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basics:energy_and_ecology:primary_energy_renewable_per [2025/03/27 10:10] – [Read also] yaling.hsiao@passiv.debasics:energy_and_ecology:primary_energy_renewable_per [2025/05/26 15:12] (current) – [What is Primary energy renewable?] 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]] 
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 +{{:picopen:per_sustainable_energy_supply.pdf|PER - The assessment for a sustainable energy supply - 1 Page Information for download}}
  
  
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 +[[phi_publications:nr.56_efficiency_standards_for_a_climate_neutral_building_stock]]
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basics/energy_and_ecology/primary_energy_renewable_per.1743066657.txt.gz · Last modified: by yaling.hsiao@passiv.de