A generator sits quietly for a year and then has to work on the one night it matters. That means the battery, the oil, the weekly test cycle and the transfer switch, all checked before the storm rather than during it. These are New Jersey homes we look after on a maintenance plan, and plenty of the generators on this list were installed by somebody else. Each one names the equipment on site and the town, so what you are reading is work we actually did rather than a list of what a plan covers.

938 completed generator service projects across 142 New Jersey towns, including 165 with a review written by the customer.

Solar Panel Installation and Standby Generator Service in Bridgewater, NJ | 14.875 kW

Karen and Steve from Bridgewater, NJ have been Green Sun Energy Services clients since July of 2025. Two jobs a week apart, one new and one inherited. 14.875 kW of solar: Thirty-five Jinko 425-watt panels on IronRidge rail, finished in October of 2025, with first-year production estimated at 15,119 kWh. At nearly fifteen kilowatts this is a large residential array, and the rail layout is what decides how that weight sits across the roof structure. The generator already at the house: A Generac 7035 rated 16 kW, installed in August of 2020 by another company, feeding a 70-amp transfer switch.

Standby Generator Installation and Standby Generator Service in New Providence, NJ

Standby Generator Installation in New Providence, NJ | A 20 kW Generac on a 200-Amp Switch

John from New Providence, NJ has been a Green Sun Energy Services client since September of 2020. The machine is a Generac 7039-1 rated 20 kW on propane and 18 kW on natural gas, running on natural gas, on a 200-amp transfer switch. It was commissioned in May of 2021. A 200-amp whole-house switch on a house of about 2,800 square feet means the panel transfers exactly as it stands. Green Sun has serviced it in May of 2022, July of 2023, August of 2024 and July of 2025, and it is on remote monitoring in between.

Standby Generator Installation and Standby Generator Service in Ocean, NJ

Standby Generator Installation in Ocean, NJ | A 13 kW Generac on a 150-Amp Switch

Honnie from Ocean, NJ has been a Green Sun Energy Services client since November of 2020. The machine is a Generac 7173 rated 13 kW on natural gas, on a 150-amp transfer switch, and it was commissioned in April of 2021. The house is about 2,079 square feet, which a 13 kW machine carries without difficulty on a whole-house switch. Green Sun has serviced it every year since – March of 2022, March of 2023, February of 2024, January of 2025 and January of 2026 – and it reports to remote monitoring between visits.

22 kW Generac standby generator in Atlantic Highlands, NJ

Standby Generator Service in Atlantic Highlands, NJ | A 22 kW Generac Looked After Since 2019

Cedric from Atlantic Highlands, NJ has been a Green Sun Energy Services client since November of 2019. The Generac 7042 at the house is a 22 kW machine on natural gas, feeding a 100-amp transfer switch. It was put in by another company. Green Sun’s first visit was in November of 2019 and it has looked after the machine since, returning in February of 2022 and January of 2025. Taking on a machine somebody else installed means checking the gas pressure, the transfer switch and the exercise settings against what the manufacturer asks for, rather than assuming the last company

Standby Generator Service in Aberdeen, NJ

16 kW Standby Generator Installation in Aberdeen, NJ | Sized for 1,800 Square Feet on a 200-Amp Switch

Steven from Aberdeen, NJ has been a Green Sun Energy Services client since September of 2020. A Generac Guardian rated 16 kW went in the following July, running on natural gas behind a 200-amp automatic transfer switch, with 1,800 square feet of living space behind it on the load survey. The switch is the decision that matters more than the rating: it is the difference between a generator that runs the house and one that runs a list.

22 kW Generac standby generator in Colts Neck, NJ

22 kW Standby Generator Installation in Colts Neck, NJ | Sized for 3,600 Square Feet on a 200-Amp Switch

Katia from Colts Neck, NJ has been a Green Sun Energy Services client since October of 2020. A Generac Guardian rated 22 kW on propane and 19.5 kW on natural gas went in the following July, running on natural gas behind a 200-amp automatic transfer switch, with 3,600 square feet of living space behind it on the load survey. Nine months between booking and installation is ordinary for a machine this size: the gas work and the township inspection each set their own pace, and the generator waits on both.

Standby Generator Service in Farmingdale, NJ | A 20 kW Generac Brought Onto an Annual Plan

Cindy from Farmingdale, NJ has been a Green Sun Energy Services client since September of 2025. The 20 kW Generac at the house dates from December of 2020 and runs on natural gas behind a 100-amp transfer switch. Green Sun began servicing it that September on a plan covering annual maintenance and an extended parts-and-labor warranty, and has been back twice since – a courtesy visit in January of 2026 and a new battery in April.

22 kW Generac standby generator in Middletown, NJ

22 kW Standby Generator Installation in Middletown, NJ | Sized for 3,200 Square Feet on a 200-Amp Switch

Peter from Middletown, NJ has been a Green Sun Energy Services client since August of 2020. A Generac Guardian rated 22 kW on propane and 19.5 kW on natural gas went in the following January, running on natural gas behind a 200-amp automatic transfer switch, with 3,200 square feet of living space behind it on the load survey. At 22 kW behind a service-sized switch the machine is not carrying a shortlist of circuits, it is carrying the house – which is what the survey found it needed.

18 kW Generac standby generator in Hazlet, NJ

18 kW Standby Generator Installation in Hazlet, NJ | Sized for 1,836 Square Feet on a 200-Amp Switch

James from Hazlet, NJ has been a Green Sun Energy Services client since March of 2021. A Generac Guardian rated 18 kW on propane and 17 kW on natural gas went in that October, running on natural gas behind a 200-amp automatic transfer switch. The load survey put 1,836 square feet of living space behind it, and the 200-amp switch takes the whole service rather than a selected group of circuits – so an outage changes nothing about how the house is used.

18 kW Generac standby generator in Middletown, NJ

18 kW Standby Generator Installation in Middletown, NJ | Sized for 2,223 Square Feet on a 200-Amp Switch

Al from Middletown, NJ has been a Green Sun Energy Services client since June of 2022. A Generac Guardian rated 18 kW on propane and 17 kW on natural gas went in that August, running on natural gas behind a 200-amp automatic transfer switch, with 2,223 square feet of living space behind it on the load survey. The switch is sized to the service rather than to a selected group of circuits, so nothing about the house has to change when the power does.

Standby Generator Service in Lebanon, NJ | A 2012 Generac Brought Onto a Service Plan

Steve from Lebanon, NJ has been a Green Sun Energy Services client since October of 2025. The 20 kW Generac at the house was installed by another company in November of 2012 and had been running for thirteen years when Steve brought its servicing to Green Sun. The first visit was a startup service – the full commissioning check a machine gets when it comes onto the plan, rather than a routine annual – taking in the spark plug and air filter, oil and filter, battery, load test and diagnostics, on a unit running natural gas behind a 90-amp transfer

Standby Generator Service in Middletown, NJ

20 kW Standby Generator Installation in Middletown, NJ | Sized for 2,888 Square Feet on a 200-Amp Switch

Milton and Gloria from Middletown, NJ have been Green Sun Energy Services clients since August of 2020. A Generac Guardian rated 20 kW on propane and 18 kW on natural gas went in that November, running on natural gas behind a 200-amp automatic transfer switch, with 2,888 square feet of living space behind it on the load survey. Natural gas is what makes a machine this size practical to live with: nothing to deliver and nothing to monitor, so an outage lasting four days demands no more attention than one lasting four hours.