A Passive House that consumes less than it says on the tin?
Wow! A Passivhaus that consumes less than predicted by the PHPP!. Olloki is a single-family home in Navarra, northern Spain, which I recently certified to Passivhaus Plus standard.
A Passive House that consumes less than it says on the tin?
Wow! A Passivhaus that consumes less than predicted by the PHPP!
Olloki is a single-family home in Navarra, northern Spain, which we recently certified to Passivhaus Plus standard.
Designed by Pedro Mariñelarena Albéniz of IM Arquitectos Urbanistas, the house is built with honeycomb brick walls with 18cm of external thermal insulation, and 20cm of insulation on the roof. Triple glazed low-e windows are shaded in the summer with venetian blinds that have variable slat angles, so the occupants can find the right balance between solar control and daylighting.
A Zehnder Group Ibérica ComfoAir Q350 HRV mechanical ventilation with heat recovery system guarantees good air quality and removes pollutants and excess moisture from the indoor environment. A Daikin air-source heat pump powers the underfloor heating system and produces hot water. A 7,2 kWp solar roof mounted PV array generates around 8.600 kWh/a.
The occupants are super happy with the comfort and air quality of the house
But perhaps one of the best things about this home (…at least from our point of view as Certifiers!), is that it actually consumes LESS than predicted in the PHPP (this is without calibrating the PHPP with measured temperature setpoints, occupation, outdoor climate data etc…).
Total energy consumption and solar PV generation PHPP vs. measured average 2022-2024
Let’s have a look at the data:
- The PHPP calculation predicts the home will consume 6,294 kWh/a.
- The average measured energy consumption between 2022-2024 is 5,825 kWh/a.
Awesome!
- The PHPP calculation predicts the home will generate 8,614 kWh/a of solar PV energy.
- The average measured PV generation between 2022-2024 is 8,867 kWh/a.
Doubly awesome!
In the words of the A-Team chief, John ‘Hannibal’ Smith:
“I love it when a plan comes together”
