Standby Generator Installation and Standby Generator Service in Lawrenceville, NJ by Green Sun Energy Services.
Lap from Lawrenceville, NJ has been a Green Sun Energy Services client since April of 2024. The load survey came to 2,394 square feet, and the Generac commissioned in July of that year is rated 22 kW on propane and 19.5 kW on the natural gas it runs on here. A 200-amp automatic transfer switch backs the whole panel, so the house never had to be divided into circuits that matter and circuits that do not. Remote monitoring is part of the service cover, and its scheduled maintenance was completed in June of 2025 and April of 2026.
Project Facts
- Location
- Lawrenceville, NJ
- Services
- Standby Generator Installation, Standby Generator Service
- Client since
- April 2024
- Manufacturer
- Generac Model # 7042-2
- Rated output
- 22 kW LP / 19.5 kW NG
- Fuel
- Natural Gas
- Home sized for
- 2,394 sq ft
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
Standby generator questions from Lawrenceville homeowners
Can a standby generator be installed in Lawrenceville without natural gas?
Yes. Residential standby generators commonly run on liquid propane. A properly sized tank, regulator and piping system has to be designed to deliver adequate vapour flow and pressure for the machine.
How much room does a technician need around the machine?
Enough to satisfy the model-specific service clearances and to open the enclosure and remove service panels safely. Routine work reaches the engine, air filter, oil filter, spark plugs, battery, controller, fuel system and wiring compartments, so the space has to be real rather than nominal.
What gas pressure does a generator need?
It is model-specific and has to be read off the specification sheet rather than assumed. A current 22 kW model, for instance, specifies a minimum natural-gas pressure of 3.5 inches water column. Different models carry different requirements.


