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Avatar for Lattanzio Electrical Contracting, Inc.
Lattanzio Electrical Contracting, Inc.
4.7(
137
)
Portable Generator - Install

Serving New Castle, DE and surrounding areas

Approved

In business since 2003

Emergency services offered

Warranties offered

"Stephen communicated with me from start to finish and completed the job perfectly, and with precision! Including testing with my generator to provide instruction on usage and verified everything worked as expected!"
total rewire
total rewire
total rewire
Running underground wire on a horse farm
Runing underground wire on a horse farm

+9

Response time7 hrs
Response rate93%
1 neighbors recently requested a quote
Avatar for Princeton Electrical Makeover LLC
Princeton Electrical Makeover LLC
4.5(
208
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving New Castle, 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
24 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Elite Electric Solutions LLC
Elite Electric Solutions LLC
5.0(
6
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving New Castle, DE and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

"Had two EV charging stations installed at my home in Middletown and I’m very happy with the work. Everything came out super clean and professional. He explained the entire process clearly and walked me through everything step by step. I got a few prices before hiring him and he was also the most affordable. Great work, great communication and fair pricing. I would definitely recommend Elite Electric Solutions. Definitely getting him back in for some recessed lighting and routing some wires for my audio and camera system. Jorge is definitely my electric from now on!"
24 neighbors recently requested a quote
Avatar for BAY LINE CONSTRUCTION, LLC
BAY LINE CONSTRUCTION, LLC
5.0(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving New Castle, 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
16 neighbors recently requested a quote
Independent Power and Solar LLC
5.0(
2
)
Portable Generator - RepairFixed Generator - RepairGenerator - Repair - For Business

Serving New Castle, DE and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

#1 Customer satisfaction is what determines our success, which is why we take a hands-on approach. You'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your project needs. Contact us today for a fair and accurate estimate of your project. We look forward to adding you to our long and growing list of happy customers.\n

8 neighbors recently requested a quote
Recommended by100%of homeowners
Lockhart Construction, LLC
4.1(
57
)
Portable Generator - Repair

Serving New Castle, 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 Harris Plumbing, Heating, Air & Electrical
Harris Plumbing, Heating, Air & Electrical
3.9(
49
)
Fixed Generator - InstallFixed Generator - Repair

Serving New Castle, DE and surrounding areas

Approved

In business since 1988

Credit card accepted

Customers say: Quick response

"Woke up with no heat! Right before Christmas! Harris responded instantly and sent out someone to check the problem. Due to incorrect installation, rain had gotten into the improperly sealed roof vents, which in turned fried the transformer, inducer and circuit board. They were at my place bright and early the next morning installing a brand new furnace, more efficient and quieter, with a 10 year warranty. Arranged financing and were finished by 3pm. Everyone from my first phone call to the last service tech was professional, polite, knowledgeable and all around pleasant and really nice people. They will be my go to for heating, AC, plumbing and electrical from here on in. Glad I found them!"
Team
Team
Team
Truck
Truck

+8

Response time1 day
389 neighbors recently requested a quote
Recommended by29%of homeowners
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Generator Install questions, answered by experts

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. 

Many services include assembling the unit and securing it in the window. Confirm with your provider.

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 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.

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

The New Castle, DE homeowners’ guide to generator installs

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