20 kW Standby Generator Installation in Cranford, NJ | Whole-House Backup

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 service-entrance switch and a smart management module. The load calculation asked for 18 kW across the 2,000 square foot house, and the double electric oven and heat pump between them account for most of that – both are heavy draws, and the heat pump is heaviest in the moment it starts rather than while it runs. Two refrigerators, a washer, a gas dryer and a dishwasher make up the rest of what stays on.

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 Glen. We would highly recommend Green Sun Energy Services. 

— Mary2026Reviewed us onBBB

Green Sun Energy Services replied

Thank you, Mary. Permits, installation and final inspection each run on their own clock, and the only way a project feels smooth is if somebody is watching all three. The 20 kW whole-house backup at your home in Cranford went in on that basis. Glad it came together as planned.

Why Mary 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 7038-1 standby generator (20 kW LP / 18 kW NG) running on natural gas, on a 100-amp transfer switch (managed whole house).
  • Warranty: backed by a 1-year generator workmanship warranty.
  • Local: locally owned and operated in New Jersey since 2010, NJHIC licensed (#13VH06229000), with 40 completed standby generator projects across Union County and 618 standby generator projects throughout New Jersey.

Our work in Cranford

Green Sun Energy Services has completed 3 standby generator installations in Cranford. Cranford, a township in Union County, is served by PSE&G.

A generator is only valuable if it's ready when the power goes out.

Thinking about a standby generator for your Cranford home? Tell us about your project here or call 732-410-7818.

Power it. Protect it. Maintain it.

Project Facts

Location
Cranford, NJ
Service
Standby Generator Installation
Client since
September 2018
Manufacturer & model
Generac 7038-1
Rated output
20 kW LP / 18 kW NG
Fuel
Natural Gas
Home sized for
2,000 sq ft
Electrical service
100 amp
Transfer switch
100 amp
Load management
Managed Whole House
Workmanship warranty
1 year

Standby generator questions from Cranford homeowners

Why do outages last longer on some Cranford streets than others?

Mature tree cover over overhead lines is the usual reason. Limbs coming down in wind, snow or ice take the lines with them, so heavily treed streets tend to see both more frequent outages and longer restoration times than open ones. It is one of the honest arguments for standby power rather than a portable generator.

Does a permanently installed generator need a disconnect?

Yes. Permanently installed generators fall under the disconnecting-means requirements of the National Electrical Code's generator article, and the equipment and electrical design have to satisfy those requirements alongside the machine's own listing and instructions.

Does a generator produce less on natural gas than on propane?

Some models do have a lower rated maximum output on natural gas than on propane -- a current 22 kW machine is rated 22 kW on LP and 21 kW on natural gas. Other models carry their own ratings, so the model-specific specification sheet is what settles it rather than a general rule.

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