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--- basics:energy_and_ecology:primary_energy_quantifying_sustainability [2020/08/09 13:33] – [Primary energy – quantifying sustainability] wfeist
+++ basics:energy_and_ecology:primary_energy_quantifying_sustainability [2020/08/09 13:50] (current) – [Primary energy – quantifying sustainability] wfeist
@@ Line 2: / Line 2: @@
 The primary energy demand determines the impact on the environment. To be more exact:
-  * The total primary energy demand from non-renewable energy sources that is supplied to the building ((**There are many environmental effects of the use of not renewable energy**: consumption of limited resources, pollution of the atmosphere with harmful substances (e.g. CO<sub>2</sub>, other greenhouse gases), contamination of the water and soil (e.g. with radioactive waste materials), damage to the environment etc. At the moment, it is not possible to weigh up the various effects against one another and to adjust the risks quantitatively in relation to each other. **It is undoubtedly indisputable that there are very serious risks involved in each case** (climate change, proliferation of nuclear weapons, safety of future generations with regard to storage of nuclear waste).\\ **With renewable energy sources and energy efficiency, there are no risks of this magnitude** - at least, as long as attention is focussed on sustainable use (no deforestation for the purpose of obtaining fuel). **Within this context, the non-renewable demand for primary energy is currently a good quantifying factor for the overall damage to the environment through conventional energy use. Using solely CO<sub>2</sub> as a parameter for this purpose plays down the other risks and the significance of the resource situation.** Incidentally, this quantification approach has also become increasingly popular with other authors. The fact that non-renewable energy sources are, to a great extent, usually quickly substitutable by each other also speaks for this assessment– if certain risks become apparent, a widespread substitution effect should be expected. Today we do not know exactly which primary energy carriers (oil, gas, coal or uranium) actually will be used predominantly in the next decades – evaluation of the total primary energy applied will provide security against this additional uncertainty. In the future, however, at some time the energy will be generated more and more from renewable sources - and this will change the picture completely. After all, the risks and the environmental damage from renewable energy is far lower than these from fossil or nuclear sources - but we can not neglect, that renewable energy also needs resources (e.g. land use). The impact can be kept really small, as long as the overall renewable energy to be used is in a fair relation to the planetary resources. To have a measure for this, the passive house institute introduced the [[:Certification:The new Passive House Classes:The PER sustainability assessment|"primary energy renewable" PER]] as a new assessment method.
+  * The total primary energy demand from non-renewable energy sources that is supplied to the building ((**There are many environmental effects of the use of not renewable energy**: consumption of limited resources, pollution of the atmosphere with harmful substances (e.g. CO<sub>2</sub>, other greenhouse gases), contamination of the water and soil (e.g. with radioactive waste materials), damage to the environment etc. At the moment, it is not possible to weigh up the various effects against one another and to adjust the risks quantitatively in relation to each other. **It is undoubtedly indisputable that there are very serious risks involved in each case** (climate change, proliferation of nuclear weapons, safety of future generations with regard to storage of nuclear waste).\\ **With renewable energy sources and energy efficiency, there are no risks of this magnitude** - at least, as long as attention is focussed on sustainable use (no deforestation for the purpose of obtaining fuel). **Within this context, the non-renewable demand for primary energy is currently a good quantifying factor for the overall damage to the environment through conventional energy use. Using solely CO<sub>2</sub> as a parameter for this purpose plays down the other risks and the significance of the resource situation.** Incidentally, this quantification approach has also become increasingly popular with other authors. The fact that non-renewable energy sources are, to a great extent, usually quickly substitutable by each other also speaks for this assessment– if certain risks become apparent, a widespread substitution effect should be expected. Today we do not know exactly which primary energy carriers (oil, gas, coal or uranium) actually will be used predominantly in the next decades – evaluation of the total primary energy applied will provide security against this additional uncertainty. In the future, however, at some time the energy will be generated more and more from renewable sources - and this will change the picture completely. After all, the risks and the environmental damage from renewable energy is far lower than these from fossil or nuclear sources - but we can not neglect, that renewable energy also needs resources (e.g. land use). The impact can be kept really small, as long as the overall renewable energy to be used is in a fair relation to the planetary resources. To have a measure for this, the passive house institute introduced the [[:certification:passive_house_categories:per|"primary energy renewable" PER]] as a new assessment method.
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   * thus also for the household electricity in a residential house (shown in “yellow” in the following illustration).
-//Note: the current calculation method of the Energy Saving Regulations (EnEV) does not take the domestic electricity into account//.\\
+//Note 1: the current calculation method of the Energy Saving Regulations (EnEV) does not take the domestic electricity into account//.\\
+//Note 2: The world is furtunately substituting more and more not renewable energy sources by renewable energy sources. These source do have much less dangerous environmental impacts; but these also need some limited resources (e.g. land use). In the future, it will become more and more important, to design an energy system in a way, that the renewable energy generation can be kept within sustainable limits. This is, what the new [[:certification:passive_house_categories:per|"primary energy renewable" PER]] method has been developed for.
+//\\
 \\
 |{{ :picopen:primaerenergiekennwertvergleich_k.png?390 }}|