Tesla Powerwall 3 vs Fox ESS EP11: kWh, warranty and £/kWh compared
Head-to-head UK comparison of the Tesla Powerwall 3 and Fox ESS EP11 on the metrics that determine real value: usable capacity, warranty, round-trip efficiency and cost per usable kWh.
| Tesla Powerwall 3 | Fox ESS EP11 | |
|---|---|---|
| Usable kWh | 13.5 | 10.36 |
| Rated kWh | 13.5 | 10.5 |
| Round-trip efficiency | 89% | 91% |
| Warranty | 10y | 10y |
| Installed cost | £9,500 | £6,200 |
| Cost per usable kWh | £704 | £598 |