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Avatar for Greens Electrical
Greens Electrical
5.0(
25
)

Serving Williamston, SC and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Mr. Green TRULY puts the customer first! He installed a whole house generator for me last August and called to check on us 6 months later because bad weather is coming. Brought me a key and showed me (again) how to add oil. I had several estimates and he beat other prices by several thousand $ AND he installed a bigger generator! I will definitely hire him again and recommend him to every one!! 5 star service *****!!"
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+1

Response time1 day
9 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for U.S. Energy Solutions
U.S. Energy Solutions
4.7(
74
)

Serving Williamston, SC and surrounding areas

Approved

In business since 2015

Warranties offered

Credit card accepted

"5 stars! Mark Chapman with US Energy Solutions just installed a manual transfer switch box for my portable generator. The work was done professionally, on time, and very reasonably priced. Mark tested the install before he finished and it was perfect the first time. He was knowledgeable and experienced. My next electrical project will start with a call to Mark!"
Horan Solar and Battery -Easley SC
Horan Solar and Battery -Easley SC
Horan Solar and Battery -Easley SC
Horan Solar and Battery -Easley SC
Horan Roof Installation 3rd day

+1

18 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for US Energy Solutions, LLC
US Energy Solutions, LLC
4.8(
146
)

Serving Williamston, SC and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Whole house Generator installation was neat and clean and the electricians, Forest and Kevin were personable, professional and did such a great job! Richard did a wonderful job communicating with us. Great Company! We highly recommend them!"
Roof Mounted Solar System
Solar Battery Energy Storage
Solar Battery Energy Storage
Heat Pump
Air Conditioning Unit

+6

Response time10 hrs
Response rate92%
2 neighbors recently requested a quote
Avatar for Homeland Electric LLC
Homeland Electric LLC
5.0(
15
)

Serving Williamston, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"Matthew installed a new sub panel box for us. His work was thorough and fast. The finished job looked great and worked perfectly. He also installed recess lighting for us. Again another job very well done. Not only is he reliable and does a great job but he's also personable and very kine. We highly recommend Matthew with Homeland Electric"
Response time9 hrs
9 neighbors recently requested a quote
Avatar for Surface Bella, LLC
Surface Bella, LLC
3.9(
75
)

Serving Williamston, SC and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Quite honestly, this was not the lowest cost proposal I received for this project. If it wasn't for Ron I would have awarded the work to someone else. But Ron convinced me that there was a price for quality, and that I could trust them to deliver. I made the RIGHT decision. The installation is beautiful. Better than the original roof. When they arrived, they worked non-stop. When the project was complete, they cleaned up better than it was when they arrived. There was never a question on what was included in the price, and the workmanship is exquisite. big 5 stars."
Dangerous steps
Previous deck boards
New Step stringer
New Zuri Deck Boards
New steps completed

+46

Response time3 hrs
Response rate99%
154 neighbors recently requested a quote
Avatar for Avila Electric
Avila Electric
5.0(
23
)

Serving Williamston, SC and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"We were affected by Hurricane Helene and had no power. I was running extensions all throughout my house to my generator and it was an absolute mess. I called Greg seeing if he had availability to hook my generator up to my breaker box and told him my situation and how we had no idea how long this outage would last. Greg wasted no time at all to get over here. He was very professional, punctual, funny, and kind. He had my generator hooked up to my breaker box in less than a hour and it was such a blessing. We ended up going 5-1/2 days with no power and it was so much easier to bear this storm with my 3 young kids thanks to Greg’s work. We will definitely be calling Avila Electric for all of our electrical needs!"
Generator hooked up and powering a house during hurricane season.
Additional Photos
Response time3 days
Recommended by100%of homeowners
Keen Electric, LLC
4.3(
23
)

Serving Williamston, SC and surrounding areas

In business since 2001

Free estimates

Emergency services offered

"I was very impressed with Keen and the crew. As a former remodel contractor (now retired) I know that contractors like Keen are a very rare breed. Honest, reliable and does what he says he will do when he says he will do it. He is the kind of contractor that everyone wants but rarely gets. Yes... I will have him back for a larger project. They started here installing 85' of underground wiring, installed a new panel,new breakers,outlets and a surge protector to cover the entire home and outbuilding. All in Tripple digit temperatures without any delays."
Generator Pad Installation
Automatic Transfer switch
Generator Delivered
Cummins Generator Install
Response time2 days
Recommended by100%of homeowners
Avatar for Corley Plumbing Air Electric Inc
Corley Plumbing Air Electric Inc
4.0(
453
)

Serving Williamston, SC and surrounding areas

In business since 1986

Emergency services offered

"Corley is great when it comes to routine service checks. They always make suggestions of what can be done to improve systems and provide the costs up front. I personally find that to be expensive so I rarely agree to have anything added. I would recommend them for your routine checks!"
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+5

Recommended by77%of homeowners
Showing 1-10 of 37
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

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

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.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

The Williamston, SC homeowners’ guide to generator installs

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