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TRUSTED BY GREENVILLE, DE HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon16
    Verified generator installs reviews

Top-Rated Generator install pros in Greenville - Updated Nov 2026

Avatar for Princeton Electrical Makeover LLC
Princeton Electrical Makeover LLC
4.5(
210
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Greenville, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"Brian was awesome and fast and courteous. Princeton Electrical was easy to communicate and negotiate with, and offers a fair price for their labor. Had a Level 2 EV charger installed from my townhouse basement to my garage in a few hours without problems."
Tesla in charging status
Wiring Tesla Wall Connector
Full installation
Connection in the panel
Additional Photos

+26

Response time2 days
22 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for BAY LINE CONSTRUCTION, LLC
BAY LINE CONSTRUCTION, LLC
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Greenville, DE and surrounding areas

Approved

In business since 2020

Free estimates

Offers commercial services

"Bay Line Construction did an excellent job installing my EV charger. The crew was professional, efficient, and the work was clean and high quality. They communicated well throughout the process and made everything easy. I highly recommend Bay Line Construction for any electrical work."
project photos
12 neighbors recently requested a quote
Avatar for Harris Plumbing, Heating, Air & Electrical
Harris Plumbing, Heating, Air & Electrical
3.9(
54
)
Fixed Generator - InstallFixed Generator - Repair

Serving Greenville, DE and surrounding areas

Approved

In business since 1988

Credit card accepted

Customers say: Quick response

"Arrived right on time and reviewed all my electrical needs then went to purchase lightbulbs for me and installed three lighting units instead of just two. I am very impressed with Harris’s services."
Team
Team
Team
Truck
Truck

+8

Response time1 day
432 neighbors recently requested a quote
Recommended by26%of homeowners
Lockhart Construction, LLC
4.1(
57
)
Portable Generator - Repair

Serving Greenville, DE and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

"I hired Lockhart Construction to address 2 issues with my home - a minor HVAC fix and installation of a crawlspace ventilation system. I couldn t be happier with the work and the price was very fair. Conversations with Jim and his team are very easy and he does quality, honest work. Highly recommend for any projects you need to complete."
Response time2 hrs
Recommended by96%of homeowners
Avatar for Horizon Services, LLC (DE)
Horizon Services, LLC (DE)
3.8(
1,298
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Greenville, DE and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Experience The Horizon Difference. \n \nOn-Time Service. Up-Front Pricing. And The Job Done Right and Clean the First Time. GUARANTEED! \n \nHorizon Services is the region's largest and most well respected plumbing, heating and air conditioning company, with nearly 600 employees serving tens of thousands of homeowners throughout Delaware, Southeastern Pennsylvania, Southern New Jersey, and Northeastern Maryland. After a quarter of a century in business, Horizons Services remains fully committed to setting the industry standard for customer service, installation, and focusing on things that are important to busy homeowners: respect for their time, their home and their property; up-front pricing, and an unconditional 100% money back guarantee. \n

Recommended by89%of homeowners
Avatar for Simmz Electrical
Simmz Electrical
5.0(
1
)
Portable Generator - Repair

Serving Greenville, DE and surrounding areas

Approved

Emergency services offered

Small jobs welcome

"Joe from Simmz Electrical was very skilled, charged a fair price and was great to work with. He did a wonderful job, worked very carefully and was very neat. He communicated with us quickly; is very reliable and prompt. We felt comfortable with him in our home; he is now our go to guy for anything electrical. Lucky find"
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Generator Install FAQs, answered by experts

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.

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

If you’re wondering if you can use your electric vehicle as a backup battery, it depends on whether your EV is compatible with bidirectional charging. This technology allows energy to flow both ways, enabling vehicle-to-home (V2H) backup power, vehicle-to-load (V2L) for appliances and camping, and vehicle-to-grid (V2G) to support the power grid. Compatible EVs convert stored DC energy into usable AC power, helping reduce energy costs and enhance grid stability while providing emergency backup power.

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

The Greenville, DE homeowners’ guide to generator installs

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