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Fangxing eco-friendly solar roof tile, Duer, is a revolution in solar roofing history. We're the first and the only one manufacturer in China developing and producing this type of roof tile.
Duer is a perfect combination of photovoltaic solar module and stone slate. Each board uses 12 monocrystalline silicon solar cells, which are embedded in slate structure. Installed on unshaded pitched roof, Duer make full use of roof to provide seamless clean electricity in decades.
It's proven Duer is widely used in mountain area where no electricity is provided, buildings that require energy saving and environmental protection, and areas that need lighting.
There are two options to install solar roof tile, on-grid and off-grid systems. On-grid system can power 70%+ conversion rate, whereas off-grid with battery in charge promises 17% - 25% conversion depending upon local light intensity.
The other equipments of Duer include invertor, controller (cluster) and battery.
Parameter| Solar Cell | Mono-silicon(125mm×125mm) |
| Overall Size(mm) | 410×940 |
| Effective Size(mm) | 350×900 |
| Thickness(mm) | 13 |
| Weight(kg) | 6.0±0.2 |
| Power under Standard Test Conditions(Wp).-Pm | 33 |
| Optimum Operating Voltage(V).-Vmp | 6.0 |
| Optimum Operating Current(A).-Imp | 5.0 |
| Open Circuit Voltage(V).- Voc | 7.3 |
| Short Circuit Current(A).- Isc | 5.31 |
| Power Output Tolerance(%) | ±3 |
| Short Circuit Temperature Coefficient(%) | +0.09/ºC |
| Open Circuit Temperature Coefficient(%) | -0.34/ºC |
| Power Temperature Coefficient under Standard Test Conditions (%) | -0.37/ºC |
| Working Temperature(ºC) | from -40 to 90 |
Duer Solar Slate Roof