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Avatar for Jernigan Electrical Service Company
Jernigan Electrical Service Company
4.2(
13
)
Fixed Generator - Install

Serving Washington, NC and surrounding areas

Approved

In business since 1985

Free estimates

Warranties offered

"Jernigan Electrical installed an emergency generator for me. Scott Jernigan and his crew did a great job. The worked with me to meet the best schedule possible (given hurricane Florence and delayed gas company hookup) and got it done. Scott and his crew were also very cordial and professional. I would hire them again for any electrical problems."
Response time7 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Golden Group Electric LLC
Golden Group Electric LLC
New to Angi
Fixed Generator - InstallGenerator - Install - For Business

Serving Washington, NC and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

Golden Group Electric LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

Project Photos
35 neighbors recently requested a quote
Genco Electric
4.8(
4
)
Generator - Install - For Business

Serving Washington, NC and surrounding areas

In business since 1999

Free estimates

"We could not be more happy with the service we received from Sam. He added electricity to our 12 x 24 foot shed that we had built in our back yard. He ran electrical lines from our breaker box to the back yard. He installed fluorescent lights and outlets inside our shed and an exterior light to meet code. From the time that I initially contacted him for a quote to the follow-up call we received after he was done, everything was done completely professional and to code. We had received a couple quotes from other electricians and none of them mentioned doing work to code. Sam ensured that we had a zoning permit and that was very reassuring because that meant we knew everything was going to be done by the book. The end project was way above my expectations and we got exactly everything that we wanted, plus the county passed our permit."
Recommended by100%of homeowners
Avatar for Phillip Keith Davis
Phillip Keith Davis
5.0(
4
)
Fixed Generator - InstallFixed Generator - Repair

Serving Washington, NC and surrounding areas

In business since 2000

Credit card accepted

Offers commercial services

"Phillip installed my Tesla Wall Connector and knocked it out. Fair price, showed up on time, great communication, and the work was clean and professional. You can tell he does these regularly. Highly recommend."
1 neighbors recently requested a quote
Avatar for GeneratorTech, Inc.
GeneratorTech, Inc.
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business

Serving Washington, NC and surrounding areas

In business since 2020

Free estimates

Emergency services offered

GeneratorTech, inc is a full service residential and small commercial standby generator systems dealer. We provide sales, installation, and service. Free in home/ business assessment of your power needs can be scheduled Monday through Saturday. We are factory trained and authorized to provide equipment and service to secure years of worry free electrical standby power for your home or small business. BBB accredited business in NC. Serving Johnston and surrounding counties. Fortress generator systems by Briggs & Stratton are the finest on the market today. Built in the USA by a 100+ year old company. Only true 10yr generator available. Reliable and Courteous local family(s) business with Bible based ethics. Local NC licensed B. B. & K Electrical partnered with GeneratorTech or use your preferred contractor to connect your main panel to generator system.

Response time3 hrs
Avatar for Managed Generator Services
Managed Generator Services
New to Angi
Fixed Generator - RepairGenerator - Repair - For Business

Serving Washington, NC and surrounding areas

In business since 2019

Free estimates

Offers commercial services

Managed Generator Services is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.\n\n\n

Response time1 day
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Generator Install questions, answered by experts

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.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

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.

The Washington, NC homeowners’ guide to generator installs

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