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Avatar for Greens Electrical
Greens Electrical
5.0(
25
)

Serving Duncan, 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 *****!!"
Additional Photos
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+1

Response time1 day
7 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Mr. Electric of Greer
Mr. Electric of Greer
4.9(
15
)

Serving Duncan, SC and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"We were looking to have a generator installed, having several quotes already cody from mr electric came and walked me thru all my options getting me the best price with a better generator I also had my main panel replaced since it was original to our home. They did the job perfect cleaned up everything and weà  à ¢à  à  à  à  ve never been happier with their overall service 5 stars!"
Whole Home Generator
Kitchen remodel
Parking lot lighting
Panel install
Response time2 days
13 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for U.S. Energy Solutions
U.S. Energy Solutions
4.7(
74
)

Serving Duncan, 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

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

Serving Duncan, 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%
1 neighbors recently requested a quote
Avatar for Surge Electrical Contractor, LLC
Surge Electrical Contractor, LLC
4.7(
19
)

Serving Duncan, SC and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"Serge and Reuben were very kind and professional. They showed up on time, managed the permits and inspections in record time. AND got the power company in my area on board in record time also! This in the middle of storm damage all over our town! When there were some issues with wiring (as there always is in a house built initially in 1940 and added to in no apparent plan, quirky but cool!) Serge explained them to me and we came up with a plan and though he could have, didn't charge me for the extra effort. We discussed some future projects as the remodel goes forward and he ran wires for them so it will be a go when we get there. I couldn't have asked for better service, better communication, better replacement equipment and better understanding when I wanted to change things on the fly. He will be my go to guy for all future projects and I would recommend him highly and plan to with everyone I know. He does commercial and residential and is truly a part of the pro family now"
Response time6 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Just Electric, LLC
Just Electric, LLC
4.6(
21
)

Serving Duncan, SC and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"What a joy it is to recommend Pete and â  Just Electricâ  . To folks in need of electrical work and want reliable service! I needed a new light fixture installed as well as an inoperative wall switch. One call to Pete and he had a great team at my house working in no time. Job done quickly and to my wifeâ  s liking! Thanks Pete and your technicians! I recommend â  Just Electricâ  for any project!"
Response time6 hrs
Response rate85%
6 neighbors recently requested a quote
Avatar for Cerberus Electrical, LLC
Cerberus Electrical, LLC
5.0(
47
)

Serving Duncan, SC and surrounding areas

Approved

In business since 2022

Small jobs welcome

Credit card accepted

"Kevin did an excellent job! We hired him to install (3) bathroom exhaust fans, vent 2 upstairs properly to the outside soffit and install (2) recessed outlets in our den. On time, excellent communication, cleaned up after the job was complete and a fair price / value for the job. I would highly recommend Kevin if you need an electrician at your house. Thanks, John C."
Response time4 hrs
Response rate93%
Recommended by79%of homeowners
Avatar for Homeland Electric LLC
Homeland Electric LLC
5.0(
15
)

Serving Duncan, 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
5 neighbors recently requested a quote
Avatar for VoltX Electrical
VoltX Electrical
5.0(
6
)

Serving Duncan, SC and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Offers commercial services

"VoltX is the premier electrical service provider in our area. I have worked with Andrew of VoltX for some time now and the work they do is nothing short of exceptional. From wiring my outdoor area at my home, to my business, to my complete home generator, each time has been a pleasure and I will continue to use their services in the future, as I have dozens of times in the past! If you re looking for electrical.. Call these guys!"
Mid install
Response time2 days
2 neighbors recently requested a quote
Showing 1-10 of 50

FAQs for generator install projects in Duncan, SC

When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.

Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:

  • Portable generators with 1kW–7.5kW capacity: $500–$2,000

  • Partial generators with 9kW–20kW capacity: $2,000–$6,300

  • Whole-house generators with 22kW–48kW: $5,000–$18,000

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. 

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:

  • Experience frequent or prolonged power outages

  • Work from home

  • Store a lot of cold food

  • Have a sump pump

  • Have a pump for well water

  • Use electronic medical devices

  • Live in a climate requiring heating or cooling

The Duncan, SC homeowners’ guide to generator installs

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