Polycrystalline solar panels are also made from sillicon.However,instead of using a single crystal of silicon,manufacturers melt many fragments of silicon together to form the wafers for the panel. Polycrystalline solar panels are also referred to as "multi-crystalline"or many-crystal sillicon. Because there are many crystals in each cell,there is to less freedom for the electrons to move.As a result,polycrystalline solar panels have lower efficiency ratings than monocrystalline panels.| Encapsulation | Class / Eva / Cell / Eva / Backsheet | ||||
| Maximum Power Pmax(W) | 270 | 275 | 280 | 290 | 300 |
| Maximum Power Voltage(Vmp/V) | 31.5 | 31.8 | 32.1 | 32.3 | 32.35 |
| Maximum Power Current(Imp/A) | 8.57 | 8.65 | 8.72 | 8.98 | 9.23 |
| Open Circuit Voltage(Voc/V) | 37.8 | 38.16 | 38.52 | 38.76 | 39 |
| Short Circuit Current(Isc/A) | 9 | 9.08 | 9.16 | 9.43 | 9.69 |
| Cell Efficiency(%) | 18.88 | 19.21 | 19.6 | 20.02 | 20.44 |
| Module Efficiency(%) | 16.6 | 16.49 | 17.21 | 17.83 | 18.48 |
| Power Tolerance(W) | 0~+5W | ||||
| Temperature Coefficient of Isc(αIsc) | +0.059%/ºC | ||||
| Temperature Coefficient of Voc(βVoc) | -0.330%/ºC | ||||
| Temperature Coefficient of Pmax(γVoc) | -0.410%/ºC | ||||
| STC | Irradiance 1000w/m2, Cell Temperature 25ºC, Air Mass 1.5 | ||||