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8.4 kW + Powerwall 3 - Encanto Cape Cod

Case study · APS · 2024-11

8.4 kW + Powerwall 3 - Encanto Cape Cod

Phoenix, AZ 85007 (Encanto) · 20× Q.PEAK DUO BLK ML-G10+ (Q-Cells), 420W · 20× Enphase IQ8M microinverters · 1× Tesla Powerwall 3 (13.5 kWh).

System spec sheet

Every component on the truck.

No mystery parts, no rebranded modules - Tier-1 components in every install, listed by name and model.

Monthly bill

Before solar vs. after

Before

$258 avg

After

$18 avg

Federal credit claimed: $9,840 (30% of $32,800 installed)

Production · year one

Model vs. actual

SunSight model

14,600 kWh

Actual year one

14,920 kWh

102% of modelof the production model.

Installer notes

The thinking behind this design.

Historic Encanto bungalow with a small-ish 32′ × 28′ south-facing roof plane - we used Q-Cells G10+ 420W (slightly higher wattage than the older 405W generation) to hit 8.4 kW on the available roof. Customer's primary concern was preserving the period-correct dormer profile from the street; the SunPower L-foot Slim mounting gives ~3.5″ array offset which is less visible than older systems. Powerwall 3 mounted in basement (uncommon in PHX but this house has one) - battery covers the AC load through the 5–8pm summer peak and the EV charges off solar 11am–3pm.

From the neighborhood

Real customers. Real receipts.

5-star average across 480+ Google reviews. We’re happy to share full monthly-production data on any nearby install - or just drive you past the rooftop with our yard sign on it.

★★★★★
Three solar companies pitched us. SunWright was the only one who showed us PPA, loan, AND cash numbers side by side. Eight months in, our APS bill is $14 and we run AC at 74° all summer.
$211/moactual savings
★★★★★
Crew was on time, panels were on the roof in one day, and the city inspector signed off in five days flat. They did the SRP rebate paperwork for us. Best contractor experience we’ve had in this house.
$232/moyear-one bill drop
★★★★★
We went PPA because we’re moving in five years. SunWright still treated it like our forever house - engineered for the pool load, walked us through the transfer clause, no pressure to upsell to a loan.
$148/mooff APS bill

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