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Avatar for Greens Electrical
Greens Electrical
5.0(
25
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Mauldin, 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
9 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for U.S. Energy Solutions
U.S. Energy Solutions
4.7(
74
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Mauldin, SC and surrounding areas

Approved

In business since 2015

Warranties offered

Credit card accepted

"These guys did a great job! I was called within 1 minute of requesting quotes for this job. I was given a reasonable quote promptly. Within a few days the unit was installed and is working wonderfully. I have to point out the technician that did the install. Josh was courteous and professional at all times. He stayed in contact with me thru the whole process. I would absolutely recommend this company and will to any of my neighbors that have such needs."
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

20 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Mr. Electric
Mr. Electric
4.8(
61
)
Fixed Generator - Install

Serving Mauldin, SC and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"Parks did a great job. Got there very quickly, did the work for a reasonable fee, and was a wonderful young man to deal with. Highly recommend him!"
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Switches
EV Charger

+13

Response time4 hrs
Response rate100%
37 neighbors recently requested a quote
Avatar for Surge Electrical Contractor, LLC
Surge Electrical Contractor, LLC
4.7(
19
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Mauldin, 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 Homeland Electric LLC
Homeland Electric LLC
5.0(
15
)
Portable Generator - Install

Serving Mauldin, 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
8 neighbors recently requested a quote
Avatar for Geter Electrical Services
Geter Electrical Services
5.0(
3
)
Fixed Generator - Install

Serving Mauldin, SC and surrounding areas

Approved

In business since 2020

Free estimates

Small jobs welcome

"My initial inquiry was quickly responded to by the business owner. We discussed the problem, and he provided good advice. Based on that I hired him and scheduled the visit. Everything went smoothly and the work was completed to my satisfaction. I would hire DJ Geter again and refer him to anyone who asks me who my electrician is."
Response time12 hrs
Response rate88%
8 neighbors recently requested a quote
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Generator Install questions, answered by experts

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.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

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

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.

The Mauldin, SC homeowners’ guide to generator installs

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