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

Verified Reviews for Generator Install pros in Cornelius, NC

*The Angi rating for Generator Install companies in Cornelius, NC 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 Cornelius, NC 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 February 12, 2026

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
)
Fixed Generator - Repair

Serving Cornelius, NC and surrounding areas

Approved

In business since 1988

Free estimates

Emergency services offered

"This project involved the routine maintenance of a generator. All the Technicians demonstrated excellent product knowledge and attention to detail. Very pleased with the company and the service!"
14KW Generator System
Voltvault Breaker Panels
Voltvault Breaker Panels
Back-Up Generator Residential
Back-Up Generator Commercial

+13

Recommended by83%of homeowners
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Avatar for Power Source Electrical Services Inc.
Power Source Electrical Services Inc.
4.3(
8
)
Fixed Generator - InstallFixed Generator - Repair

Serving Cornelius, NC and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"They have great service. We call to tell them what’s going on, they come and fix it, then they leave and send us a bill. It’s perfect."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

61 neighbors recently requested a quote
Recommended by100%of homeowners
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Tamcoat Electrical Contractors
4.3(
72
)
Fixed Generator - Install

Serving Cornelius, NC and surrounding areas

Approved

In business since 1998

Free estimates

Customers say: Terrific value

"We were VERY PLEASED we hired TAMCOAT! WOW, they did an AWESOME job and we now know to call "OUR ELECTRICIAN" for any future jobs. We gave them about 6 - 7 "TO DO" items and the work was done very efficiently and quality all the way. We were VERY IMPRESSED! Thank you TAMCOAT for your fine service."
Response time10 mins
18 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for NuBlue Electric
NuBlue Electric
4.7(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Cornelius, NC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Timely, courteous and very neat. Did very good job."
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
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Avatar for Evans Integrity Electric, Inc.
Evans Integrity Electric, Inc.
4.7(
90
)
Fixed Generator - InstallFixed Generator - Repair

Serving Cornelius, NC and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"They were great. But he's moved to North Carolina. They were clean, they were kind, they helped out as a matter of fact I tried to call them again and that's when I find out that they had moved to North Carolina he had sold the business."
Response time7 hrs
Response rate100%
16 neighbors recently requested a quote
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Avatar for Walker Electrical Services
Walker Electrical Services
5.0(
11
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Cornelius, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Drew did an amazing job helping with my electrical needs! He was very punctual, professional, and has all of the state required licenses. I trust his work and will definitely hire him again! When it comes to electrical work, make sure you hire a qualified professional like Walker Electrical!!!"
Portfolio
Portfolio
Portfolio
Portfolio
Portfolio

+12

Response time8 hrs
Response rate95%
Recommended by9%of homeowners
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Avatar for Mills Electric Company LLC
Mills Electric Company LLC
5.0(
8
)
Fixed Generator - InstallGenerator - Install - For BusinessGenerator - Repair - For Business

Serving Cornelius, NC and surrounding areas

Approved

In business since 2023

Emergency services offered

Warranties offered

"Eddie knows exactly what heâ s doing. He upgraded my electric panel, and I can now can hook up my generator without issues. I would recommend him to anyone!"
Upstairs Dimmable lighting and fan
Upstairs Dimmable lighting and fan
Cabin fans and lighting
Cabin fans and lighting
Cabin fans and lighting

+6

Response time5 days
Recommended by87%of homeowners
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Avatar for ALB Electric L.L.C
ALB Electric L.L.C
5.0(
17
)
Portable Generator - Install

Serving Cornelius, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Great work and excellent communication. I would recommend to anyone. Charger was installed quickly and professionally. Will hire in the future for more work. Thank you again!"
Response time2 hrs
Response rate96%
28 neighbors recently requested a quote
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Avatar for Candela Electric LLC
Candela Electric LLC
5.0(
11
)
Portable Generator - Install

Serving Cornelius, NC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"AJ was incredible! Super knowledgeable and personalble. He walked me thru what he was doing and best practices for using space heaters and other electronics in my home. I have more work to be done and Im definitely hiring him again. You should too"
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

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

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

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.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

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. 

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.

See all articles