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--- certification:passive_house_categories [2025/10/16 14:34] – [The Passive House Classes: Classic, Plus and Premium] yaling.hsiao@passiv.de
+++ certification:passive_house_categories [2025/10/16 14:34] (current) – [Renewable energy generation] yaling.hsiao@passiv.de
@@ Line 30: / Line 30: @@
 Instead of off-setting energy demand and energy generation, the Passive House concept rates both aspects independently of one another. The energy demand is measured against the value of the service, which is represented by the useful space of the building, the so-called “Treated floor area (TFA)”. The renewable generation is measured against the area that the building occupies and that is therefore longer available for other uses: the “Projected building footprint (PBF)”. This approach of independent assessment of the efficiency level (with respect to the living area) and the energy generation (with respect to the projected footprint area) encourages optimised solutions for both parameters. Regardless of whether the building is a bungalow or an office tower, it is ensured that the energy input needed for health and comfort is low and the energy output with respect to the locally available renewable resources is high. Bungalows will automatically become “plus-energy” houses in many cases, whilst high-rises will not be penalised for not achieving “net-zero”.
-[{{:picopen:per_landing_fig_5.png?nolink&943x212 |**In both situations shown the total living space is the same, provided by three single family homes (left) or one multifamily building (right). It is much easier for a single family houses to achieve a net-zero energy balance because of the larger roof space, which puts the multifamily building at a disadvantage. In the PER methodology energy generation is assessed based in the individul building's footprinta area. Assuming the buildings have the same efficiency level, the multifamily can achieve the same PH Class rating as a single family house. © PHI**}}]
+[{{ :picopen:per_landing_fig_5.png?nolink&943x212 |**In both situations shown the total living space is the same, provided by three single family homes (left) or one multifamily building (right). It is much easier for a single family houses to achieve a net-zero energy balance because of the larger roof space, which puts the multifamily building at a disadvantage. In the PER methodology energy generation is assessed based in the individul building's footprinta area. Assuming the buildings have the same efficiency level, the multifamily can achieve the same PH Class rating as a single family house. © PHI**}}]
-[{{:picopen:per_generationpbf_bronwynbarry.jpg?nolink&600|**Using the projected building footprint (PBF) as reference area provides an equitable approach for renewable energy generation. © Bronwny Barry [[https://blog.passivehouse-international.org/renewable-energy-future/|Our all-renewable energy future: Passive House Plus & Premium]]** }}]
+[{{ :picopen:per_generationpbf_bronwynbarry.jpg?nolink&600 |**Using the projected building footprint (PBF) as reference area provides an equitable approach for renewable energy generation. © Bronwny Barry [[https://blog.passivehouse-international.org/renewable-energy-future/|Our all-renewable energy future: Passive House Plus & Premium]]** }}]
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