Tesla Powerwall 3 the house that doesn't blink.
A sealed home battery with 13.5 kWh energy and 11.5 kW continuous power — enough to carry a real home through the evening peak and straight through an outage. Designed, permitted, and installed by OC Solar's in-house crews.
It lives outside in the weather.
Rain, heat waves, marine-layer damp — the case is sealed and rated for all of it, mounted on the wall or the floor. It works every day, not just the day the grid fails.
Warrantied like it plans to stay.
The warranty runs a decade, the retention floor is in writing, and daily solar cycling never counts against it.
Installed by the crew that answers for it.
Designed, permitted, and installed by OC Solar's in-house crews — one accountable team from the first site visit to permission to operate.
- Years serving SoCal
- 10+
- Installed capacity
- 30+ MW
- Projects & service calls
- 6,373
- Google rating (400+)
- 4.9★
Years serving SoCal
Installed capacity
Projects & service calls
Google rating (400+)
The camera arcs around a Tesla Powerwall 3 mounted on white stucco in golden light.
Tesla Powerwall 3: 13.5 kWh AC (nominal), 11.5 kW AC maximum continuous discharge of continuous power.
The solar inverter is built in — 6 MPPTs accepting up to 20 kW DC maximum solar STC input.
One sealed case, 1099 x 609 x 193 mm (43.25 x 24 x 7.6 in), 130 kg (287 lb).
One sealed unit. The entire system.
Powerwall 3 isn't a battery that needs a separate inverter bolted next to it — the solar inverter is built in. Your panels wire straight into the unit, so the wall stays clean, the design stays simple, and one piece of hardware handles solar conversion, storage, and backup.
Strong enough to start the A/C. Quiet enough to forget.
Every unit carries Tesla's 10-year warranty — unlimited cycles for solar self-consumption, time-based control, and backup.†5
Dinner, uninterrupted: a family eats as the grid drops — the lights never flicker.
Backup Switch/Gateway automatically detects grid outages, providing a seamless transition to backup power.
The camera pulls back: the whole street is dark, one house is glowing, and its porch lantern blooms on.
Whole home backup; a single unit can support the power needs of most homes. Up to 4 Powerwall 3 units supported.
The rest of the system.
Tech specs
Tesla Powerwall 3, by the numbers
Every figure below is read directly from Tesla's Powerwall 3 datasheet and warranty documents — the same sources our designers work from.
- Energy capacity
- 13.5 kWh AC (nominal)
- Continuous power
- 11.5 kW AC maximum continuous discharge
- Motor start capability
- 185 A LRA (1 s)
- Solar inverter
- Fully integrated solar and battery system
- Solar inputs
- 6 MPPTs
- Max solar input
- 20 kW DC maximum solar STC input
- Solar-to-home efficiency
- 97.5% (CEC weighted methodology)
- Scalability
- Up to 4 Powerwall 3 units supported
- Warranty
- 10 years
- Warrantied capacity retention
- 70% energy retention at 10 years from initial installation
- Cycle limits
- Unlimited cycles for solar self-consumption, time-based control, and backup
- Operating temperature
- -20C to 50C (-4F to 122F); may de-rate above 40C (104F)
- Enclosure
- NEMA 3R, indoor and outdoor rated
- Water resistance
- IPX7 (battery & power electronics); IPX5 (wiring compartment)
- Noise
- <50 dB(A) typical, <62 dB(A) maximum at 1 m
- Dimensions
- 1099 x 609 x 193 mm (43.25 x 24 x 7.6 in)
- Weight
- 130 kg (287 lb)
- Mounting
- Floor or wall mount
- Connectivity
- Wi-Fi (2.4/5 GHz), dual-port switched Ethernet, Cellular LTE/4G (coverage-dependent)
- Metering
- Revenue grade (+/- 0.5%)
- Fire testing
- Meets the unit level performance criteria of UL 9540A
- Seismic rating
- AC156, IEEE 693-2005 (high)
Source: Powerwall_3_Datasheet_NA-EN.pdf · Powerwall_Warranty_US-EN.pdf (Rev 2.6).
OC Solar — Tesla Powerwall Premier Certified Installer
Tesla Pro Council — 1 of 12 installers — Founder Vinnie Curcie sits on Tesla's 12-member installer advisory council.
Good questions
Tesla Powerwall 3 FAQ
Each Powerwall 3 stores 13.5 kWh AC (nominal) and delivers up to 11.5 kW AC maximum continuous discharge. Systems support up to 4 powerwall 3 units supported, so we size the bank to your home's actual loads rather than a one-size answer.
Prefer to talk it through? Talk to a Powerwall specialist
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†1<50 dB(A) typical, <62 dB(A) maximum at 1 m — Powerwall_3_Datasheet_NA-EN.pdf, p3, Environmental Specifications.
†2185 A LRA (1 s) — Powerwall_3_Datasheet_NA-EN.pdf, p2, Battery Technical Specifications.
†313.5 kWh AC (nominal) — Powerwall_3_Datasheet_NA-EN.pdf, p2, Battery Technical Specifications.
†411.5 kW AC maximum continuous discharge — Powerwall_3_Datasheet_NA-EN.pdf, p2, Battery Technical Specifications.
†510 years — Powerwall_3_Datasheet_NA-EN.pdf; Powerwall_Warranty_US-EN.pdf (Rev 2.6), Datasheet p2; Warranty p1.
†6Unlimited cycles for solar self-consumption, time-based control, and backup — Powerwall_Warranty_US-EN.pdf (Rev 2.6), p1, Ten Year Limited Warranty table.
†7Backup Switch/Gateway automatically detects grid outages, providing a seamless transition to backup power — Powerwall_3_Datasheet_NA-EN.pdf, p5 Backup Switch; p6 Backup Gateway 2.
†8Whole home backup; a single unit can support the power needs of most homes — Powerwall_3_Datasheet_NA-EN.pdf, p1, overview.
†9Up to 4 Powerwall 3 units supported — Powerwall_3_Datasheet_NA-EN.pdf, p2, Battery Technical Specifications.
Final system design is confirmed for your specific home.