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basics:affordability:life_cycle_cost_analysis_of_energy_interventions_in_18_reference_buildings

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basics:affordability:life_cycle_cost_analysis_of_energy_interventions_in_18_reference_buildings [2015/08/06 12:26]
kdreimane
basics:affordability:life_cycle_cost_analysis_of_energy_interventions_in_18_reference_buildings [2019/02/28 09:46] (current)
cblagojevic
Line 85: Line 85:
 ====== Conclusions ====== ====== Conclusions ======
   * Maximal insulation within the existing construction without replacement of window frames and replacement with Hr++ glazing in all housing types leads to a reduction of the Total Cost of Ownership.   * Maximal insulation within the existing construction without replacement of window frames and replacement with Hr++ glazing in all housing types leads to a reduction of the Total Cost of Ownership.
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   * Retrophit according to the Passive House Standard in most cases can be realised against the same costs with regard to the TCO if the average in-house temperature is not raised. If the average in-house temperature is raised to 20°C the TCO rises considerably as a result of the costs for energy consumption,​ but at the same time, comfort is increased.   * Retrophit according to the Passive House Standard in most cases can be realised against the same costs with regard to the TCO if the average in-house temperature is not raised. If the average in-house temperature is raised to 20°C the TCO rises considerably as a result of the costs for energy consumption,​ but at the same time, comfort is increased.
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   * The amount of window frames has considerable impact on the financial feasibility to reach passive house standard.   * The amount of window frames has considerable impact on the financial feasibility to reach passive house standard.
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   * For all types of houses, PV-panels play an important role in the economic feasibility of an energetic retrophit. A retrophit of houses that are suited for installation of photovoltaic panels oriented to the south, east or west, are more profitable.   * For all types of houses, PV-panels play an important role in the economic feasibility of an energetic retrophit. A retrophit of houses that are suited for installation of photovoltaic panels oriented to the south, east or west, are more profitable.
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   * It is necessary that the current regulation for balancing the electricity remains or is adapted in a resident-friendly way, otherwise an energy transition to energy neutral retrophit cannot be realised (with regard to housing costs.   * It is necessary that the current regulation for balancing the electricity remains or is adapted in a resident-friendly way, otherwise an energy transition to energy neutral retrophit cannot be realised (with regard to housing costs.
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   * Houses that are renovated with a new envelope, causes a considerable investment, which currently cannot be earned back by means of the energy savings. It is necessary to scale up and innovate new facade elements and rooftop elements, so that prices will decrease. In All-electric houses, the application of a heat pump is profitable. As a result of the Seasonal Performance Factor) of thermodynamic heat pumps, in most cases these proved to be the most economic choice.   * Houses that are renovated with a new envelope, causes a considerable investment, which currently cannot be earned back by means of the energy savings. It is necessary to scale up and innovate new facade elements and rooftop elements, so that prices will decrease. In All-electric houses, the application of a heat pump is profitable. As a result of the Seasonal Performance Factor) of thermodynamic heat pumps, in most cases these proved to be the most economic choice.
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   * Maximal insulation within the existing construction offers highest profits.   * Maximal insulation within the existing construction offers highest profits.
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   * Not using natural gas is only possible if there is sufficient room for solar panels.   * Not using natural gas is only possible if there is sufficient room for solar panels.
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   * Solar collectors are only financially profitable compared with electricity-only concept.   * Solar collectors are only financially profitable compared with electricity-only concept.
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   * Wind turbines are economically not profitable.   * Wind turbines are economically not profitable.
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   * As a result of the current electricity balance regulations,​ storage of electricity is not profitable.   * As a result of the current electricity balance regulations,​ storage of electricity is not profitable.
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   * The difference between investing in standard window frames and passive house window frames currently is too high. If window frames need to be replaced, a standard window frame is the best choice. It is necessary to decrease prices substantially by scaling up an innovation of Passive House profile systems.   * The difference between investing in standard window frames and passive house window frames currently is too high. If window frames need to be replaced, a standard window frame is the best choice. It is necessary to decrease prices substantially by scaling up an innovation of Passive House profile systems.
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   * Triple glass in most cases is financially profitable compared to Hr++ glazing and justifies €1000 extra for adapting the existing window frames. ​   * Triple glass in most cases is financially profitable compared to Hr++ glazing and justifies €1000 extra for adapting the existing window frames. ​
  
basics/affordability/life_cycle_cost_analysis_of_energy_interventions_in_18_reference_buildings.txt · Last modified: 2019/02/28 09:46 by cblagojevic