Solar, Generator and EV Charger in Lawrence Township, NJ | Three Projects, One Winter

Lawrence Township, NJ · Client since October 2024

Deborah from Lawrence Township, NJ has been a Green Sun Energy Services client since October of 2024. She and Charles bought all three trades on the same day, and all three were in by early January – the generator, then the charger the following morning, then the array.

A 22 kW Generac on a managed whole-house switch

Commissioned on 18 December 2024. The calculation asked for a minimum of 17 kW under NEC Article 220 Part IV and a Generac rated 19.5 kW on natural gas went in – 22 kW on propane – behind a 200-amp managed whole-house transfer switch with two smart management modules and whole-house surge protection. The house is 3,200 square feet with a refrigerator, a dishwasher, a washer and a gas dryer. The management modules were specified knowing a car charger was going in the next day, which is the sort of thing that only happens when the two jobs are bought from the same people on the same afternoon. It sits on our Diamond plan: annual maintenance, extended parts-and-labor cover and remote monitoring that Green Sun runs directly.

A ChargePoint on a 60-amp circuit, the next morning

19 December. Hardwired, J1772, on a dedicated 60-amp breaker at 11.5 kW – roughly 36 miles of range an hour – with a 100-amp management module. The charger draws 47 amps continuously, which is a large addition to any panel and a very large one to ask a generator to carry. Installing it the day after the machine went in meant the two were never designed in ignorance of each other.

23 panels and 10.58 kW

Live on 3 January 2025: 23 REC 460-watt modules on a SolarEdge HD Wave inverter, estimated at 12,636 kilowatt hours in the first year, with 236 feet of critter guard closing the sheltered gap beneath the array. The roof needed nothing, so the panels went straight on with no tear-off to schedule around.

Three trades, eleven weeks, one panel

An array, a standby generator and a fast car charger all hang off the same 200-amp service here, and they were specified as one problem rather than three. The generator got its management modules before there was a charger to manage. The charger went on a circuit sized in the knowledge that a generator would sometimes be carrying it. The array went up last, onto a roof that needed nothing, reducing what the house draws from the service on every ordinary day – and contributing nothing at all on the days the grid is down, which is precisely why the generator is there. Bought separately across three years, each of those decisions would have been made by somebody who could only see a third of the house.

Project Facts

Location
Lawrence Township, NJ
Services
EV Charger Installation, Solar Critter Guard, Solar Panel Installation, Standby Generator Installation, Standby Generator Service
Client since
October 2024

Solar

Panels
REC Model # 460AA-PURE-RX-DC
Panels
23
System size
10.58 kW
Inverter
SolarEdge SE10000H-US000NNC2 HD Wave
Mounting system
Snap-N-Rack
Estimated first-year production
12,636 kWh
Share of the home's electricity
100%
Electric utility
PSE&G
Critter guard fitted
236 ft

Standby generator

Manufacturer
Generac Model # 7042-2
Rated output
22 kW LP / 19.5 kW NG
Fuel
Natural Gas
Home sized for
3,200 sq ft
Electrical service
200 amp
Transfer switch
200 amp
Load management
Managed Whole House

EV charger

Charger
ChargePoint Model # CPH50-HARDWIRE-L23
Charging port
CCS (J1772)
Circuit breaker
60 amp
Charging stations
1
Estimated range added per hour
Estimated Range Per Hour: 36 mi / 58 km

Mike was on time, friendly and efficient. We have had very positive experiences with GreenSun.

— Deborah2026Reviewed us onGoogle

Green Sun Energy Services replied

Thank you, Deborah, and Mike will be glad to hear it. Yours is a three-part house in Lawrence Township: a solar array, a standby generator and an EV charger, each doing something the others cannot. Keeping all three on one service relationship is what makes a visit straightforward rather than three separate conversations.

Questions from Lawrence Township homeowners

Standby generatorDoes a generator in Lawrence Township have to sit twelve inches above the flood elevation?

That figure should not be treated as a universal rule without looking at the actual property. The required elevation can depend on the flood-zone designation, the municipal freeboard, the Design Flood Elevation, Coastal A or V Zone conditions, NJDEP requirements and the applicable building-code provisions. Each flood-zone installation is worked out individually.

SolarWhat does the inverter do?

It converts the direct current the panels produce into alternating current the house and the grid can use. Residential systems generally use either a central inverter, with optimizers at the modules where applicable, or a microinverter at each module.

EV chargingDoes installing an EV charger mean upgrading the electrical service?

Not necessarily. Adjustable charging equipment and listed energy-management systems can reduce the charging load when the rest of the house is drawing heavily, and the code specifically recognizes energy-management approaches for EV charging. An upgrade is one answer, not the only one.

Standby generatorWhat 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.

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