ᐅ Subsidies / Payback Period Based on Which Energy Standard?
Created on: 13 Feb 2015 09:02
H
Häuslebau3r
Häuslebau3r13 Feb 2015 09:02Good morning everyone,
Due to my current situation and the other related topics I am interested in and currently dealing with, I thought it might be helpful to create a dedicated thread about the various “most commonly used” building methods (energy standards). From individual topics and posts, I have already gathered some information from the forum. After attending a lecture on “Energy-Efficient Building” this week, a few more questions have come up that might also be helpful for others. I want to point out that the information below is so far based only on research, and I would appreciate some practical insights, as these often differ from theory.
The most commonly used energy standards for me currently are:
- KfW 70, KfW 55, KfW 40, Passive House.
What I am currently concerned with is the approach and methods to achieve these different standards, and whether it is even possible to compare the cost-benefit factor. Is it possible to specify a percentage or a timeframe after which a house built to a higher energy standard pays off compared to a “normal” house?
Subsidies:
- For KfW 70 / 55 / 40, different interest rates apply, which are adjusted according to the current market. For KfW 70, this is currently a loan interest rate of 1% for an amount of €50,000 (approximately $50,000).
- For KfW 55 / 40, a loan of €50,000 (approximately $50,000) is available at a current interest rate of 0.75%, plus a repayment grant of €2,500 (approximately $2,500).
- Passive House qualifies for the same subsidies as KfW 55.
Regional subsidies are not included and should be inquired about locally.
The current energy standards are linked to the regulations of the Energy Saving Ordinance (Energieeinsparverordnung). These regulations are updated periodically, and the current case addresses the 2016 Energy Saving Ordinance.
From January 1, 2016, this means the following:
- Building Energy Efficiency: The maximum allowable annual primary energy demand (for heating, hot water, ventilation, cooling, and for non-residential buildings also for installed lighting) decreases by 25 percent compared to the current 2009 Energy Saving Ordinance, or the upcoming versions.
- Thermal Insulation of the Building Envelope: The maximum allowed average heat loss through the building envelope decreases by about 20 percent compared to the current 2009 Energy Saving Ordinance, or the upcoming 2014 version.
Furthermore, for constructing a house to the KfW 70 standard, an energy consultant’s on-site monitoring is also required. Previously, this was only mandatory for KfW 55 and higher standards. According to a local construction company, the additional costs for the energy certificate and on-site energy consultant for KfW 70 amount to about €350 (approximately $350) + €2,300 (approximately $2,300). These figures may vary.
My question now is: how or what (how) would one need to build (perhaps invest more on average) to achieve the respective standards?
Is a Passive House built with traditional masonry construction even feasible? From what I understand, you would need very thick wall widths or external insulation to meet the standard if you do not want to use prefabricated construction.
Do I also need a ventilation system in a KfW 70 house, or is this only necessary due to the high insulation levels starting with KfW 55 / 40 / Passive House?
I would appreciate any further information and comments on this topic.
Due to my current situation and the other related topics I am interested in and currently dealing with, I thought it might be helpful to create a dedicated thread about the various “most commonly used” building methods (energy standards). From individual topics and posts, I have already gathered some information from the forum. After attending a lecture on “Energy-Efficient Building” this week, a few more questions have come up that might also be helpful for others. I want to point out that the information below is so far based only on research, and I would appreciate some practical insights, as these often differ from theory.
The most commonly used energy standards for me currently are:
- KfW 70, KfW 55, KfW 40, Passive House.
What I am currently concerned with is the approach and methods to achieve these different standards, and whether it is even possible to compare the cost-benefit factor. Is it possible to specify a percentage or a timeframe after which a house built to a higher energy standard pays off compared to a “normal” house?
Subsidies:
- For KfW 70 / 55 / 40, different interest rates apply, which are adjusted according to the current market. For KfW 70, this is currently a loan interest rate of 1% for an amount of €50,000 (approximately $50,000).
- For KfW 55 / 40, a loan of €50,000 (approximately $50,000) is available at a current interest rate of 0.75%, plus a repayment grant of €2,500 (approximately $2,500).
- Passive House qualifies for the same subsidies as KfW 55.
Regional subsidies are not included and should be inquired about locally.
The current energy standards are linked to the regulations of the Energy Saving Ordinance (Energieeinsparverordnung). These regulations are updated periodically, and the current case addresses the 2016 Energy Saving Ordinance.
From January 1, 2016, this means the following:
- Building Energy Efficiency: The maximum allowable annual primary energy demand (for heating, hot water, ventilation, cooling, and for non-residential buildings also for installed lighting) decreases by 25 percent compared to the current 2009 Energy Saving Ordinance, or the upcoming versions.
- Thermal Insulation of the Building Envelope: The maximum allowed average heat loss through the building envelope decreases by about 20 percent compared to the current 2009 Energy Saving Ordinance, or the upcoming 2014 version.
Furthermore, for constructing a house to the KfW 70 standard, an energy consultant’s on-site monitoring is also required. Previously, this was only mandatory for KfW 55 and higher standards. According to a local construction company, the additional costs for the energy certificate and on-site energy consultant for KfW 70 amount to about €350 (approximately $350) + €2,300 (approximately $2,300). These figures may vary.
My question now is: how or what (how) would one need to build (perhaps invest more on average) to achieve the respective standards?
Is a Passive House built with traditional masonry construction even feasible? From what I understand, you would need very thick wall widths or external insulation to meet the standard if you do not want to use prefabricated construction.
Do I also need a ventilation system in a KfW 70 house, or is this only necessary due to the high insulation levels starting with KfW 55 / 40 / Passive House?
I would appreciate any further information and comments on this topic.
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