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Transdisziplinarität sucht mögliche Lösungen für komplexe gesellschaftliche Probleme. Dafür bricht sie disziplinäre Engsicht auf und bringt außerwissenschaftliche Perspektiven ein. Sie übt Wissenskultur in Forschung und Praxis, die in der Nachhaltigkeitswissenschaft einen Vorreiter gefunden hat: die environmental literacy, die uns vom Wissen zum Entscheiden leitet.
Die Geschehnisse in Fukushima und der anschließend von der Politik in Deutschland beschlossene endgültige Ausstieg aus der Atomkraft bewirken eine breite politische Hinwendung zur Energiewende. Das heißt, künftig erhalten erneuerbare Energien, Effizienzstrategien und dezentrale Erzeugungsalternativen einen deutlich größeren Stellenwert. Damit hat sich ein historisch einmaliges Zeitfenster für die Verwirklichung einer atomstromfreien und klimaschutzmotivierten Energieversorgung geöffnet. Und die Möglichkeiten der Stadtwerke, diesen Strukturwandel in der Energieversorgung maßgeblich mitzugestalten, sind vielfältig. Das war bereits im Jahr 2008 das Ergebnis einer dreijährigen Forschungspartnerschaft "Infrafutur" des Wuppertal Instituts.
Die Energiewende auf örtlicher Ebene materiell umzusetzen, ist für die kommunale Energiewirtschaft eine große Herausforderung. In einer offensiven Klimaschutzstrategie steckt für Stadtwerke aber auch eine riesige Chance. Für eine nachhaltige und umfassende Qualitätssicherung in der Energieversorgung ist die Dezentralität ein herausragendes Leitprinzip und der Ausbau dezentraler Energie-Infrastrukturen eine entscheidende Grundlage.
Im Juni 2011 hat der Wissenschaftliche Beirat Globale Umweltveränderungen (WBGU) sein neues Hauptgutachten zur "Großen Transformation" vorgelegt. Eine besondere Brisanz liegt in den wissenschaftspolitischen Empfehlungen. Was bedeuten diese Empfehlungen für die Wirtschafts- und Managementwissenschaften?
The representative survey studies provide a comprehensive database on the public awareness and perception of CCS in six selected European countries. Our results provide insights into the public understanding and knowledge of energy related issues and CCS topics. The embedded experimental research provides insights into how information affects CCS perceptions. The results discuss implications for CCS communication methods.
CCS is discussed in a broad sense throughout Europe. In this paper a cautious, conservative estimate of CO2 storage capacity for Germany and its neighbouring countries where CO2 emissions from Germany could possibly be stored (Netherlands, France, Denmark, Norway, UK and Poland) is presented. Such a lower limit calculation is necessary for orientation purposes for potential investors and political decision-makers.
Conservative CO2 sequestration capacity in deep saline aquifers for Germany is derived by the volumetric approach where parameters such as efficiency factor, CO2 density, porosity of the geological formation are of interest. It is assumed that every geological system is closed and thus an efficiency factor of 0.1 per cent (based on maximum pressure increase and total compressibility) for saline aquifers is applied. The capacity of German depleted oil and gas fields is based on cumulative recovery data and a sweep efficiency of 75 per cent. The storage capacity in the other considered countries, adjacent to Germany, are based on a critical review and adjustment of the results of the European reports JOULE II, GESTCO and GeoCapacity.
The conservative capacities for all countries together amount to 49 Gt CO2, from which Norway and the UK provide 36 Gt, all offshore in the North Sea. Compared to the emissions from large point sources in these countries during 40 years (47.6 Gt of CO2), a virtual balance is achieved. This can only be reached, if a large scale CO2 pipeline system is installed to connect these countries, especially Germany, to the large sinks in the North Sea. If additional restrictions like source-sink matching, acceptance issues and injection rates constraints are taken into account, the available storage space gets increasingly scarce.
Carbon capture and storage (CCS) might be an important climate protection technology for coal-rich countries. This paper presents first results of a systemic and long-term analysis of a future CCS implementation in India. It focuses on potential storage formations in the geological subsurface and the geographic match of these sinks with CO2 emissions of current and future largepoint power plants. The analysis is framed by an overview on India’s position on CCS, ongoing Indian research and development projects as well as its international activities.
The geological potential for CO2 sequestration in India is subject to large uncertainty because, so far, only few studies estimated it in a vague manner. A first meta-analysis shows that there is a huge variation between 48 Gt and 572 Gt of CO2. The main differences between the evaluated studies are the assumed capacities for deep saline aquifers and basalt formations. Taking the ongoing discussion and the existing uncertainties into account, the storage potential might be provided only by aquifers (in the range of 44 to 360 Gt of CO2) and hydrocarbon fields (2 to 7 Gt of CO2).
The amount of CO2 emissions possibly available for sequestration is assessed by applying three substantially different long-term energy scenarios for India. These scenarios, indicating pathways between a "low carbon" and a "high carbon" development until 2050, result in cumulated CO2 emissions between 30 and 171 Gt if all new large-scaled power plants will be based on CCS from 2020 on. Compared with the sink capacities, only the CO2 emissions of scenario S2 (30 Gt) could theoretically be stored with high certainty. Considering the scenarios S3 and S1, their CO2 emissions (94 Gt and 171 Gt, respectively) could only be sequestered if the aquifer capacity would prove to be usable. Geological storage sites do not appear to be located close to sources in South West, Central, North and North East India. This first rough analysis means that only those CO2 emissions occurring in the Western parts of North and West India, the Eastern part of South India as well as the South part of East India might be suited for sequestration nearby.
A more detailed source-sink matching will follow in the next phase of the project, including results of expert meetings in India. Furthermore, this analysis will be complemented by an additional assessment from economic, ecological and resource-strategic points of view, which might further affect the potential for CCS.