100W Lightweight Monocrystalline Solar Panel
Sold by Renogy UK
From £89.99across the range: £89.99 – £152.99
Renogy UK's price when we last checked, on 2 September 2026. They run promotions and price by variant, so confirm the current price on their page before you buy.
Buy at Renogy UK (opens Renogy UK in a new tab)Multiple variants; verify the linked variant before quoting a price
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Overview
100W Lightweight Monocrystalline Solar Panel
100W at 2.4kg, with a 25-year output warranty. Same weight and footprint as the flexible panel, but backed by a performance warranty three times longer — which tells you most of what you need to know about the difference in construction.
- 100W at STC, 15.7% module efficiency
- 2.4kg, 1093 × 582 × 3mm
- PERC monocrystalline, 36 cells
- Vmp 19.4V, Voc 23.5V, Imp 5.20A, Isc 5.51A
- IP67 junction box, Class A fire rating
- 25-year 80% output warranty, 5-year material warranty
The warranty is the specification
Renogy quote 95% output at five years, 90% at ten and 80% at twenty-five. That is a rigid-panel warranty on a 2.4kg lightweight panel, and it is the single best reason to choose this over the cheaper flexible at the same weight and size. Over a ten-year conversion the difference in delivered energy is substantial.
Where lightweight wins
Payload. On a small van or a high-top with a lot of kit, 2.4kg per 100W instead of 5.9kg is real headroom, and it lowers the centre of gravity argument too. PERC cells and a Class A fire rating mean you are not giving up much to get it.
Before you order
Output cables are short at 2.3ft per cable, so plan for extension leads to reach the roof gland. MC4 connectors are rated to 35A and accept up to 10AWG. Maximum series fuse rating is 15A.
Renogy's published figures
Taken from Renogy's own specification for this product, on the date shown by the price. Anything wired into 230V mains should be signed off by a qualified electrician.
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