Michael from Princeton, NJ has been a Green Sun Energy Services client since July of 2024. The generator was commissioned in September: 26 kW on natural gas, on a 200-amp service-entrance switch with three smart management modules and surge protection. This is the largest machine on the site, and the load calculation supports it – 22 kW across 5,500 square feet, with three sump pumps, an electric dryer and an electric oven on the list. Three pumps is not redundancy but capacity: a basement that needs three has water arriving faster than one or two can move it, and all three will be running in the storm that also takes the power out. Annual maintenance, an extended parts-and-labor warranty and monitoring we manage all sit behind the machine.
Why Michael chose Green Sun Energy Services
Complete backup power, from sizing and installation to the service that keeps it ready.
What makes Green Sun Energy Services different
- Standby generators: installed and serviced as a Generac Authorized Sales and Service Dealer, by factory-authorized Generac technicians. On this home: a Generac 7290 standby generator (26 kW LP / 22.5 kW NG) running on natural gas, on a 200-amp transfer switch (managed whole house) and serviced by Green Sun Energy Services.
- Warranty: backed by a 5-year generator workmanship warranty.
- Local: locally owned and operated in New Jersey since 2010, NJHIC licensed (#13VH06229000), with 13 completed standby generator projects across Mercer County and 621 standby generator projects throughout New Jersey.
Our work in Princeton
Green Sun Energy Services has completed 3 standby generator installations and 7 generator service customers in Princeton. Princeton, a borough in Mercer County, is served by PSE&G.
Thinking about a standby generator for your Princeton home? Tell us about your project here or call 732-410-7818.
Power it. Protect it. Maintain it.
Project Facts
- Location
- Princeton, NJ
- Services
- Standby Generator Installation, Standby Generator Service
- Client since
- July 2024
- Manufacturer & model
- Generac 7290
- Rated output
- 26 kW LP / 22.5 kW NG
- Fuel
- Natural Gas
- Home sized for
- 5,500 sq ft
- Electrical service
- 200 amp
- Transfer switch
- 200 amp
- Load management
- Managed Whole House
- Workmanship warranty
- 5 years
Standby generator questions from Princeton homeowners
What is a service-entrance-rated transfer switch?
One that is listed for use as service equipment when installed in the appropriate configuration. These are commonly used for whole-house systems, where the transfer switch becomes part of the home's service arrangement rather than sitting downstream of it.
What size standby generator does a Princeton home need?
The correct size is decided by the electrical loads the generator is expected to run, not by the square footage of the house. Central air, heat pumps, electric heat, well and sump pumps, refrigerators and freezers, electric ranges and dryers, pool equipment and EV chargers all count. Where a load is connected automatically, the generator either has the capacity for it or an approved load-management system controls it.
Should gas pressure be checked while the generator is running?
Yes. Operating pressure means more than a static reading taken with the generator off. The fuel system has to hold adequate pressure while the generator runs and other appliances may also be drawing gas. That matters most when an existing residential service is being reused.