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Avatar for Powerhouse Electric & Generators
Powerhouse Electric & Generators
4.8(
16
)
Fixed Generator - InstallFixed Generator - Repair

Serving Denver, NC and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

Welcome to Powerhouse Electric & Generators! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!\n

Generac
2 neighbors recently requested a quote
Recommended by53%of homeowners
Avatar for Mr. Electric of Gastonia
Mr. Electric of Gastonia
4.8(
62
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Denver, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"I am very pleased with the service I received from Mr. Electric of Gastonia. Daniel and Matt explained all the issues with the old panel and I decided to have it replaced along with a whole house serge protector. While they were here they kept me informed of what they were doing and how the job was progressing and when they were done they cleaned up. Daniel and Matt were always on time and they called ahead when they were on their way. Brian set up my appointment times and scheduled me for the electrical inspection so I didn't have to do any of that. The inspector was here this morning and told me that it was really nice to see good quality electrical work. I would not hesitate to refer them to family and friends, I am happy with the job they did for me."
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+89

3 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Evans Integrity Electric, Inc.
Evans Integrity Electric, Inc.
4.7(
90
)
Fixed Generator - InstallFixed Generator - Repair

Serving Denver, 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
Avatar for ALB Electric L.L.C
ALB Electric L.L.C
5.0(
25
)
Portable Generator - Install

Serving Denver, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"LJ did a great job upgrading my panel. The price as fair and he his work was very clean. I really felt like he knew exactly what he was doing and explained it to me clearly. Our panel has been installed for a while now and we have not had a single issue. I would definitely hire him again and have already recommended him to all my neighbors."
Response time2 hrs
Response rate96%
69 neighbors recently requested a quote
Avatar for Walker Electrical Services
Walker Electrical Services
5.0(
11
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Denver, 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!!!"
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+12

Response time8 hrs
Response rate95%
Recommended by9%of homeowners
Smart Power Source, Inc.
4.6(
11
)
Fixed Generator - Install

Serving Denver, NC and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"I had been reaching out to other vendors and had a hard time getting a call back. Jason got back to me quickly and answered every question and concernI had about generators and installation. His crew were nice, quick and tidy! Well organized and detailed work! Thank you!"
Response time10 mins
Response rate88%
Recommended by90%of homeowners
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Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

Yes, installing a generator usually increases your property value because buyers are getting the added peace of mind knowing they’ll be able to maintain power through blackouts. In most cases, you should see close to a 100% return on investment (ROI). Keep in mind that home generators usually need a permanent foundation, and installing a concrete slab will likely raise your property taxes slightly.

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500–$2,000

  • Partial-Home Generators (9kW–20kW): $2,000–$6,500

  • Whole-House Generators (22kW–48kW): $5,000–$18,000

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

The Denver, NC homeowners’ guide to generator installs

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