The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel is the better portable solar panel overall, rated 4.5 to 4.4. The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel leads on portability and durability. The ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) wins on features and value. The ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) costs $50 less ($99.99 vs $149.99).
For curved roofs with vents, racks or antennas that shade part of the panel during the day. With clear sun on an open roof, Renogy’s standard 100 W flexible panel costs less.
Amazon $149.99 Renogy $172.99A plug-and-play 100 W panel for owners of small power stations who want every common adapter in the box and USB ports for direct charging. It is about 1.5 lb lighter than ZOUPW’s older F100W.
Amazon $99.99 ZOUPW $109.99Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every small portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel | ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) |
|---|---|---|
| Overall rating | 4.5/5 | 4.4/5 |
| Value 30% | 89 $1.50 per rated watt | 100 $1.00 per rated watt |
| Tested output 20% | 91 not yet tested; estimated 87% of rated watts from 1 test of Renogy panels and the median of the 10 tested panels | 100 not yet tested; estimated 91% of rated watts from 1 test of ZOUPW panels and the median of the 10 tested panels |
| Portability 15% | 100 23.9 W per lb (4.2 lb (1.9 kg)) | 54 12.5 W per lb (8 lb (3.6 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 60 IP67, 1-year warranty |
| Efficiency 10% | 100 25% claimed efficiency | 100 25% claimed efficiency |
| Features 10% | 0 no kickstand, USB or bifacial cells | 55 built-in kickstand, USB output |
| Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel | ZOUPW 100W Lightweight Foldable Solar Panel (ZOUPW-QZ100W) | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 91%) |
| Efficiency | 25% (cell efficiency ("up to 25%")) | 25% (cell efficiency per ZOUPW) |
| Cells | Monocrystalline (N-type TOPCon, cell-level bypass diodes (ShadowFlux)) | Monocrystalline (N-type, 16BB, 182 mm cells) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 33.6 V | 23.8 V |
| Voltage at max power (Vmp) | 28.8 V | 19.8 V |
| Short-circuit current (Isc) | 3.7 A | 5.3 A |
| Current at max power (Imp) | 3.5 A | 5 A |
| Connections | ||
| Output connector | - | MC4 |
| Cables included | - | 10 ft MC4 extension cable with XT60, Anderson, DC7909 and DC5521 ends plus a DC8020 adapter, 10-in-1 DC5521 adapter set |
| USB ports | None | On the built-in controller: 1x USB-C (5/9/12/15 V at 3 A; ZOUPW's site also lists 20 V/2.25 A, 45 W max), 1x USB-A 5V/3A, 1x USB-A up to 12V/1.5A; the controller is not water-resistant |
| Build | ||
| Weight | 4.2 lb (1.9 kg) | 8 lb (3.6 kg) |
| Flexible | Yes, bends up to 270° | - |
| Dimensions | 37.09 x 24.13 x 0.10 in | - |
| Folded size | - | 23.38 x 23.22 x 1.77 in (594 x 590 x 45 mm) |
| Unfolded size | - | 46.85 x 23.23 x 0.98 in (1190 x 590 x 25 mm) |
| Kickstand | No | Yes |
| Water resistance | IP68 | IP67 |
| Warranty | 3 years | 1 years |
| Output warranty | 3-year power output warranty | - |
