Ductal® is a fibrous, ultra-high performance concrete (UHPC) which is available with a photovoltaic film incorporated into the large-format panels. Ductal®'s research center is innovating and anticipating requests related to future thermal regulations, to this end, they are utilizing a new thin organic film technology developed by the German company Heliatek. The resultant photovoltaic cladding combines aesthetics and sustainability in local power generation management.
Even Distribution of Energy Generation
In countries situated above the 30th parallel north, Ductal® photovoltaic cladding stands out by generating electricity in the early morning and late afternoon, thereby reducing the gap between generation time and consumption time, which has a direct impact on the sizing of electricity storage systems. The photovoltaic cladding also provides peak electricity generation in the spring and the autumn, when traditional rooftop photovoltaic solutions are characterized by a very low yield.
The graph below highlights the complementarity of a traditional rooftop photovoltaic solution, which is effective during the summer, and a facade-mounted Ductal® photovoltaic cladding solution on a 5-story building 60% of which is covered using the OPV Heliatek technology: Ductal
® photovoltaic cladding
performs well during inter-season periods, thereby enabling an increase in the electricity generation range that is more evenly distributed across the year.
Available Surface Area
The higher the building, the higher the proportion of available facade surface area to the rooftop:
|Storey's ||Facade surface area ||Roof surface area |
|2 ||900m² ||500m² |
|5 ||1,700m² ||500m² |
|8 ||2,600m² ||500m² |
Return of Investment
|Country ||Cost of Electricity (€/kWh) ||Payback (years) |
|Denmark ||0,31 €/kWh ||5 years |
|Cyprus ||0,29 €/kWh ||4 years |
|Germany ||0,27 €/kWh ||5 years |
|Belgium ||0,28 €/kWh ||5 years |
|Italy, Spain, Portugal ||0,23 €/kWh ||4 years |
|Switzerland, Austria ||0,20 €/kWh ||6 years |
|UK ||0,18 €/kWh ||8 years |
|Luxembourg ||0,17 €/kWh ||8 years |
For more information regarding Ductal® photovoltaic cladding click here.