Tesla Powerwall 3
All-in-one solar + storage system with 13.5 kWh capacity and 97.5% round-trip efficiency
The Tesla Powerwall 3 redefines what a home battery can do. With a built-in solar inverter handling up to 20 kW DC of solar input, 13.5 kWh of LFP storage, and 97.5% round-trip efficiency, it is the most capable all-in-one home energy system available. Its 11.5 kW continuous output can run an entire home during a power cut, and the system can be expanded to 54 kWh per unit. Attracting 0% VAT on residential installations.
Tesla Powerwall 3 — supplied and installed by CCS Heating & Renewables
Technical Specifications
Key Benefits
13.5 kWh Capacity
The largest single-unit home battery available — stores more solar energy and covers more of your evening consumption.
97.5% Round-Trip Efficiency
Best-in-class efficiency means virtually no energy is lost in the charge-discharge cycle.
Built-in Solar Inverter
The Powerwall 3 includes 6 MPPT solar inputs — eliminating the need for a separate inverter and simplifying installation.
Whole-Home Backup
With 11.5 kW continuous output, the Powerwall 3 can power an entire home during a grid outage.
Expandable to 54 kWh
Add up to three expansion packs per unit — and connect up to four Powerwalls for total energy independence.
Tariff Integration
Works with Octopus Intelligent and Agile, Intelligent Octopus Go, and Met Office weather alerts for smart charging decisions.
Ideal For
- New solar installations wanting an all-in-one inverter and battery system
- Homeowners wanting the largest capacity and highest output battery
- Properties wanting whole-home backup power in outages
- Anyone on a time-of-use tariff wanting to maximise savings
Installation Service
Store excess solar energy and use it when you need it most. We install Foxstar, Tesla Powerwall, and SIG Energy battery ...
View Battery Storage serviceBook a Free Survey
Our engineers will assess your property and confirm whether this product is the right fit — no cost, no commitment.
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