Short info: "How will our cities develop? And who actually determines this - the city administration alone or also the citizens? In three European metropolises the reportage City of the Future - Future of the City looks for answers: In London we get to know the concept of the city as a profit-oriented enterprise that has to prove itself in global competition with other metropolises. In Hamburg, we follow the transformation of a problem neighbourhood as part of the IBA 2013, while the residents of a small, still original artists' quarter create their own living space. In Madrid, the problems of a constantly growing city are becoming concrete: an illegally built district has emerged just 20 kilometres from the city centre, which the residents manage independently. The area has become economically interesting for the city of Madrid in recent years. So the authorities have houses demolished - leaving families on the street. But there is resistance."
Running time: 45 min.
Year of production: 2013
Media type: DVD
Language version: de, en
On the one hand, more and more old office buildings and office parks are losing their function. On the other hand, there is a great demand for living space in cities and agglomerations. This publication shows the opportunities, but also the difficulties, associated with the conversion of this particular building typology.
The conversion of office properties certainly represents only a very small and special segment of our urban development. But it deserves more attention, both in terms of the history behind this inconspicuous building task and in terms of the future potential that we are far from having exhausted. The conversion of this particular building stock is a serious alternative to demolition and new construction.
Seven practical examples show how diverse and varied office building conversion projects are. From historic individual properties to modern office districts, the framework conditions are often very different. However, it is precisely by dealing with the existing buildings that they can develop new qualities for their surroundings (Lyoner Viertel, Frankfurt; Büropark Seestern, Düsseldorf; O-Werk, Bochum; Goltsteinforum, Cologne; Beginenhof, Essen; Gerling Hochhaus, Cologne; Hochhaus an der Baierbrunner Straße, Munich).
The study commissioned by StadtBauKultur NRW was prepared in cooperation with the ILS - Institute for Regional and Urban Development Research.
Since February 2017, the houses of Chiemgauer Holzhaus have been awarded the RAL quality mark GZ 425. The solid wood houses achieve a GWP (Global Warming Potential) value of less than zero in their carbon footprint. This was tested by the "Gütegemeinschaft CO2 neutrale Bauwerke in Holz e.V.".
Taking into account all the necessary materials, such as concrete foundation, roof tiles, glass windows, etc., this means in the case of a solid wood house with approx. 150 m² of living space an CO2 reduction capacity of approx. 23,000 kg!
By comparison, a conventionally built house with bricks and otherwise the same conditions pollutes the environment with 24,000 kg of CO2. (Source: www.chiemgauer-holzhaus.de/
Certification of CO2 neutral solid wood buildings
Every building generates a verifiable "Global Warming Potential" (GWP) during the production of the building materials and during construction, which is primarily caused by the energy consumption during production. The aim of the new quality association is to certify solid timber buildings whose manufacturing energy balance has a GWP value of less than zero. This means that a manufactured solid wood building is at least CO2 neutral, or even has a CO2-reducing effect. For this purpose, the "German Institute for Quality Assurance and Labelling" (RAL) approved the "Quality Mark CO2 Reducing Wooden Structures" in 2015, which is awarded by the "Quality Association CO2 Neutral Structures in Wood". The quality mark has a modular structure and currently includes Part A of the EPDs as a component and basis. As soon as further European-recognised and standardised product indicators are available up to the disposal of a material, the quality mark will be extended with the same criteria in order to ensure a holistic view.
The basis of the "Quality mark for CO2-reducing timber structures" is timber from sustainable forestry. The more wood is used in construction and the more trees are replanted accordingly, the greater the CO2 reduction in our climate, both in the short and long term. The prerequisite for the award of the quality mark is the calculation and documentation of the EPDs as well as external monitoring according to the strict criteria of RAL.
INFOS:
Quality Association for CO2-neutral Buildings in Wood e.V., Munich
Internet: www.wood-co2.eu
In the context of the Green Deal, the EU's tightened targets on the path to climate neutrality envisage a reduction in CO2 emissions of 55% by 2030 and 100% by 2050. Against the background of these tightened parameters, the question arises as to the impact on the energy transition in Germany. Based on its energy system model REMod, Fraunhofer ISE has calculated the consequences of the new EU targets for the expansion of renewable energies in Germany and now presents the results in a short study.
In February 2020, Fraunhofer ISE presented the study "Pathways to a Climate-Neutral Energy System - The Energy Transition in the Context of Societal Behaviour", which investigated the influence of societal behaviour on possible transformation paths of the German energy system towards an almost complete reduction of energy-related CO2-emissions in the year 2050. The calculations carried out with the REMod energy system model were based on the targets set by the German government at the time of preparation, i.e. a reduction in German CO2-emissions by 55% in 2030 and 95% in 2050 compared to 1990.
In response to the tightening of the European targets from 40% to 55% by 2030, which has now been implemented as part of the European Green Deal, the Institute has recalculated. The transformation paths for Germany considered in the February study were revised with a view to reducing Germany's CO2-emissions of 65% in 2030 and complete climate neutrality of the energy system in 2050. The scientists from Freiburg recalculated all scenarios of their study from February (reference, insistence on conventional technologies, unacceptance of large infrastructure measures, sufficiency). As an additional aspect, they added an investigation of the sensitivity for import prices of green hydrogen and synthetic fuels. The short study mainly considers the reference scenario in order to be able to go into more detail on the changes caused by the target tightening. However, the study also identifies corridors for the expansion of a variety of technologies that can be derived from different scenarios. In the case of photovoltaics and wind, annual additions of 10-14 GW and 9 GW respectively are required by 2030 in order to achieve sufficient CO2-free electricity for Germany.
"The update of our energy end-use study shows that achieving the climate protection targets, even with a greater reduction in greenhouse gas emissions than previously assumed, is feasible from a technical and systemic point of view, albeit with greater efforts," says Dr Christoph Kost, head of the Energy Systems and Energy Economics Group and author of the short study. "A target tightening of energy-related CO2-emissions leads to a higher direct or indirect use of renewably generated electricity in the consumption sectors. This in turn requires a much greater expansion of wind and solar power generation facilities." Furthermore, the short study shows that the expansion of fluctuating renewable energies requires a strong expansion of system flexibility.
If we want to achieve a reduction in CO2emissions by 65% by 2030, battery-electric vehicles must account for 30-35% of passenger transport in the mobility sector, for example. In a climate-neutral energy system by 2050, conventional internal combustion engines will be virtually eliminated from passenger car transport as well as from freight transport.
"Heat pumps - used in households or to supply district heating networks - must become a key technology for heat supply with immediate effect," says Institute Director Prof. Dr. Hans-Martin Henning, summarising the results for the building sector. With a view to the CO2-avoidance costs, he adds: "The tightening of the target used here leads to an increase in CO2-avoidance costs. However, these depend to a large extent on the development of final energy demand."
Link to the study "Pathways to a climate-neutral energy system - The energy transition in the context of societal behaviour", February 2020, update December 2020:
29.12.20 CO2 offsets of the state administration flow into foundation
The state of Baden-Württemberg is setting an example in climate protection: by 2040 at the latest, the state administration is to operate in a climate-neutral manner. The new Climate Protection Foundation supports it in this by using the interest on its share capital to promote research and development as well as educational projects in the field of climate protection. In addition, the state, municipalities, companies and all citizens can offset their CO2 emissions through compensation payments and thus become climate neutral. The cooperation partner will be the non-profit climate protection organisation myclimate Germany.
Stuttgart, December 29, 2020 - On January 1, 2021, the new Climate Protection Foundation under the umbrella of the Baden-Württemberg Foundation will officially begin its work. The Baden-Württemberg Climate Protection Foundation is endowed with a capital of 49.5 million euros and supports the state administration in its goal of climate neutrality by 2040, offsetting the CO2 emissions of official air travel of state ministries, subordinate authorities and universities. Companies, districts and municipalities as well as all citizens can also make compensation payments to the foundation. For the simple calculation and direct compensation of CO2 emissions, the state is currently having an app developed under the leadership of the Ministry of the Interior. The assets of the Climate Protection Foundation are invested sustainably by the Baden-Württemberg Ministry of Finance as part of the asset management of the Baden-Württemberg Foundation. Further information, including the foundation's statutes, can be found at Klimaschutzstiftung BadenWürttemberg - BW Foundation.
"I am very pleased that we can now get started with the Baden-Württemberg Climate Protection Foundation. We must not neglect the international climate goals even in times of the Corona pandemic - and with the Climate Protection Foundation we are making an important contribution to Baden-Württemberg," says Christoph Dahl, Managing Director of the Baden-Württemberg Foundation. "The state is thus taking on a pioneering role, as no other federal state can boast a comparable foundation."
Strategic partnership with myclimate Germany The Carbon Offset Foundation will establish carbon offset projects with its own team, into which the offsets can flow. In addition, the foundation will develop its own educational and research projects. The strategic partner will be myclimate Germany, one of the leading providers of CO2 offsetting and carbon offset consulting based in Reutlingen. myclimate Germany supports the Carbon Offset Foundation Baden-Württemberg primarily through strategic consulting, the calculation of CO2 emissions, and the implementation of CO2 offsetting. myclimate provides CO2 certificates from carbon offset projects that are certified according to the strictest quality standards and supports the Carbon Offset Foundation in the development and implementation of its own carbon offset projects, both regionally and internationally.
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Since February 2017, the houses of Chiemgauer Holzhaus have been awarded the RAL quality mark GZ 425. The solid wood houses achieve a GWP (Global Warming Potential) value of less than zero in their carbon footprint. This was tested by the "Gütegemeinschaft CO2 neutrale Bauwerke in Holz e.V.".
