OKACELL makes building-integrated photovoltaic available for architectural applications. OKACELL offers the greatest possible variety of designs with different cell types, cell colours and customized alignment. A wide range of module shapes is possible in addition to rectangular panels. OKACELL is available as monolithic glazing and insulated glazing for facade and roof.
- Individual design options
- High efficiency up to 180 Wp/m² depending on the cell type and coverage density
- Extensive support in planning
- Combination with OKALUX light diffusing insulated glass
- Combination with individually printed front glasses
- Visibility for birds
The cells are embedded in a laminated glass made from tempered/toughened glass or heat-strengthened glass (low-iron glass). PVB or EVA foil is used as the intermediate layer.
| max glass dimensions | up to 2200 mm x 3600 mm |
| Minimum size | with two cells alongside each other approx. 400 mm |
| Individual cell size | 158,75 mm x 158,75 mm |
| Minimum cell spacing | ≥ 2,5 mm |
| Distance from cell to edge seal | ≥ 20 mm |
| Lateral projection connector | approx. 10 mm (cable diameter) |
| Electrical data | |
| Efficiency | approx. 22.2 % |
| Power | 180 Wp/m² at 100 % coverage density |
Due to the rapid technical progress in the development of new cell types and sizes, it may be that a specific type of cell is no longer available at a later date. The inherent colour and the brightness of crystalline cells is not a defined property. Therefore, colour differences may occur within a module and between different modules.
Further technical information regarding the various cell types and their specific key data can be requested directly from OKALUX.
Technical values of standard types
| U-value | 1.0 to 1.4 W/(m2K) as insulation glazing and up to 0.8 W/(m2K) in combination with OKALUX K |
| TSET | ≥ 12 % |
| Tv | 10 % to 80 % |
Legend and related sizes
| Unit | Standard | Name | |
| U | W/(m2K) | DIN EN 673 | Heat transfer coefficient, Ug = U |
| DIN EN 674 | |||
| TSET | % | DIN EN 410 | Total energy transmittance |
| Tv | % | DIN EN 410 | Light permeability (direct/hemispheric) |
The specified values are approximate. They are based upon measurements by recognised test institutes and the derived calculations.