Study "Cost Relevance of Energy Standards in Residential Construction
Published
of the city of Freiburg im Breisgau
Contractor: Joachim Eble Architecture, Rolf Messerschmidt, Tübingen
EGS-Plan engineering company for energy, building and solar technology mbH
IER Institute for Energy Economics and Rational Use of Energy, University of Stuttgart
Results: When analysing the total annual costs, the running costs and revenues in the utilisation phase are taken into account in addition to the capital-related investment costs. The result of this full cost calculation is a relatively homogeneous cost level for all building energy standards examined. Due to the subsidies for the better standards, lower energy costs and the use of subsidies, the cost level remains relatively constant among the building energy standards. Thus, higher building energy standards up to the "KfW 40 Plus Standard" are already economically attractive today.
The influence of building energy standards can be classified as subordinate when considering total consumer spending.
In its 2.10.2017 published opinion the German Advisory Council on the Environment calls on the incoming German government to initiate the coal phase-out without delay. The upcoming legislative period offers the last chance to set the course for an appropriate implementation of the Paris climate goals in Germany.
"Germany must reduce power generation from coal as quickly as possible and end it in the medium term, otherwise the climate targets in Germany cannot be achieved. The structurally compatible coal phase-out should therefore be initiated immediately. The last power plant must be taken off the grid in 20 years at the latest," explains Prof. Claudia Kemfert.
The basis of the coal phase-out should be a budget of the total amount of greenhouse gases that may still be emitted by coal-fired power plants until their final shutdown. This amount should be fixed by law. "From a scientific point of view, the remaining emissions budget for coal-fired power generation in Germany should be 2,000 megatonnes of CO2 Prof. Wolfgang Lucht specifies.
In its report, the SRU proposes a phase-out in three phases: The most emission-intensive power plants should be taken off the grid by 2020. On this basis, more modern plants could continue to operate at reduced capacity until about 2030 to ensure security of supply and to preserve jobs. In the 2030s, these power plants should then also be decommissioned. The federal government must now define the framework for this.
Climate protection and the shaping of structural change must go hand in hand. A long-term and structured phase-out path offers those affected planning security and can ensure that the burden is shared as fairly as possible. The phase-out path and its structural policy support should therefore be discussed in a commission together with the affected regions, companies, trade unions and environmental protection associations.
The German Advisory Council on the Environment (SRU) has been advising the German government on environmental policy issues for almost 45 years. The Council's composition of seven professors from different disciplines ensures a scientifically independent and comprehensive assessment, both from a scientific and technical perspective as well as from an economic, legal and health science perspective.
The Council currently consists of the following members:
Prof. Dr Claudia Hornberg (Chair), Bielefeld University
Prof. Dr Manfred Niekisch (Vice-Chairman), Goethe University and Frankfurt Zoological Garden
Prof. Dr. Christian Calliess, Free University of Berlin
Prof. Dr. Claudia Kemfert, Hertie School of Governance and German Institute for Economic Research
Prof. Dr Wolfgang Lucht, Humboldt University Berlin and Potsdam Institute for Climate Impact Research
Prof. Dr.-Ing. Lamia Messari-Becker, University of Siegen
Prof. Dr.-Ing. Vera Susanne Rotter, Technical University Berlin
German Advisory Council on the Environment, Berlin www.umweltrat.de
The Ministry for the Environment, Climate and Energy Management of Baden-Württemberg is again supporting investments in photovoltaic systems in combination with battery storage with a total of five million euros in the coming year.
It is thus responding to the enormous demand. Since the launch of the "Grid-serving photovoltaic battery storage" funding programme in March of this year, over 2,500 applications have been received. The programme is part of the state government's solar offensive. It ends on 31 December 2019.
"The expansion of battery storage systems has increased significantly. This benefits the climate and the economy in the state. It is important to me to maintain this momentum," said Environment and Energy Minister Franz Untersteller in Stuttgart today (14 December). The state is therefore happy to support investments in solar battery storage.
The Ministry of the Environment draws attention to the fact that the subsidy rates will decrease as planned on 1 January 2019. From the new year, there will be a subsidy of 200 euros (instead of the previous 300 euros) per kWh for storage units in connection with a photovoltaic system with a nominal output of up to 30 kilowatt peak, and 300 euros (instead of 400 euros) per kWh for larger storage units.
As a result of an expert hearing, new funding conditions will apply from 1 February 2019. Investors will receive a bonus of 500 euros for grid-serving charging stations for electric vehicles. The bonus for forecast-based battery management systems, on the other hand, will no longer apply. Photovoltaic systems between ten and 14 kilowatt peak will receive an additional one-time subsidy of 400 euros from the Ministry. Further changes concern the minimum installation ratio and the active power limitation. In addition, the support programme will be opened up to farmers.
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