Tesla
Powerwall 3
Integrated inverter and battery. DC-couples directly to Solar Roof strings.
At a glance
Key specs
- Usable capacity
- 13.5 kWh per unit
- Continuous power
- 11.5 kW on-grid and off-grid (variants at 5.8, 7.6, 10, 11.5 kW)
- Off-grid max discharge
- 15.4 kW (configurable, PV-only conditions)
- Motor start
- 185 A LRA (starts a 4 to 5-ton AC compressor on one unit)
- Chemistry
- Lithium iron phosphate (LFP) on 2024+ builds
- Integrated solar inverter
- 20 kW DC input across 6 MPPTs
- Stackable
- Up to 4 Powerwall 3 per Gateway, plus 3 Expansion units per Powerwall (up to 216 kWh / 46 kW AC)
- Operating temp
- -4°F to 122°F (derates above 104°F)
- Enclosure
- NEMA 3R, IP67 battery, IP55 wiring compartment
- Backup transition
- Automatic transfer (~25 ms)
- Efficiency
- 97.5% solar to home, 89% round-trip through battery
- Metering accuracy
- Revenue grade ±0.5% (ANSI C12.20)
Warranty
10 years
- 10-year limited warranty on the Powerwall and Gateway, effective from installation
- 70% energy capacity retention guaranteed at year 10 (9.45 kWh of 13.5 kWh rated)
- Unlimited cycles on solar self-consumption, time-based control, or backup use
- Non-standard applications (e.g. VPP export): 37.8 MWh aggregate throughput cap
- Tesla Solar Shutdown Device (MCI) carries 25-year coverage when paired with Powerwall 3
- Transfers to subsequent homeowners with proof of ownership, no fee
- Requires internet connectivity for remote firmware updates (otherwise warranty may reduce to 4 years)
- Labor reimbursement available to Tesla Certified Installers (PrimeBid Energy qualifies)
- Storm Watch and dynamic islanding included at no cost
- Federal incentive value available through PrimeBid incentive paths (Midas My Incentives and Full Transfer)
Certifications
Tested and approved
UL 9540UL 9540AUL 1741-SAIEEE 1547NEC 706 / 2020-2023 compliant
Ready to see Powerwall 3 on your home?
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