Rob — Vineland area (083)
7.2 kW DC · Installed October 2024 · ACE territory
What got put on the roof
| Item | Detail |
|---|---|
| System size | 7.2 kW DC |
| Panel count (est.) | 18 panels — assuming 400 W modules |
| Installed | October 2024 |
| Utility | ACE |
| Location | ZIP 083xx (New Jersey) |
Predicted vs actual production
The PVWatts number is what we used pre-install. The observed number is what the meter actually counted.
| Source | Annual production |
|---|---|
| NREL PVWatts prediction | 9,072 kWh |
| Observed (utility data) | 9,234 kWh |
| Delta | +1.8% — over the prediction |
What the SRECs paid out
NJ SREC-II / ADI in ACE territory — each MWh produced earns one SREC, sold quarterly into the NJ market.
9.23 MWh
SRECs registered through the homeowner’s NJ GATS account for the trailing 12-month window. One MWh = one SREC.
$722
First-year SREC-II payout. NJ’s administratively determined incentive currently sets $76–95/MWh for 15 years — this study’s number reflects what cleared.
Before vs after the install
| Window | Average monthly bill |
|---|---|
| Before solar | $156 |
| After solar (est.) | $50 — baseline service + non-offset usage |
| Monthly savings | $106 — before SREC income |
Post-solar bill is a conservative $50/month estimate covering the utility delivery charge and seasonal non-offset usage. Real-life results vary month to month with weather and household load.
Homeowner quote
“Chris told me my roof orientation would underperform. He was right — and he priced the system accordingly. No surprise on the production report.”
Notes from the project
Rob’s roof is a south-southwest orientation with a 28-degree pitch — close enough to optimal that the per-watt yield held up, but the conservative azimuth assumption is why I bid 7.2 kW instead of pushing for 8+. He came out ahead on production and his SREC-II registration cleared the next quarter after PTO.
How I measure these numbers
- Production: pulled from the homeowner’s utility net-metering portal (export kWh out of the meter back to the grid + self-consumed kWh from a Sense / inverter API where available). Partial-year installs are annualized in 12-month windows starting at permission-to-operate (PTO).
- SREC payout: the homeowner’s NJ GATS account quarterly statement. Reported figure is the first full 12-month window post-registration. NJ SREC-II / ADI in ACE territory.
- Predicted production: the NREL PVWatts v8 number we used in the original quote — same azimuth, tilt, and system loss inputs your installer would file with the utility.
- Before-bill: 12-month average from the utility account history pulled at intake. After-bill is an illustrative $50/month estimate covering delivery charges and non-offset usage; actual months vary with weather and household load.
- Privacy: ZIP3 only (never ZIP+4), first name only, photo only with the homeowner’s written permission.
Want Your Numbers Tracked This Way?
Every install I broker gets the same predicted-vs-observed tracking treatment. Run the calculator with me and I’ll show you what to expect from your roof.