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Avatar for Charleston Electric
Charleston Electric
4.7(
359
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint George, SC and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Not good, tech said the generator was out of code due to location, did not perform services. He told me office would be in touch they scheduled a quote bid for 9/23/2020 many weeks after tech was here, so after bid it will be one to two weeks before relocation of generator and service. Process is taking way to long I was willing to advance pay if they brought materials on 9/23 and complete proper install. It’s Hurricane season. They also billed me for the maintenance which he could not do because he said it was out of. Code."
20kw Cummins Onan Generator
Electrical Panel Upgrade
Bathroom remodel
20 KW Cummins Onan Generator
11 neighbors recently requested a quote
Recommended by91%of homeowners
365 Electric, LLP
4.7(
67
)
Portable Generator - Install

Serving Saint George, SC and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Support this local company because they provide exactly what they quote and do a great job. Prompt, professional, high quality product and service. When looking for a company that cares about what they do (and thats hard to find) this company shines."
Response time3 days
9 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Wadford Water Works, LLC
Wadford Water Works, LLC
4.9(
9
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Saint George, SC and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Mr. Wadford was and is very responsive to any query or request. He was always on time as was the installer. He was very patient and thorough in explaining the system operation and Bluetooth software. He insured that I understood everything and answered any and all questions. I have only had the system for a short time but it is performing perfectly. This project is to replace n old system. This new system cost $1500 less than the 20 year old system it replaced. The Wadford Water Works provides a quality system as well as quick, efficient and professional installation. I am thoroughly pleased with my decision with my choice to do business with Mr. Wadford."
Response time2 hrs
Recommended by88%of homeowners
Avatar for J and Jelectric
J and Jelectric
5.0(
11
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Saint George, SC and surrounding areas

In business since 2007

Emergency services offered

"The company does great work. I am please with the work. They worked fast and were very friendly. They will be installing more lights for me in the near future. The lights that I bought for him to install in the kitchen doesn’t light up the kitchen enough, so since I liked the design of light so much the owner suggested that i place the same exact light in another area of the kitchen. Great idea. He was hundreds dollars cheaper than other quotes that I received. They do wonderful work. I have already recommended him to my sister that needs electrical work."
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+15

Recommended by100%of homeowners
Avatar for Generator Supercenter of Charleston
Generator Supercenter of Charleston
1.8(
3
)
Fixed Generator - Install

Serving Saint George, SC and surrounding areas

In business since 2010

Free estimates

Warranties offered

Generator Supercenter is your area leader for all of your fixed generator needs. We know that customer service is key to a job well done, and ours is the best around. When you want top quality work at an always fair price, call the professionals at Generator Supercenter.

Generac 22kW
Mobile Link™
Generac 26kW
Generac 24kW
Generac 26kW

+1

Response time3 days
Recommended by33%of homeowners
Avatar for Menace Electric
Menace Electric
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Saint George, SC and surrounding areas

Welcome to Menace Electric electrical services — your trusted local electrician for reliable, high-quality electrical work.\n\nI’ve proudly owned and operated this small business for a little over two years, providing dependable electrical services to homeowners and businesses in our community. As a detail-oriented electrician, I take pride in delivering safe, efficient, and professional results on every project — no shortcuts, no compromises.\n\nWhether you need residential wiring, lighting installation, panel upgrades, troubleshooting, or maintenance, I’m committed to providing honest work, fair pricing, and top-tier craftsmanship.\n\nAt Menace Electric, customer satisfaction and safety is our top priority. I look forward to continuing to grow with the community and being your go-to electrician for years to come.\nAs always, we look forward to seeing you. ~ Dawson Robnett.

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Generator Install questions, answered by experts

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

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.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

The Saint George, SC homeowners’ guide to generator installs

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