NuBlue again for any electrical needs we may have."
EV Charger Installation
Electrical Panel Upgrade and Installation
Electrical Fixture Installation Services
Generator Installation Services
EV Charger Installation

+80

Response time1 day
10 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Evans Integrity Electric, Inc.
Evans Integrity Electric, Inc.
4.7(
90
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"

It went very well.  Due to some problems with kitchen appliances not working properly due to bad circuit breakers and knowing the electrical panel is about 30 years old, I thought it was time for the  panel to be replaced and possibly upgraded. 

Matt checked the panel, determined a complete panel replacement was not needed, only replacing all circuit breakers.  Some of the installed breakers were failing.

The work was done quickly and professionally.  Matt spent time as he worked telling me what he was doing and answered my many questions.

I especially appreciated his evaluation of our electrical power needs.  Based on our electric power usage now and in the future, he said we did not need to increase the amperage of the panel. 

Since the work was done, all kitchen appliances are now working properly.


"
Response time7 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Walker Electrical Services
Walker Electrical Services
5.0(
11
)

Serving Cornelius, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Drew, the owner of Walker Electric was the technician that actually showed up to do the work. I had him install a ceiling exhaust fan in my bathroom. He did excellent work replacing the old one with new and didn’t do any unnecessary drywall damage. I also had Drew install under cabinet strip lighting in my kitchen that came out looking wonderful. His pricing was more than reasonable and his quality of work was top notch. I would recommend Walker Electric for any of your electrical needs and I will absolutely be using them again in the future!"
Portfolio
Portfolio
Portfolio
Portfolio
Portfolio

+12

Response time8 hrs
Response rate95%
Recommended by9%of homeowners
Avatar for Candela Electric LLC
Candela Electric LLC
5.0(
11
)

Serving Cornelius, NC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Candela Electric is a licensed electrical contracting company proudly serving the Greater Charlotte region and surrounding communities. With over a decade of hands-on experience in residential and commercial electrical systems, the company delivers expert diagnostics, safe installations, and high-quality workmanship on every project. Services include general circuitry, electrical service upgrades, whole-house rewires, generator installation and maintenance, sports field lighting, EV and forklift charger installations, and more. Candela Electric is committed to responsive service, transparent communication, and durable solutions designed to meet the needs of homeowners and businesses alike."

200 amp RV pedestal
200 amp RV pedestal
200 amp RV pedestal
200 amp RV pedestal
Outdoor kitchen with internal and external receptacles, a remote control switch to switch string lights on and off.

+1

Response time3 hrs
5 neighbors recently requested a quote
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Generator Install questions, answered by experts

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.

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.

In most cases, there are no tax credits available for home generators. However, that’s a general statement that applies to federal tax credits, so you might have access to state or local tax incentives. You can check the Database of State Incentives for Renewables & Efficiency (DSIRE) for more information about your area. If you hire a reliable home generator installer, they should also know if there are any state or local perks you can use to reduce your installation costs, including tax breaks and rebates.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

The Cornelius, NC homeowners’ guide to generator installs

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