Originally European, the Passivhaus label has been able to convince and has developed widely in four corners of the world. These few figures about passive houses attest to that fact.
Passive houses in the world
Passive buildings in Portugal
First passive solar houses
Start of construction work of the first houses according to the Passivhaus standard (In Ilhavo, two semi-detached houses of 210 m2 each, consisting of a ground floor, a 1st floor and an attic)
Delivery of the Passivhaus label for the two houses in Ilhavo
Certification of the first house dedicated to the tourism sector
Certification of the last house in Portugal (to date)
Thermal requirements for certified houses in Portugal
- U(Lisboa) < 0,850 W/(m²K)
- U(Porto) < 0,432 W/(m²K)
- U(Lisboa) < 1,350 W/(m²K)
- U(Porto) < 1,350 W/(m²K)
- G-value glazing
- G(Lisboa) < 0,6
- G(Porto) < 0,6
- U(Lisboa) < 0,620 W/(m²K)
- U(Porto) < 0,202 W/(m²K)
- U(Lisboa) < 0,330 W/(m²K)
- U(Porto) < 0,155 W/(m²K)
U = The heat transfer coefficient (in W/m²K) represents the loss of heat from the inside to the outside.
G = The solar factor (in %) represents the fraction of solar energy that enters the building through the glazing.
Currently, about forty projects are being developed in Portugal and this number can only increase, in particular to meet the new European directives on buildings NZEB.