PowerXpress Plug-in Solar 920W vs Thunder Bolt 920W
A side-by-side look at the PowerXpress Plug-in Solar 920W and Thunder Bolt 920W. Winning figures are highlighted.
| PowerXpress PowerXpress Plug-in Solar 920W | Thunder Energy Thunder Bolt 920W | |
|---|---|---|
| Price from | £669 | £749.99 |
| Panel capacity | 920 Wp | 920 Wp |
| Panels | 2 | 2 |
| Max AC output | 800 W | 800 W |
| Microinverter | n/a | Hoymiles HMS-800-2WB |
| Mounting | Wall, floor or balcony | Garden or flat roof |
| Bifacial panels | Yes | No |
| Cable length | 5 m | n/a |
| Warranty | 1 yrs | 10 yrs |
| ENA register reference | POWEZA/21077/V1/A1 | THUNE/21204/V1 |
Best value per row highlighted. Prices last checked 15 October 2026.
PowerXpress Plug-in Solar 920W
The 800W in Screwfix's listing title is the microinverter's AC output; the panels total 920W (2 × 460W), and both figures are correct and describe different parts of the kit. Sold with fixings for wall, floor or balcony mounting, but Screwfix's own spec table states a 1-year manufacturer guarantee, well short of the 10-year panel warranties common elsewhere in this catalogue.
Full PowerXpress Plug-in Solar 920W 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