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Alternative Electrical Services
4.3(
3
)
Portable Generator - Install

Serving Kingston, TN and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Doug is reliable.. when he says he will be there.. he is... when he gives you an estimate it's more then fair and very close to what he thought it would be. He knows his stuff and he is very personable too. You don't get that with many trades people. I would hire him again and would recommend him highly to everyone I know"
Response time2 days
Recommended by100%of homeowners
Avatar for Premier Generators
Premier Generators
New to Angi
Fixed Generator - Install

Serving Kingston, TN and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

Premier Generators has helped homeowners and businesses across the Southeast protect what matters with reliable Generac home standby generators for over 30 years.\n\nWhen power goes out, your generator is designed to start automatically and restore power within seconds, helping keep your home or business running smoothly. We start by learning what matters most on your property, then guide you through a clear process: right-sized recommendations, permitting, installation, and complete start-up and testing.\n\nOur relationship does not end at installation. We provide service and maintenance to help your system stay ready, including routine inspections, preventive maintenance, and repairs. Ask about maintenance plans and support options, plus warranty coverage that can extend up to 10 years.\n\nWhether you’re protecting a whole home or a commercial site, we’ll help you choose the right solution for your needs and leave you feeling confident, informed, and prepared long before the next outage.

138 neighbors recently requested a quote
Harman Industries Inc.
New to Angi
Portable Generator - Repair

Serving Kingston, TN and surrounding areas

Approved

Harman Industries Inc. – Quality Electrical Work Done Right\n\nHarman Industries Inc. provides reliable residential and light commercial electrical services with a focus on safety, efficiency, and honest pricing. We specialize in troubleshooting, panel upgrades, service work, lighting installation, and new construction or remodel wiring.\n\nFrom small repairs to full electrical upgrades, every job is completed with attention to detail and clear communication—done right the first time.\n\nServices:\n• Troubleshooting & repairs\n• Panel upgrades\n• Temporary power setups\n• Lighting installation\n• Service calls\n• New construction & remodels\n\nDependable service you can trust. Contact today for a free estimate.

Avatar for Hiller Plumbing, Heating, Cooling, & Electrical
Hiller Plumbing, Heating, Cooling, & Electrical
New to Angi
Fixed Generator - InstallFixed Generator - Repair

Serving Kingston, TN and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Credit card accepted

Hiller Plumbing, Heating, Cooling, & Electrical, established in 1990, stands for quality and reliability. With our 'Happy You'll Be or the Service is Free' guarantee, we are dedicated to customer satisfaction in Murfreesboro and the surrounding communities. Our plumbers provide emergency repairs, sewer line service, and expert installation or repair of water heaters. Our HVAC specialists ensure your comfort with preventative maintenance, air conditioning and furnace repairs, for year-round comfort. Our licensed and insured electricians offer prompt emergency response, custom upgrades, and safe, thorough electrical fixes for both residential and commercial properties. Hiller is your trusted provider for all your home service needs.

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+9

8 neighbors recently requested a quote
Avatar for NEC
NEC
5.0(
12
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Kingston, TN and surrounding areas

In business since 2020

Free estimates

Emergency services offered

"NEC is very knowledgeable in all aspects of electrical work. Whole home generator install was a breeze. NEC is fast, friendly, and affordable. A veteran owned business backed by union training and quality, couldn't have asked for a better company to provide the service we needed."
Recommended by100%of homeowners
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Generator Install questions, answered by experts

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Potential benefits of using a natural gas generator include reducing your carbon footprint, lower likelihood of carbon monoxide exposure, budget-friendly operating costs, and low-maintenance, continuous fuel supply. Some possible drawbacks, though, include higher initial installation costs, dependency on a natural gas supply, and installation complexity. Keep in mind that pros and cons will vary based on the type and brand of natural gas generator. 

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.

The Kingston, TN homeowners’ guide to generator installs

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