Standby generator work makes up the largest part of our portfolio, and this page covers both halves of it: whole-home generators we installed from scratch, and machines other companies installed that customers later brought to us to look after. Sizes run from eight kilowatts on a dedicated essential-circuits switch up to twenty-eight kilowatt units carrying an entire house through an outage.
What sets these projects apart is the load survey behind each one. Square footage alone does not size a generator — a well pump means no water at all when the power fails, a sump pump is the difference between a dry basement and a flooded one, and electric ovens or dryers draw several times what their gas equivalents do. The sizing on every install here was worked out from what that particular house actually has to run.
Many of these accounts also show years of annual generator service: oil and filters, plugs, battery, fuel plenum inspection and a load test that proves the transfer switch really hands over. Filter by town or year to browse the work. The standby generator services page covers sizing, installation and maintenance plans in detail.
Chesterfield, NJ
Solar Panel Installation and Standby Generator Installation in Chesterfield, NJ | 15.18 kW and 22 kW
Client since July 2024
Joe from Chesterfield, NJ has been a Green Sun Energy Services client since July of 2024. A 22 kW standby generator and a 15.18 kW array were bought on the same day and finished six days apart that September.
Can't say enough nice things about Green Sun. They took care of every little detail, answered every silly question and arranged everything. Had a big solar array installed and a Generac. I got multiple quotes and whilst they weren't the lowest price they were very…
Middletown, NJ
Standby Generator, Roofing and Soft Washing in Middletown, NJ | A Generator First, Two Jobs Seven Years Later
Client since July 2019
Ed from Middletown, NJ has been a Green Sun Energy Services client since July of 2019 - a generator first, and then, seven years later, two jobs on the outside of the house eight weeks apart.
Middletown, NJ
Solar, Generator and EV Charger in Middletown, NJ | Our Owner Is Client Number One
Client since April 2011
Glen from Middletown, NJ has been a Green Sun Energy Services client since April of 2011, which makes him the first name in this portfolio. He owns the company, and his own roof was the first we ever worked on.…
Middletown, NJ
Roof, Solar, Generator and Seasonal Services in Middletown, NJ | Six Projects Since 2019
Client since August 2019
Judith from Middletown, NJ has been a Green Sun Energy Services client since August of 2019. Three contracts were signed on the same day that August and three crews came through before the year was out; she has been back…
Great! Glen and the team took care of every detail with efficiency and professionalism.
Middletown, NJ
Solar, Generator and Soft Washing in Middletown, NJ | 20.48 kW Array, 22 kW Backup
Client since November 2018
Subhek from Middletown, NJ has been a Green Sun Energy Services client since November of 2018, and the house is large in every direction that matters here: 5,500 square feet, a 400-amp service, and an exterior that takes nearly twelve…
Everything went as planned. We would highly recommend Green Sun Energy Services.
Tinton Falls, NJ
Generator, Solar, EV Charger and Holiday Lighting in Tinton Falls, NJ | Four Trades, Client Since 2020
Client since August 2020
Elizabeth from Tinton Falls, NJ has been a Green Sun Energy Services client since August of 2020. Four trades in five years, and they arrived in the reverse of the usual order - the generator first and the array last,…
I couldn’t be happier with the services Green Sun Energy provides. They did such a great job installing our generator, after getting an electric vehicle I decided to have them install an EV charger in my garage. It’s been amazing! And Glen and his team…
Farmingdale, NJ
Generac 22 kW Generator and Holiday Lighting in Farmingdale, NJ | Two Jobs in 2024
Client since July 2024
Eileen from Farmingdale, NJ has been a Green Sun Energy Services client since July of 2024, and both jobs on this page were finished within six weeks of each other that fall.
Oceanport, NJ
Solar, Generator and Holiday Lighting in Oceanport, NJ | A Client Since 2012
Client since October 2012
Bruno from Oceanport, NJ has been a Green Sun Energy Services client since October of 2012, which makes this one of the oldest relationships on the site. The array and the generator went in within four months of each other;…
Green Sun Energy is a Class A outfit. I did my research before taking the plunge, and nothing else even compared. They are detail oriented, and do an excellent job (I am VERY picky). No complaints. Executed as promised. Job done right. Highly recommend." - Bruno M.…
Middletown, NJ
Standby Generator Installation in Middletown, NJ | A 22 kW Generac on a 150-Amp Switch
Client since September 2020
Victor and Risa from Middletown, NJ have been Green Sun Energy Services clients since September of 2020. The machine is a Generac 7042-2 rated 22 kW on propane and 19.5 kW on natural gas, running on natural gas, on a…
Excellent and professionally installed, respectful of homeowners property and priorities.
Holmdel, NJ
Soft Washing in Holmdel, NJ | Stucco exterior, columns, driveway, and pool deck
Client since October 2020
Green Sun Energy Services soft washed the exterior of this Holmdel home, which is finished in stucco. The cleaning solution was a sodium hypochlorite and surfactant mixture applied with an extended dwell time and kept wet throughout the process, which…
John and Auston were a stellar team, their attention to detail was amazing. Thank you!
Red Bank, NJ
Standby Generator Installation in Red Bank, NJ | A 22 kW Generac for a 5,500-Square-Foot Home
Client since December 2019
Cathy from Red Bank, NJ has been a Green Sun Energy Services client since December of 2019. The machine is a Generac 7043-2 rated 22 kW on propane and 19.5 kW on natural gas, running on natural gas, on a…
The scheduling and installation of my full house generator by Green Sun Energy was flawless and almost immediately proved to be invaluable with a 4 day blackout. Glen, Karen and their team could not have been more professional, informative and punctual. After consulting with a…
Dayton, NJ
Standby Generator Installation in Dayton, NJ | An 11 kW Generac on a 100-Amp Switch
Client since July 2018
Helena from Dayton, NJ has been a Green Sun Energy Services client since July of 2018. The machine is a Generac 7032-1 rated 11 kW on propane and 10 kW on natural gas, running on natural gas, on a 100-amp…
Great price, excellent service!
Millstone Township, NJ
Standby Generator Installation in Millstone Township, NJ | A 26 kW Generac on a 300-Amp Switch
Client since November 2023
Mathew from Millstone Township, NJ has been a Green Sun Energy Services client since November of 2023. The machine is a Generac 7290 rated 26 kW on propane and 22.5 kW on natural gas, running on natural gas, on a…
Glen and his team at Green Sun provided us with a great whole-house generator and an even better experience. They recommended the right equipment to meet our needs and handled all the details including permits, delivery, installation, inspections, and teaching us how everything works. It’s…
Hazlet, NJ
8 kW Standby Generator Installation in Hazlet, NJ | An Essential-Circuits Machine on a 50-Amp Switch
Client since October 2013
Maryann and Robert from Hazlet, NJ have been Green Sun Energy Services clients since October of 2013. A Generac rated 8 kW on propane and 7 kW on natural gas went in that January, running on natural gas behind a…
Everything went well, the only problem was the weather, it was a bad winter, so everything got delayed with extreme cold temperatures, snow, but other that that they were very professional, always got back to me when I called or e-mailed. I highly recommend them,…
Farmingdale, NJ
16 kW Standby Generator Installation in Farmingdale, NJ | Sized for 1,980 Square Feet on a 200-Amp Switch
Client since October 2014
Alex from Farmingdale, NJ has been a Green Sun Energy Services client since October of 2014. A Generac rated 16 kW went in that January, running on natural gas behind a 200-amp automatic transfer switch, with 1,980 square feet of…
Every step from permits to final check & walk through was flawless. I actually signed the contract with Green Sun Energy for the generator before I closed on my home. Green Sun Energy handled every call and all the paperwork. I could not have been…
Jackson, NJ
16 kW Standby Generator Installation in Jackson, NJ | Sized for 2,550 Square Feet on a 200-Amp Switch
Client since August 2020
Carol from Jackson, NJ has been a Green Sun Energy Services client since August of 2020. A Generac Guardian rated 16 kW went in the following March, running on natural gas behind a 200-amp automatic transfer switch. The load survey…
My husband and I are so thankful we used Green Sun for the installation of our new generator. Every member of the crew from first inquiry to final inspection was exceptional. Everyone was very professional, informative and friendly. The communication was amazing -- every step…
Hazlet, NJ
Standby Generator and Solar Panel Installation in Hazlet, NJ | 16 kW in March, 25 Panels in April
Client since February 2018
Alice and Frank from Hazlet, NJ have been Green Sun Energy Services clients since February of 2018. A 16 kW standby generator and an 8.375 kW array, installed five weeks apart in the spring of that year.
This Company is the Best so Happy with our Generac Generator it has already helped us we had 2 outages & it kicked on in 10 seconds amazing & our Solar Panels well I have to say our Electric Bill has dropped at least 100.…
Morganville, NJ
17 kW Standby Generator Installation in Morganville, NJ | Whole-House Standby With Load Management
Client since October 2025
Jeannie from Morganville, NJ has been a Green Sun Energy Services client since October of 2025. The generator was commissioned in January of 2026, rated 17 kW on natural gas where the load calculation asked for 15 kW. The house…
We purchased a generator last October and it was installed by Green Sun Energy Services. There were a few delays beyond their control (snow, town permits, technical problem with the actual generator), but I was so pleased with the professionalism of everyone I dealt with…
Howell, NJ
22.5 kW Standby Generator Installation in Howell, NJ | A Replacement Machine, and a Double Oven Set the Number
Client since August 2019
Lisa from Howell, NJ has been a Green Sun Energy Services client since August of 2019. The servicing of a standby generator another company had installed came to us that month, and in March of 2024 the machine itself was…
Everything went quite smoothly in terms of the generator installation.
Farmingdale, NJ
Standby Generator Installation in Farmingdale, NJ | A 14 kW Generator Running Since 2013
Client since August 2013
Joanne from Farmingdale, NJ has been a Green Sun Energy Services client since August of 2013, which places them among the oldest relationships on the site. The generator was commissioned that December: 14 kW on natural gas, on a 200-amp…
This job took months to complete and green sun was helpful and in communication throughout.
Farmingdale, NJ
Standby Generator Installation and Solar Panel Installation in Farmingdale, NJ | In 2012 and a Generator in 2013
Client since July 2012
Lon in Farmingdale has been a Green Sun Energy Services client since July of 2012. The array came first and the standby generator followed the next summer.
"It can be confusing listening to all the companies coming after you to go solar. We chose Green Sun because their installations are the best and because they do not promise anything they cannot deliver. It is easy for people to tell you how much…
Middletown, NJ
16 kW Standby Generator Installation in Middletown, NJ | Whole-House Backup
Client since July 2019
Walter from Middletown, NJ has been a Green Sun Energy Services client since July of 2019. The generator was commissioned that September: 16 kW on natural gas, on a 200-amp whole-house transfer switch, sized against a 14 kW calculation for…
The whole project could not have gone any smoother. The sales presentation was concise and informative. Very professional installation process, Green Sun took care of all aspects from municipal approvals to contractor scheduling, Along the way they kept us informed on every single step of…
Middletown, NJ
14 kW Standby Generator Installation in Middletown, NJ | Generac Generator
Client since January 2021
Mike from Middletown, NJ has been a Green Sun Energy Services client since January of 2021. The generator was commissioned that August: 14 kW on natural gas, on a 200-amp service-entrance switch with a smart management module, sized against a…
The best of the best from top office service to service technicians. MK
Red Bank, NJ
22 kW Standby Generator Installation in Red Bank, NJ | Whole-House Backup
Client since August 2021
Jaymie from Red Bank, NJ has been a Green Sun Energy Services client since August of 2021. The generator was commissioned in April of 2022: a Generac Guardian rated 19.5 kW on natural gas, on a 200-amp service-entrance switch with…
After researching multiple different companies to install our generator, we chose Green Sun Energy Services. They were very professional and explained everything step by step! Would highly recommend to anyone who is looking to install a generator. Very pleased with the whole process.