PowerGuide

Thunder Bolt 460W vs Thunder Bolt 920W

A side-by-side look at the Thunder Bolt 460W and Thunder Bolt 920W. Winning figures are highlighted.

Thunder Energy
Thunder Bolt 460W
Thunder Energy
Thunder Bolt 920W
Price from £549.99 £749.99
Panel capacity 460 Wp 920 Wp
Panels 1 2
Max AC output 800 W 800 W
Microinverter Hoymiles HMS-800-2WB Hoymiles HMS-800-2WB
Mounting Garden or flat roof Garden or flat roof
Bifacial panels No No
Cable length n/a n/a
Warranty 10 yrs 10 yrs
ENA register reference THUNE/21203/V1 THUNE/21204/V1

Best value per row highlighted. Prices last checked 15 October 2026.

Thunder Bolt 460W

The smaller of the two Thunder Bolt kits: one rigid panel on a bracket set for a garden or flat roof, shed, outbuilding or rear extension roof, run by the same Hoymiles HMS-800-2WB microinverter as the 920W kit. Its second MPPT input sits unused here. Its panel capacity is well under the 800W output cap.

Full Thunder Bolt 460W review

Thunder 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