The GEYOTO S200 200W Bifacial Portable Solar Panel is the better portable solar panel overall, rated 4.5 to 4.0. The GEYOTO S200 200W Bifacial Portable Solar Panel leads on value and durability. The GEYOTO S200 200W Bifacial Portable Solar Panel costs $179.01 less ($219.99 vs $399).
A bifacial 200 W panel for car campers and RV owners with an XT60-input power station, where the reflective case can add some extra output. Not one to carry far.
Amazon $219.99 GEYOTO $259.99The strongest pick here for EcoFlow owners who want the most watts from one folding panel they can still carry easily. Buy it on sale; it rarely sells at full price.
Amazon $399 EcoFlow $399Prices 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 mid-size portable solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | GEYOTO S200 200W Bifacial Portable Solar Panel | EcoFlow NextGen 220W Bifacial Portable Solar Panel |
|---|---|---|
| Overall rating | 4.5/5 | 4.0/5 |
| Value 30% | 90 $1.10 per rated watt | 56 $1.81 per rated watt |
| Tested output 20% | 89 not yet tested; estimated 87% of rated watts from the median of the 10 tested panels | 92 best measured 88% of rated watts (1 test) |
| Portability 15% | 61 13.3 W per lb (15 lb (6.8 kg)) | 69 14.3 W per lb (15.4 lb (7 kg)) |
| Durability 15% | 100 IP68, 3-year warranty | 60 IP68, 1-year warranty |
| Efficiency 10% | 100 26% claimed efficiency | 100 25% claimed efficiency |
| Features 10% | 60 built-in kickstand, bifacial | 60 built-in kickstand, bifacial |
No independent test published yet.
| Tested by | Measured peak | Of rated | Conditions |
|---|---|---|---|
| OutdoorGearLab | 193 W | 88% | Average power over a two-hour charge of a Jackery Explorer 1000 (385 Wh in 2 h), clear day at 6,300 ft, 55-65 °F; OutdoorGearLab reports this as measured watts, not an instantaneous peak |
| GEYOTO S200 200W Bifacial Portable Solar Panel | EcoFlow NextGen 220W Bifacial Portable Solar Panel | |
|---|---|---|
| Output | ||
| Rated power | 200 W | 220 W |
| Tested output | Not tested (estimated 87%) | 193 W (88%) |
| Efficiency | 26% (cell efficiency per GEYOTO's product description) | 25% (EcoFlow lists 25.00% efficiency without saying whether it is cell or module efficiency) |
| Cells | Monocrystalline (N-type) | Monocrystalline (N-type TOPCon) |
| Bifacial | Yes | Yes, up to 175 W more from the back |
| Electrical | ||
| Open-circuit voltage (Voc) | - | 21.5 V |
| Voltage at max power (Vmp) | 25.2 V | 18.4 V |
| Short-circuit current (Isc) | - | 12.4 A |
| Current at max power (Imp) | 7.9 A | 11.9 A |
| Connections | ||
| Output connector | MC4 | MC4 |
| Cables included | 10 ft (3 m) MC4 to XT60 cable, reflective EVA carrying case | MC4 to XT60i |
| USB ports | None | None |
| Build | ||
| Weight | 15 lb (6.8 kg) | 15.4 lb (7 kg) |
| Folded size | 20.6 x 26.5 x 1.1 in (522 x 673 x 28 mm) | 24.2 x 23.2 x 1.3 in |
| Unfolded size | 82.2 x 26.5 x 1.1 in (2088 x 673 x 28 mm) | 24.2 x 84.8 x 1.0 in |
| Kickstand | Yes | Yes |
| Water resistance | IP68 | IP68 |
| Warranty | 3 years | 1 years |
