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*The Angi rating for Generator Install companies in Williamson, WV is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Williamson, WV is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on September 26, 2025

Find Generator install pros in Williamson

bond your Elec
New to Angi
Portable Generator - Repair

Serving Williamson, WV and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Offers commercial services

We and/or I depending on job scale. Try our best any given day work for the customers, you will get a devoted employee when we are on your time and property and have the knowledge and tools to to any job we take on. If any deviation from initial quote or scope of work You the customer will informed and part of the process to fix such event. We will take all protocol into work preformed and the outcome is always a happy customer..

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POWER AND CLIMATE SOLUTIONS LLC
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Williamson, WV and surrounding areas

Free estimates

Credit card accepted

Offers commercial services

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's custom needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

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C&D electrical LLC Scrap metal and Trash Hauling
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Williamson, WV and surrounding areas

In business since 2021

Free estimates

Credit card accepted

We have 17 years of experience. C&D Electrical LLC Scrap metal and Trash Hauling. We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

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AJ&J's Electric & On-Site Welding
New to Angi
Fixed Generator - RepairGenerator - Repair - For BusinessPortable Generator - Repair

Serving Williamson, WV and surrounding areas

In business since 1994

Free estimates

AJ&J's Electric & On-Site Welding is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 25 years of experience serving Mullens, WV and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

Response time10 mins
Response rate100%
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LCN Electrical Services LLC dba Premier Power Solutions
New to Angi
Fixed Generator - RepairGenerator - Repair - For BusinessPortable Generator - Repair

Serving Williamson, WV and surrounding areas

In business since 2008

Free estimates

Credit card accepted

LCN Electrical Services, LLC offers residential & commercial electrical services to Charleston and surrounding areas. Our certified journeyman electricians are fully insured and licensed and can handle any electrical problem you may have. With more than 18 years of experience, our commitment to excellence has earned us the reputation of the area's electrical specialists.

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Generator Install questions, answered by experts

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

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.

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.

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.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The Williamson, WV homeowners’ guide to generator installs

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

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