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Indicative estimates only. Final designs and prices come from participating installers.

Equipment catalogue

Tesla Powerwall 3 home battery

Tesla · BATTERY

Powerwall 3

A 13.5 kWh home battery with an integrated solar inverter and optional whole-home backup configuration.

Source checked 19/09/2026

Usable capacity: 13.5 kWh
Continuous power: 11.04 kW
Chemistry: Not published
Depth of discharge: Not published
Round-trip efficiency: Not published
Backup capable: Yes, subject to required hardware

Manufacturer page Official datasheet

Technical overview

Powerwall 3 combines storage, solar inputs and system control. Backup capability and output depend on the final UK installation and local conditions.

Specifications can change by exact variant and revision. Confirm the model number and current manufacturer datasheet in the installer’s final design and contract.