The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel is the better portable solar panel overall, rated 4.5 to 3.9. The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel leads on efficiency and value. The Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel costs $60 less ($149.99 vs $209.99).
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 $172.99For tightly curved or irregular surfaces such as boat biminis and teardrop roofs, where silicon flexible panels would crack. On a gently curved roof, a silicon flexible panel gives more watts per dollar.
Amazon $209.99 BougeRV $249.99Prices 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 | BougeRV Yuma 100W CIGS Thin-Film Flexible Solar Panel with Tape (Compact) |
|---|---|---|
| Overall rating | 4.5/5 | 3.9/5 |
| Value 30% | 89 $1.50 per rated watt | 68 $2.10 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 | 89 not yet tested; estimated 87% of rated watts from the median of the 10 tested panels |
| Portability 15% | 100 23.9 W per lb (4.2 lb (1.9 kg)) | 100 22.0 W per lb (4.5 lb (2.1 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 100 IP68, 10-year warranty |
| Efficiency 10% | 100 25% claimed efficiency | 0 17% claimed efficiency |
| Features 10% | 0 no kickstand, USB or bifacial cells | 0 no kickstand, USB or bifacial cells |
| Renogy Flex ShadowFlux 100W N-Type Anti-Shading Flexible Solar Panel | BougeRV Yuma 100W CIGS Thin-Film Flexible Solar Panel with Tape (Compact) | |
|---|---|---|
| Output | ||
| Rated power | 100 W | 100 W |
| Tested output | Not tested (estimated 87%) | Not tested (estimated 87%) |
| Efficiency | 25% (cell efficiency ("up to 25%")) | 17% (cell efficiency) |
| Cells | Monocrystalline (N-type TOPCon, cell-level bypass diodes (ShadowFlux)) | CIGS (thin-film copper indium gallium selenide) |
| Bifacial | No | No |
| Electrical | ||
| Open-circuit voltage (Voc) | 33.6 V | 30.5 V |
| Voltage at max power (Vmp) | 28.8 V | 24 V |
| Short-circuit current (Isc) | 3.7 A | 4.7 A |
| Current at max power (Imp) | 3.5 A | 4.2 A |
| Voc temperature coefficient | - | -0.3%/°C |
| Connections | ||
| Output connector | - | MC4 |
| USB ports | None | None |
| Build | ||
| Weight | 4.2 lb (1.9 kg) | 4.5 lb (2.1 kg) |
| Flexible | Yes, bends up to 270° | Yes, bends up to 360° |
| Dimensions | 37.09 x 24.13 x 0.10 in | 42.6 x 26.0 x 0.06 in |
| Kickstand | No | No |
| Water resistance | IP68 | IP68 |
| Warranty | 3 years | 10 years |
| Output warranty | 3-year power output warranty | 25-year performance warranty |
