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Avatar for Green Sun Energy Services, LLC
Green Sun Energy Services, LLC
5.0(
73
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Interlaken, NJ and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"A wonderful experience for a complicated project! I would use Green Sun Energy again for any service they provide. They made the generator install as easy and painless as possible. The crew was kind and efficient. Lots to do for an install such as this but they did it quickly, efficiently and were extremely organized. Just how I like it! Thank you so much!! We feel protected for whatever comes our way."
Ruisi
Oceanport
Additional Photos
Additional Photos
Additional Photos

+55

Response time5 days
Response rate100%
5 neighbors recently requested a quote
Avatar for Kingdom Electric
Kingdom Electric
4.7(
257
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Interlaken, NJ and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"The initial estimate was very reasonable. Nick showed up, on time, and got right to work relocating several ceiling fans, installing new light fixtures, rewiring outlets, and adding a new outlet. In the end, we were billed less than the original estimate because Nick determined there was a less expensive way to perform some of these services and did not charge us the extra costs. We will definitely be calling Kingdom Electric for any future services we need."
Additional Photos
Response time11 hrs
8 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Watts Good Electric
Watts Good Electric
4.9(
48
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Interlaken, NJ and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"These guys are great - had a couple of issues and they immediately helped without question; including come to change a manufacturer's defect long after the job was completed at no additional charge. I will be hiring them for any future electrical projects and recommend you do the same!"
Chandelier Installation
Vineyard Vines
Vineyard Vines
Vineyard Vines
Vineyard Vines

+19

Response time8 hrs
Response rate88%
Recommended by97%of homeowners
Avatar for Revolution Electric LLC
Revolution Electric LLC
4.8(
34
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Interlaken, NJ and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

"They did a great job with my electrical panel which had issues when I bought my home. Had other miscellaneous stuff that needed to be done as well. They were timely, respectful, did the job and went above and beyond, were licensed, truthful, age the cost was very reasonable. I would fully recommend them."
Kitchen
Cooktop Wall
Kitchen
Basement Bar
Exterior New Home

+25

Response time6 hrs
Response rate100%
5 neighbors recently requested a quote
Avatar for ILL Electrical Services
ILL Electrical Services
5.0(
10
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+2 more

Serving Interlaken, NJ and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Renaldo was professional, came on time and did a great job. He installed 2 ceiling fans , installed multiple gfi outlets and upgraded wiring to the panel box. Wonderful service! He thoroughly explained the job and I will definitely call him again."
100 amp meter replacement
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+3

Response time7 hrs
Response rate91%
7 neighbors recently requested a quote
Avatar for A Shore Thing Electric, LLC
A Shore Thing Electric, LLC
4.7(
51
)
Portable Generator - Install

Serving Interlaken, NJ and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"Mike was fantastic! The price for installation of recessed lighting was very fair. Mike took the time to go over what I wanted, gave me his feed back and was very professional. I was absolutely thrilled when the installation was complete. I would recommend A Shore Thing Electric to everyone I know. I would tell anyone looking to hire an electrician to call Mike first!!!!"
Pharmecutical Cage Panel
Panel Change
125 Amp Panel
Tesla S/X/3 Car Charger
Remote Controlled Ceiling Fan

+22

Response time1 day
5 neighbors recently requested a quote
Recommended by93%of homeowners
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Generator Install questions, answered by experts

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

The Interlaken, NJ homeowners’ guide to generator installs

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