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basics:energy_and_ecology:primary_energy_renewable_per [2025/03/27 10:11] – [Read also] yaling.hsiao@passiv.debasics:energy_and_ecology:primary_energy_renewable_per [2025/10/16 14:37] (current) – [Passive House Classes] yaling.hsiao@passiv.de
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-====What is Primary energy renewable?====+==== What is Primary energy renewable? ====
  
-Renewable primary energy (PER) is the unit of energy generated from renewable resources, e.g. electricity produced by a photovoltaic system / wind turbine or heat generated with a solar thermal system. PER-factors reflect the primary renewable resources needed to cover the final energy demand of a building, including distribution and storage losses. In the case of a PER-factor of 1.5, a surplus of 50% renewable primary energy is needed to be able to meet the final energy demand at the building. The higher the PER-factor, the higher the required resources and therefore the more important the implementation of efficiency measures in order to avoid compensation from non-renewable sources. +Renewable primary energy (PER) is the unit of energy generated from renewable resources, e.g. electricity produced by a photovoltaic system / wind turbine or heat generated with a solar thermal system. PER-factors reflect the primary renewable resources needed to cover the final energy demand of a building, including distribution and storage losses. In the case of a PER-factor of 1.5, a surplus of 50% renewable primary energy is needed to be able to meet the final energy demand at the building. The higher the PER-factor, the higher the required resources and therefore the more important the implementation of efficiency measures in order to avoid compensation from non-renewable sources.
  
-With the PER system, the energy transition to 100 % primary energy supply from renewable resources is anticipated. The new assessment methodology does not promote the simple annual offset of on-site energy demand and energy production in the context of individual buildings. The achieved level of energy efficiency and renewable energy supply need to be assessed independently of one another. Direct offsetting disregards important aspects, such as energy losses due to storage and space availability for renewable energy production. +With the PER system, the energy transition to 100 % primary energy supply from renewable resources is anticipated. The new assessment methodology does not promote the simple annual offset of on-site energy demand and energy production in the context of individual buildings. The achieved level of energy efficiency and renewable energy supply need to be assessed independently of one another. Direct offsetting disregards important aspects, such as energy losses due to storage and space availability for renewable energy production.
  
-Within the PER system, the energy demand of buildings is analysed in an environment of a solely renewable energy supply network. Depending on the type of energy application, as well as on the locally available renewable energy resources, the amount of required storage varies, and thus the associated losses. Based on these interrelationships, weighting factors, the so-called PER factors are derived and used as indicator as to which energy applications are the most resource intensive.  +Within the PER system, the energy demand of buildings is analysed in an environment of a solely renewable energy supply network. Depending on the type of energy application, as well as on the locally available renewable energy resources, the amount of required storage varies, and thus the associated losses. Based on these interrelationships, weighting factors, the so-called PER factors are derived and used as indicator as to which energy applications are the most resource intensive. In this way, PER factors depend only on the location of the building, the application (e.g. heating, cooling or specific electricity), and the final energy carrier. They do not depend on the actual supply system. They are local physical parameters, such as climate data. In practice, they are automatically provided with the PHPP, in the same way the climate data sets are.
-In this way, PER factors depend only on the location of the building, the application (e.g. heating, cooling or specific electricity), and the final energy carrier. They do not depend on the actual supply system. They are local physical parameters, such as climate data. In practice, they are automatically provided with the PHPP, in the same way the climate data sets are.+
  
-[[certification:passive_house_categories:per|PER-factors for electricity use]]+[[:certification:passive_house_categories:per|PER-factors for electricity use]]
  
-[[basics:passive_house_-_assuring_a_sustainable_energy_supply:passive_house_the_next_decade|Passive House – the next decade.]]+[[..:passive_house_-_assuring_a_sustainable_energy_supply:passive_house_the_next_decade|Passive House – the next decade.]]
  
-{{ :picopen:per_sustainable_energy_supply.pdf |PER - The assessment for a sustainable energy supply - 1 Page Information for download}}+[[basics:energy_and_ecology:primary_energy_renewable_per:AK56 PER system|AK56: Primary energy evaluation in a renewable energy supply: the PER system]] 
 + 
 +{{:picopen:per_sustainable_energy_supply.pdf|PER - The assessment for a sustainable energy supply - 1 Page Information for download}}
  
  
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 It is essential to note that the functional definition of the Passive House standard remains unchanged and is the same for all three Passive House classes (relating to useful energy demand for heating and cooling, as well as airtightness and comfort criteria). For the three classes, thresholds for PER demand are defined as well as for PER generation. The demand includes all energy applications in a building i.e. the heating and cooling energy, as well as hot water, the complete electricity demand, and any auxiliary electricity to provide the energy services. The higher the achieved level of overall efficiency and of renewable energy generation, the higher the Passive House class according to the thresholds as listed in Table 1. This makes the Passive House an ideal blueprint for the NZEB standard.  It is essential to note that the functional definition of the Passive House standard remains unchanged and is the same for all three Passive House classes (relating to useful energy demand for heating and cooling, as well as airtightness and comfort criteria). For the three classes, thresholds for PER demand are defined as well as for PER generation. The demand includes all energy applications in a building i.e. the heating and cooling energy, as well as hot water, the complete electricity demand, and any auxiliary electricity to provide the energy services. The higher the achieved level of overall efficiency and of renewable energy generation, the higher the Passive House class according to the thresholds as listed in Table 1. This makes the Passive House an ideal blueprint for the NZEB standard. 
  
-[{{:picopen:per_landing_table_1.png?direct|**Table 1: Requirements for the Passive House classes with respect to the overall energy efficiency and renewable energy generation**}}]+{{ :picopen:haeusergrafik_komplett_en_2025_mb_quer-01.jpg?650 |}} 
 + 
 +[{{ :picopen:per_landing_table_1.png?direct |**Table 1: Requirements for the Passive House classes with respect to the overall energy efficiency and renewable energy generation**}}]
  
  
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 ===== Read also ===== ===== Read also =====
- 
-[[phi_publications:nr.56_energy_efficiency_and_renewable_energy]] 
  
 [[:planning:tools:outphit_pv_economy_evaluation|PV Economy Evaluation Tool ]] [[:planning:tools:outphit_pv_economy_evaluation|PV Economy Evaluation Tool ]]
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 [[.:energia_primaria_renovable_per|Spanish PER page]]. [[.:energia_primaria_renovable_per|Spanish PER page]].
 +
 +[[phi_publications:nr.56_energy_efficiency_and_renewable_energy]]
 +
 +[[phi_publications:nr.56_energy_efficiency_and_renewable_energy_past_and_present]]
 +
 +[[phi_publications:nr.56_efficiency_standards_for_a_climate_neutral_building_stock]]
 +
  
  
  
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