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-two 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.
Eatontown, NJ
17 kW on a 100-Amp Service in Eatontown, NJ
Client since June 2021
Andrea from Eatontown, NJ has been a Green Sun Energy Services client since June of 2021. The generator was commissioned a year later, in June of 2022: a Generac Guardian rated 17 kW on natural gas, on a 100-amp service-entrance…
From start to finish, Green Sun Energy was reliable, professional, and such a pleasure to work with. The thought of purchasing and installing a generator was very overwhelming to us, but the team at Green Sun made the entire process smooth and easy to understand,…
Allentown, NJ
22 kW Whole-House Backup in Allentown, NJ
Client since August 2020
Wendy from Allentown, NJ has been a Green Sun Energy Services client since August of 2020. The generator was commissioned that September, a month after the paperwork: a Generac Guardian rated 19.5 kW on natural gas, outdoors beside the meter,…
Green Sun is truly outstanding! They are very caring professionals who go the extra mile in planning, installing and servicing generators. Glenn's detailed estimate is an example of thoroughness and transparency. Every aspect of our experience has been flawless. We highly recommend you…
Cranford, NJ
20 kW Whole-House Backup in Cranford, NJ
Client since September 2018
Mary from Cranford, NJ has been a Green Sun Energy Services client since September of 2018. The generator was commissioned in February of 2019: a Generac Guardian rated 18 kW on natural gas, outdoors beside the meter, with a 100-amp…
Everything went as planned - we are extremely happy with the process from start to finish. Every step was scheduled and on time. We were kept informed throughout the entire process which made everything go so smooth from the permits, installation and final testing with…
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. That autumn brought three crews. The roof went first: two layers off, 2,500 square feet of Pewter Gray GAF Timberline HDZ on in a…
Great! Glen and the team took care of every detail with efficiency and professionalism.
Tinton Falls, NJ
Generator, Solar, EV Charger and Holiday Lighting in Tinton Falls, NJ | Four Trades, Five Years
Client since August 2020
Elizabeth from Tinton Falls, NJ has been a Green Sun Energy Services client since August of 2020. The generator came first, a 16 kW Generac with a 200-amp switch, surge protection and two management modules, running by January. A home…
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…
Middletown, NJ
Generac Generator Installation in Middletown, NJ – Whole-Home Standby Power
Client since June 2025
John from Middletown, NJ became a Green Sun Energy Services client in June of 2025, and that September we completed a Generac standby generator installation at his home. The generator watches the utility supply and starts automatically within seconds of…
It was a pleasure having Greensun install my new generator. They are very knowledgeable and was able to solve any issues easily and quickly we had along the way. Jenn made sure I was taken care of even after the install was completed. Thank you…
Lincroft, NJ
Generac Generator & 15.1 kW Solar Panel Installation in Lincroft, NJ – Backup Power and Clean Energy
Client since November 2023
Barry from Lincroft, NJ has been a Green Sun Energy Services client since November of 2023. That December we installed a Generac standby generator for him and Deborah, so the house keeps running through storms and outages. The following March…
5-Star Review, No Comments.
Atlantic Highlands, NJ
Solar, a Generator and a Charger in Atlantic Highlands
Client since February 2022
William and Corinne from Atlantic Highlands, NJ have been Green Sun Energy Services clients since February of 2022, and took on all three projects inside seven months. The generator came first, in May: 19.5 kW on natural gas with a…
Neptune, NJ
16 kW Whole-House Backup in Neptune, NJ
Client since October 2020
Adela from Neptune, NJ has been a Green Sun Energy Services client since October of 2020. The generator was commissioned in April of 2021: a 16 kW Generac Guardian on natural gas, outdoors beside the meter, with a 100-amp service-entrance…
Leonardo, NJ
22 kW Whole-House Backup in Leonardo, NJ
Client since December 2024
Joanne and Howard from Leonardo, NJ have been Green Sun Energy Services clients since December of 2024. The generator was commissioned in March of 2025: a Generac Guardian rated 22 kW on natural gas, outdoors beside the meter, with a…
Monmouth Junction, NJ
16.79 kW of Solar and a 16 kW Generator in Monmouth Junction
Client since September 2018
Ashraf from Monmouth Junction, NJ has been a Green Sun Energy Services client since September of 2018, and booked both projects on the same day. The array was finished that November: 46 LG NeON R panels making 16.79 kW into…
Lincroft, NJ
Solar in 2023, a 22 kW Generator in 2024, Lincroft NJ
Client since December 2022
Alexandra from Lincroft, NJ has been a Green Sun Energy Services client since December of 2022. The solar went up first, finished in March of 2023: 20 REC N-Peak 2 panels making 7.30 kW with a SolarEdge HD Wave inverter…
Farmingdale, NJ
18 kW Standby Backup in Farmingdale, NJ
Client since September 2024
Epifanio from Farmingdale, NJ has been a Green Sun Energy Services client since September of 2024. The generator was commissioned that November: a Generac Guardian rated 17 kW on natural gas, outdoors beside the meter, with a 150-amp service-entrance transfer…
Little Silver, New Jersey
18 kW Whole-House Standby in Little Silver
Client since March 2026
Thomas from Little Silver, NJ has been a Green Sun Energy Services client since March of 2026. We installed an 18 kW Generac in May, making 17 kW on natural gas and switching the whole house through a 200-amp service-entrance…
Springfield, NJ
22 kW Standby for a Two-Sump House in Springfield
Client since October 2025
Fabio from Springfield, NJ has been a Green Sun Energy Services client since October of 2025. We installed a Generac Guardian in August of 2026, rated 22 kW on propane and 19.5 kW on the natural gas it runs on…
Hazlet, NJ
Standby Generator Service in Hazlet, NJ | 10 kW Essential-Circuits Backup
Client since July 2019
Rich from Hazlet, NJ has been a Green Sun Energy Services client since July of 2019. The 10 kW standby generator at the house was installed by another company in September of 2013, and Rich moved its servicing to us…
Waretown, NJ
Generac 20 kW Standby Generator in Waretown, NJ | Electric Dryer and Oven Covered
Client since February 2014
Bonnie from Waretown, NJ has been a Green Sun Energy Services client since February of 2014. She and Kenny signed in February and the generator was commissioned in the first week of June, a 20 kW Generac behind a 200-amp…
Farmingdale, NJ
Generac 14 kW Standby Generator in Farmingdale, NJ | 200-Amp Switch, Two Load Modules
Client since June 2013
Sophie from Farmingdale, NJ has been a Green Sun Energy Services client since June of 2013. She signed in the middle of June and the generator was commissioned in the first week of September, a 14 kW Generac on its…
Farmingdale, NJ
Generac 14 kW Standby Generator in Farmingdale, NJ | Maintained Since 2012
Client since December 2012
Anthony from Farmingdale, NJ has been a Green Sun Energy Services client since December of 2012. He signed on New Year Eve and the generator was commissioned in June, a 14 kW Generac behind a service-rated automatic transfer switch covering…
Farmingdale, NJ
Generac 8 kW Standby Generator in Farmingdale, NJ | Sized to the Essentials
Client since January 2013
Joe from Farmingdale, NJ has been a Green Sun Energy Services client since January of 2013. He and Kathleen signed in mid January and the generator was commissioned in late May, an 8 kW Generac on a ten-circuit EZ switch.…
Farmingdale, NJ
Generac 14 kW Standby Generator in Farmingdale, NJ | Kitchen and Laundry Covered
Client since December 2012
Jay from Farmingdale, NJ has been a Green Sun Energy Services client since December of 2012. He and Irene signed in mid December and the generator was commissioned at the end of April, a 14 kW Generac behind a service-rated…
Farmingdale, NJ
Generac 20 kW Standby Generator in Farmingdale, NJ | Two Ovens, Two Refrigerators
Client since December 2012
Richard from Farmingdale, NJ has been a Green Sun Energy Services client since December of 2012. He signed in mid December and the generator was commissioned at the start of May, a 20 kW Generac behind a 200-amp service-rated transfer…
Farmingdale, NJ
Generac 14 kW Standby Generator in Farmingdale, NJ | 2,140 Sq. Ft. Covered
Client since December 2012
Loren from Farmingdale, NJ has been a Green Sun Energy Services client since December of 2012. He and Marie signed in the middle of December and the generator was commissioned in May, a 14 kW Generac behind a service-rated automatic…
Farmingdale, NJ
Generac 20 kW Standby Generator in Farmingdale, NJ | 2,600 Sq. Ft., Running in Nine Weeks
Client since September 2013
Frank from Farmingdale, NJ has been a Green Sun Energy Services client since September of 2013. He signed in early September and the generator was commissioned in the middle of November, a 20 kW Generac on its own pad behind…
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