Tesla Powerwall battery installation in a garage

Service · Battery Storage

Whole-home backup. Sub-utility rates. Tesla & Enphase certified.

Powerwall 3 and Enphase IQ battery installs paired with new or existing solar arrays. Auto-island when the grid drops, time-shift production to peak-rate hours, and keep the AC running through a Phoenix monsoon outage.

Battery storage options

Three batteries we install. All certified, all monitored.

Tesla

Powerwall 3

Whole-home backup · most popular

Integrated inverter + battery in one wall-mounted unit. Stacks up to 4 units per home. Outdoor-rated to 122°F. Auto-island on grid drop in under 100ms.

Capacity13.5 kWh

Continuous11.5 kW

Peak22 kW

Warranty10 yrs

Enphase

IQ Battery 10C

Modular · matches IQ8 microinverters

Stackable 3.5 kWh modules — buy only what you need, add capacity later. Pairs natively with Enphase IQ8 microinverters for whole-system monitoring. Lithium iron phosphate (LFP) chemistry.

Capacity10.08 kWh

Continuous7.68 kW

Modular3.5 kWh ea

Warranty15 yrs

Tesla

Powerwall 3 + Expansion

Off-grid-capable · whole-home + EV

Base Powerwall 3 + up to 3 expansion units (each 13.5 kWh). Configured to back up a Tesla Wall Connector at reduced rate. Largest residential install we’ve done is 54 kWh stacked.

Capacity54 kWh max

Continuous11.5 kW

EV chargingReduced

Warranty10 yrs

350+

Solar Systems Installed

Residential and commercial PV installs across the Phoenix & Tucson metros

12 yrs

Years Experience

Founded in Phoenix 2014 — same crew, same engineers, same commitment

$1,800/yr

Avg Annual Savings

Mean year-one utility bill reduction for a typical SunWright customer

4.9★

Google Rating

Hundreds of verified 5-star reviews from Arizona homeowners

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

Anna M.

Scottsdale · 10.2 kW + Powerwall, 2024

★★★★★

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

Diego R.

Chandler · 11.4 kW shingle-roof, 2025

★★★★★

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

Priya & Sam V.

Mesa · 8.4 kW PPA, 2025

Frequently asked

What homeowners ask about battery storage.

How much backup does one Powerwall give me?

One Powerwall 3 stores 13.5 kWh and outputs 11.5 kW continuous, 22 kW peak. That covers AC, fridge, lights, internet, and a couple of outlets for most homes through a 12-hour outage. Two Powerwalls run a whole modern home for 24+ hours including AC.

Does battery storage pay for itself?

It depends on your utility plan. On APS time-of-use plans where 4–7pm peak rates are 3× off-peak, a Powerwall pays back in 8–11 years just from rate-arbitrage. On flat rates, the value is mostly resilience + backup, not bill reduction.

What about EV charging during an outage?

With Powerwall + the Tesla Wall Connector, you can choose to back up the EV charger at reduced rate (typically 16A) or skip it. Most customers skip car charging during outages and keep the AC and fridge online instead.

Can I add storage to a system I already own?

Yes—we retrofit Powerwall and Enphase IQ batteries onto existing SunWright systems and onto systems other companies installed. Adds typically take a half-day plus utility re-interconnection (10–15 days).

Free quote in 2 minutes

Power outage panic? You don’t have to.

Send the form below — we’ll model your home with one Powerwall, two Powerwalls, or Enphase IQ batteries and show you the runtime + payback math side by side.

Mon–Sat, 7am–7pm

(602) 555-0177