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

Serving Mount Holly, 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
3 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 Mount Holly, 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."
Additional Photos
Additional Photos
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Additional Photos

+89

3 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for ALB Electric L.L.C
ALB Electric L.L.C
5.0(
25
)
Portable Generator - Install

Serving Mount Holly, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"LJ, with ALB was fantastic, personable, professional, communication about my project was great. The install went smoothly, inspection with the county was arranged by LJ and completed… I highly recommend ALB for any and all of your electrical installation and electrical projects! Definitely a 5 star ⭐️ ⭐️⭐️⭐️⭐️ review is warranted.."
Response time2 hrs
Response rate96%
68 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 Mount Holly, 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
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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 Mount Holly, 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

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. 

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

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.

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.

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 Mount Holly, NC homeowners’ guide to generator installs

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