PatioSun Duo vs Thunder Bolt 920W
A side-by-side look at the PatioSun Duo and Thunder Bolt 920W. Winning figures are highlighted.
| PatioSun PatioSun Duo | Thunder Energy Thunder Bolt 920W | |
|---|---|---|
| Price from | £699 | £749.99 |
| Panel capacity | 890 Wp | 920 Wp |
| Panels | 2 | 2 |
| Max AC output | 800 W | 800 W |
| Microinverter | Hoymiles HiFlow 800W | Hoymiles HMS-800-2WB |
| Mounting | Ground mount, pre-installed | Garden or flat roof |
| Bifacial panels | Yes | No |
| Cable length | 5 m | n/a |
| Warranty | 10 yrs | 10 yrs |
| ENA register reference | PATIO/21026/V1/A2 | THUNE/21204/V1 |
Best value per row highlighted. Prices last checked 15 October 2026.
PatioSun Duo
The two-panel PatioSun kit: 890W of bifacial panels against the same 800W microinverter and the Lite's single 445W panel. Same pre-installed steel mount and sold direct, at roughly £250 more than the single-panel Lite.
Full PatioSun Duo reviewThunder Bolt 920W
The sensible middle of the register-listed range: enough panel capacity to make real use of the 800W cap, and two independent MPPTs so one shaded panel doesn't drag the other down. Bracket sets included for a garden or flat roof, shed, outbuilding or rear extension roof.
Full Thunder Bolt 920W review