The 2010 Energy Performance of Buildings Directive (EPBD recast) established that all new buildings have to reach, by the end of 2020, the nearly-Zero Energy (nZEB) target as set by the Member States. However, in addition to the economic efficiency, the non-monetary added value of the system in the form of a more homogeneous heat output, more ecological building materials, less stress for the inhabitants due to the minimally invasive approach, reduced use of floor space and increased sound insulation due to the sound insulation façade, should also be taken into account in the decision-making process. Since the current implementation is still a prototypical one, cost-saving potential is expected on basis of the experience of the executing companies. In order for the system to become economically competitive, the erection costs regarding the façade system and the associated building technology must be reduced by 36 %, assuming that the nominal follow-up costs remain the same. Although the follow-up costs approximate the life-cycle costs after a period of 50 years in this analysis, the additional erection costs of the minimally invasive refurbishment approach cannot be compensated. In this project, life-cycle costs of a minimally invasive refurbishment with component activation are compared with those of a standard refurbishment approach with an external thermal insulation composite system (ETICS) and radiators. Life-cycle cost analysis is a common method for assessing the economic viability of buildings over their entire life-cycle. The decision on constructing or renovating buildings is often based on construction costs consequently, follow-up costs are not considered. Furthermore, an operative methodology to achieve the best conditions towards optimal cost nZEBs has been set-up. As a result, an international database for benchmarking actual nZEB life cycle costs (LCC) including urban and building planning, construction, commissioning, operation, maintenance, management, end-of-life, has been developed. The primary goal is to identify and eliminate the extra costs for nZEBs related to processes, technologies, building operation and to promote innovative business models considering the cost-effectiveness for all stakeholders in the building's lifecycle. The EU Horizon project CRAVEzero focuses on proven and new approaches to reduce the costs of nZEBs at all stages of the life cycle. Cost-effective integration of efficient solution sets and renewable energy systems are the major challenges. While nZEBs realised so far have clearly shown that the nearly zero-energy target can be achieved using existing technologies and practices, most experts agree that a broad-scale shift towards nearly zero-energy buildings requires significant adjustments to current building market structures.
ALON KOLLMANN FACEBOOK FRIEND MAPPER DRIVERS
These will be significant drivers in the construction sector in the next few years because all new buildings in the EU from 2021 onwards have to be nearly zero energy buildings (nZEBs) public buildings need to achieve the standard already by 2019. The individual action steps must therefore be optimized in such a way that it is clearly defined for all stakeholders when and with which partner to interact.Ĭost optimal and nearly zero-energy performance levels are principles initiated by the European Union's Energy Performance of Buildings Directive, which was recast in 2010.
ALON KOLLMANN FACEBOOK FRIEND MAPPER PLUS
In order to achieve this, the focus of every construction project, especially nearly zero energy and plus energy buildings, must be on integral planning. In this way, an attempt is made to achieve process optimization with the aid of various methods from management consultancy. This is focused in the thesis "Stakeholder related fields of action for process optimization of nearly zero energy and plus energy buildings".
In order to prevent the resulting barriers, it is essential that the previous processes for such an implementation are analysed and the individual steps are optimized to such an extent that a goal-oriented and cost-efficient cooperation is possible.
This is particularly important because disagreements and lack of communication between the stakeholders often lead to problems, which delay planning and implementation and lead to additional costs. In order to be able to guarantee a regulated process in the design of nearly zero and plus energy buildings, it is important that all relevant stakeholders are involved from the beginning of the project.
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