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description Publicationkeyboard_double_arrow_right Article 2013Publisher:Berlin: Deutsches Institut für Wirtschaftsforschung (DIW) Authors: Wolf-Peter Schill;Die Umsetzung der Energiewende erfordert einen weiteren Ausbau von Windkraft und Photovoltaik in Deutschland. Die Stromerzeugungsmöglichkeiten beider Technologien schwanken stark je nach Wetterlage, Tages- und Jahreszeit. So kann es dazu kommen, dass temporär mehr Strom produziert wird, als zu diesem Zeitpunkt verbraucht werden kann. Das DIW Berlin hat anhand ausgewählter Zukunftsszenarien untersucht, wie groß diese Überschüsse sein werden, und wie mit ihnen umgegangen werden sollte. Die Simulationen zeigen, dass eine Flexibilisierung des Stromsystems die Entstehung von Überschüssen deutlich verringert. Derzeit bleiben viele Kraftwerke aus technischen, ökonomischen und systembedingten Gründen auch in Schwachlastphasen am Netz. Durch die Abschaffung dieses Must-Run-Sockels und eine flexible Biomasseverstromung könnte der Stromüberschuss aus Wind- und Solarenergie im Jahr 2032 von über 18 Prozent auf unter zwei Prozent der möglichen Jahreserzeugung gesenkt werden. Die Flexibilisierung des Kraftwerksbetriebs sollte daher ein wichtiges Ziel der deutschen Energiepolitik sein. Darüber hinaus ließe sich das System durch den Export von Stromüberschüssen und andere Maßnahmen weiter flexibilisieren. Eine Aufnahme der gesamten verbleibenden Überschüsse durch zusätzliche Speicher ist jedoch ökonomisch nicht sinnvoll. Stattdessen können die größten Erzeugungsspitzen abgeregelt werden. Die Mengen wären in einem flexiblen System relativ gering: Im Jahr 2032 müssten nicht einmal zwei Prozent der potenziellen Stromerzeugung aus Wind- und Solarenergie verworfen werden. Mittel- und langfristig werden verschiedene Energiespeicher nicht nur zur Aufnahme von Überschüssen, sondern auch zur Spitzenlastdeckung, zur Flexibilisierung der thermischen Stromerzeugung und zur Bereitstellung von Systemdienstleistungen benötigt. Dazu gehören nicht nur Stromspeicher, sondern auch Wärme- und Gasspeicher. Aus energiepolitischer Sicht ist daher die weitere Förderung von Forschung und Entwicklung in diesen Bereichen geboten. The implementation of the energy transition in Germany requires the further expansion of wind and solar power. With both of these technologies, electricity generation is subject to strong seasonal and weather-related variations. In consequence, temporary situations may arise where more power is generated than can be consumed at that point in time. In the present study, DIW Berlin uses selected future scenarios to estimate the potential scale of these surpluses and to examine how they should be tackled. The aforementioned simulations indicate that increasing the flexibility of the energy system can drastically reduce the occurrence of surpluses. Currently, many power plants remain producing even in situations of low demand due to technical, economic and systemic reasons. If this must run requirement of conventional power plants is abandoned, and if power generated by biomass is tailored to demand, it would be possible to reduce the forecast power surplus from wind and solar energy for 2032 from over 18 percent to less than two percent of their potential annual production. The more flexible operation of Germany's fleet of power stations should, therefore, be an important aim for the country's energy policy. Exporting power surpluses or using them in heating or demand-side measures will further increase system flexibility. Power storage devices can absorb some of the remaining surplus. Storage of all surplus power might not be economically viable. If storage capacity is merely constructed to capture such surplus, then it would be more cost efficient to curtail some of the peak renewable energy production. The size of the surplus that would need to be curtailed is in fact relatively small: based on a flexible system, in 2032, only less than two percent of potential power generated by wind and solar energy would need to be discarded. In the medium and long term, various forms of energy storage will be required, not only to absorb surpluses, but also to cover peak load periods, to improve the flexibility of thermal electricity production, and to supply frequency control and other ancillary services. Apart from electricity storage devices, these can also comprise thermal energy and gas storage systems. From an energy policy perspective, therefore, it is advisable to continue support for research and development in these areas.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2008 GermanyAuthors: Dötsch, C.;"Egal ob Pump- oder Druckspeicher, Batterien oder "virtuelle" Pufferung im Netz - alle Technologien zur Stromspeicherung besitzen ihre spezifischen Vor- und Nachteile. Angesichts wachsender Marktanteile regenerativer Stromerzeugung nimmt die Bedeutung effizienter Techniken zur Energiespeicherung zu. Nur so werden "fluktuierende" Quellen wie Windkraft und Photovoltaik planbar."
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1998add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2006Embargo end date: 25 Oct 2006 ItalyPublisher:Universität Stuttgart Authors: Remme, Uwe;doi: 10.18419/opus-1703
Vor dem Hintergrund eines zunehmenden globalen Energiebedarfs und der Gefahr einer anthropogenen Störung des Klimasystems durch die Emission von Treibhausgasen gilt es, tragfähige Strategien und Perspektiven für eine nachhaltige Energieversorgung zu entwickeln. Der verstärkten Nutzung erneuerbarer Energien wird dabei vielfach eine Schlüsselrolle zur Bewältigung dieser Herausforderungen zugesprochen. Einer weit verbreiteten Ausschöpfung der auch in Deutschland in großem Maße verfügbaren Potenzialen an regenerativen Energieträgern stehen jedoch häufig noch die damit verbundenen hohen Kosten im Vergleich zu fossilen Energieträgern entgegen. Ziel der vorliegenden Arbeit ist es daher zu untersuchen, welchen Beitrag erneuerbare Energieträger in einem wettbewerblichen Marktumfeld langfristig zur Energieversorgung leisten können und in welchem Umfang erneuerbare Energieträger durch die Internalisierung der Treibhausgasvermeidungskosten in den Energiepreisen profitieren können. Zur Bewertung der Rolle erneuerbarer Energieträger sind mit Blick auf das Gesamtenergiesystem Interdependenzen zwischen der Nutzung erneuerbarer Energieträger und den übrigen Sektoren des Energiesystems zu berücksichtigen. Neben der Vernetzung des Energiesystems in horizontaler Richtung durch Prozessketten über Sektoren hinweg und in vertikaler Richtung durch die Konkurrenz regenerativer mit fossilen Energietechnologien sind dabei auch Kopplungen über Energiepreise, deren Höhe über die Wettbewerbsfähigkeit einer regenerativen Energietechnologie entscheidet, sowie die energie- und preisseitigen Effekte durch Einführung energiepolitischer Instrumente zu beachten. Aufgrund dieser Systemzusammenhänge wird daher ein auf dem Ansatz der linearen Programmierung basierendes intertemporales Energiesystemmodell verwendet, in dem die Energiewirtschaft Deutschlands von der Primär- bis zur Nutzenergie technologisch detailliert abgebildet und hinsichtlich der Systemkosten optimiert wird. Um die Wechselwirkungen innerhalb des Energiesystems aufzuzeigen, werden sich z. T. ergänzende methodische Verfahren entwickelt und eingesetzt. Neben einem Bilanzierungsmodell zur Ermittlung von die Prozessvorketten berücksichtigender Indikatoren zählen hierzu ein auf der Dualitätstheorie beruhendes Verfahren zur Dekomposition der Energie- und Zertifikatspreise, Methoden der Sensitivitätsanalyse zur Ermittlung der fundamentalen preisbestimmenden Faktoren und Techniken der parametrischen Programmierung, um neben Variationen der Modelleingangsdaten Treibhausgasvermeidungskostenkurven und Angebotskurven regenerativ erzeugten Stroms unter Berücksichtigung der systemaren Zusammenhänge im Energiesektor abzuleiten. Mit Hilfe des entwickelten Energiesystemmodells und der Analysemethoden werden die zukünftigen Entwicklungsperspektiven erneuerbarer Energien im deutschen Energiesystem bis zum Jahr 2050 szenariogestützt untersucht. In den Szenarien werden einerseits die mit einer Quote erneuerbarer Energien in der Stromerzeugung verbundenen energie-, kosten- und emissionsseitigen Auswirkungen betrachtet und andererseits der Beitrag erneuerbarer Energien in Konkurrenz mit alternativen Minderungsoptionen zur Erreichung von Treibhausgasminderungszielen dargestellt. Weiterhin werden in simultanen Variationen die Wechselwirkungen zwischen beiden Instrumenten und ihre Auswirkungen speziell auf die Stromerzeugungsstruktur und die Strompreise beleuchtet. Against the background of an increasing global energy demand and the danger of an anthropogenic disturbance of the climate system by the emission of greenhouse gases, it is necessary to develop sustainable strategies and perspectives for the future energy system. The increased usage of renewable sources is identified from many sides as a key element in strategies to overcome these challenges. However, a widely utilisation of the also in Germany large existing potentials of renewable energy carriers is currently still opposed by the associated high costs relative to fossil energy sources. The intention of the submitted thesis is to analyse the contribution of renewable energy sources in the long-run under competitive market conditions to the energy supply and to study the extent to which renewable energy sources can benefit from the internalisation of greenhouse gas abatement costs in the energy prices. To assess the role of renewable energy sources in the context of the entire energy system, interdependencies between the utilisation of renewable energy sources with other aspects and sectors of the energy system have to be taken into account. In addition to the interconnectedness of the energy system in the horizontal direction by process chains across sectors and in the vertical direction by the competition of renewable with conventional fossil technologies also the linkage by energy prices, which serve as benchmark for the competitiveness of a renewable energy technology, and the energy and price related effects caused by the introduction of policy instruments have to be considered. Due to these interactions within the system, a linear programming based dynamic energy system model is used, which depicts technologically detailed the German energy sector from the primary energy supply to the end-use energy demand side and optimises the energy system with respect to its total costs. In order to reveal the interactions and dependencies within the energy system, several partially complementary methodologies have been developed and applied to the model. Apart from a balance model that allows the calculation of specific indicators under consideration of previous process chains, the methodology comprises a method for decomposing energy and certificate prices based on the duality theory, the method of sensitivity analysis to identify the fundamental price-determining activities and parametric programming techniques to derive greenhouse gas abatement cost curves and renewable electricity supply cost curves. With the help of the developed energy system model and analysis tools, the future development perspectives of renewable energy in the German energy system until the year 2050 are studied in various scenarios. In these scenarios, on the one side the energy-, cost- and emission related effects associated with a quota for the electricity production from renewable sources are studied, on the other side the contribution of renewable energy sources to given greenhouse gas abatement targets in competition with alternative abatement measures is examined. Furthermore the interdependencies between these two policy instruments on each other and their effects on the structure of the electricity sector and on the electricity prices are highlighted.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2006Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2006Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1980add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type 2024Embargo end date: 28 Mar 2025Publisher:University of Bern Authors: Höchli, Bettina;doi: 10.48620/86777
Sind die Ersatzprodukte für Fleisch und Milch gesünder und ökologischer? Hierzulande sind fast 380 pflanzliche Alternativen zu tierischen Produkten erhältlich. Ein umfassender Bericht zeigt nun, welche Vorteile sie haben und wo die Nachteile liegen. Anke Fossgreen führte ein Interview mit Bettina Höchli anlässlich der Pressekonferenz zur Studienpräsentation "Fleisch- und Milchersatzprodukte – besser für Gesundheit und Umwelt?"
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Research 2017Publisher:Halle (Saale): Martin-Luther-Universität Halle-Wittenberg, Lehrstuhl für Wirtschaftsethik Authors: Blum, Ulrich; Pies, Ingo;Die Politik in Deutschland sollte sich nicht mit Forderungen zum Ausstieg aus der ver-meintlich "schmutzigen" Braunkohle begnügen, sondern ernsthaft daran arbeiten, den Einstieg in eine "saubere" Braunkohlewirtschaft zu organisieren, um als Pionier auch anderen Ländern einen Weg zu weisen, wie fossile Rohstoffe klimafreundlich genutzt werden können. German politics should not be content with exiting "dirty" brown coal. Instead, it should seriously work on entering a "clean" brown coal economy. As a pioneer, Germany could guide other countries into the right way of using fossil fuels in a climate friendly way.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesisPublisher:Freie Universität Berlin Universitätsbibliothek, Garystr. 39, 14195 Berlin Authors: Lobo, Kai Roger;Until the 1990s, electricity policy in Germany showed a high legal and economic continuity. The German Energy Act as the regulatory framework of the electricity industry basicly didn´t change for more than 60 years after its passing in 1935. Due to the liberalization specifications of the European Commission to create a European internal market for energy, the traditional German energy supply system was fractionalized. The liberalization question resulted in the phalanx of the German electricity industry splitting into two groups: supporters and opponents. While the big interconnected firms saw their upcoming national and international expansion chances, especially the municipal companies, in particular, feared that competition could threat their existence. Until that time, the monopoly system was characterized by high electricity prices, big excessive production capacities and a fixation on large fossil and nuclear power plants. Additionally, the electricity industry protagonists showed a high resistance to modernization and innovation. The liberalization of the energy supply on all value added stages through the abolition of the old demarcation zones immediately created a completely new competition situation on the German electricity market. Conflictual constellations between the protagonists arose in a policy field, in which the company and association structures had not changed for decades prior. During that long period, strong cooperation relationships have been built between the electricity industry, the regulating authorities and the political decision-makers. On the interconnected companies level the liberalization led to a unprecedented market concentration. Their number decreased from nine to four. As a result of the liberalization and the changes of the market structure the association landscape finally erode as well. In parallel to that development, the red-green government coalition gained power in 1998, which pushed the electricity policy towards the overall objective of environmental compatibility of the electricity supply. Therefore, the year 1998 is the starting year for this doctoral dissertation as a strategic policy field analysis, which focuses on the protagonists of the electricity policy and their action motivations. The investigation period ends with the Bundestag election in 2009, so it includes three legislative periods in relation to the national level. Simultaneously, the increasing Europeanization of the policy field ensured the shift of decision-making power and growing conflicts between the national and the European policy level. During that time, the lines of conflict, policy processes and protagonist constellations mainly proceeded along the dominating trends of liberalization and the environmental compatibility of the electricity supply system and the resulting conflict of aims. However, the political and absolutely dominating trend during the investigation period has been the rising influence of the European policy level on the national policy field developments. Thereby, the European Commission has been the strategic centre of the Europeanization of the policy field, while the European parliament also continuously extended its influence.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1979add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type 2015Publisher:TU Wien Authors: Pipal, Elisabeth;Ziel der Diplomarbeit ist es, sich kritisch mit dem Thema Sanierung im Bestand und der Revitalisierung der Plattenbausiedlungen in den neuen Europ��ischen L��ndern, auseinanderzusetzen. Dies ist wichtig, weil das Sanierungsproblem nicht nur im Mittelosteurop��ischen Raum (MOE) gegenw��rtig ist, sondern auch in vielen westeurop��ischen Industriel��ndern ein zentrales Thema geworden ist. Im Zuge der Ausarbeitung wird in Bezug auf Deutschland ein geschichtlicher R��ckblick gemacht warum diese Siedlungen entstanden, wie viele Plattenbauten im MOE Raum zu finden sind und welche Geb��udetypologien in Deutschland am meisten zur Anwendung kamen. Diese Arbeit gibt einen ��berblick ��ber den Stand der Wissenschaft, welche Sanierungskonzepte bereits existieren, inwieweit sie praktisch umgesetzt sind und welche Verbesserungsm��glichkeiten bestehen. Untersucht wird, ob es neue innovativere L��sungsans��tze f��r die Sanierung im Bestand gibt und wie diese bereits umgesetzt sind oder aussehen k��nnten. Untersucht wird hierzu ein g��ngiger Geb��udetypus aus Deutschland - jener, der am h��ufigsten zur Anwendung kam. Es handelt sich hier um ein reines Gedankenexperiment wie man mit innovativen Systemen schaffen k��nnte, den Energieverbrauch wesentlich zu reduzieren. Bedenkt man die Gesamtfl��che der noch zu sanierenden Geb��ude, findet man auch aus marktpolitischer Sicht ein enormes Entwicklungspotential, da die Erhaltung der Bausubstanz notwendig ist und ein Abriss unm��glich. Es soll mit dieser Diplomarbeit gezeigt werden, dass es sinnvoll ist sich auch an der Fakult��t f��r Architektur mit der Forschung zu besch��ftigen, um neue und sinnvolle Methoden zur Geb��udesanierung zu entwickeln. Es wird bereits an der TU Wien mit dem Modul Experimenteller Hochbau ein Schritt in diese Richtung erm��glicht, den es gilt weiter auszubauen! Aim of the thesis is to deal critically with the issue of renovation and revitalization of prefabricated housing estates in the new European countries. This is important because this issue is present not only in the Middle East European Space (MEO), but also has become a key issue in many Western European industrial countries. Initially a historical review is made referring to Germany why these settlements have been built, how many panel buildings can be found in the CEE region and the building typologies which are the most applied in Germany. This work gives an overview of the state of scientific knowledge, which remedial concepts already exist, how they are implemented in practice and what are the opportunities for improvement. It will be investigated whether there are new innovative solutions for the renovation of existing panel buildings and how these have already been implemented or how they could look like. A common type of building in Germany - the one which most often was used - is examined as an example. We are discussing a pure thought experiment how one might manage to reduce the energy consumption significantly with the help of innovative systems. Considering the total area of the yet to be rehabilitated buildings this is quite a market perspective and an enormous development potential, the preservation of the panel buildings is the better alternative to demolition. It will be shown in this thesis that it is useful even at the Faculty of Architecture to do some research for finding new and useful methods to develop building renovation. The combination of the classic art of construction with experimental science, is able to create new technologies, appliances and additives which is already done in the module Experimental construction at the Vienna University of Technology.
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description Publicationkeyboard_double_arrow_right Article 2013Publisher:Berlin: Deutsches Institut für Wirtschaftsforschung (DIW) Authors: Wolf-Peter Schill;Die Umsetzung der Energiewende erfordert einen weiteren Ausbau von Windkraft und Photovoltaik in Deutschland. Die Stromerzeugungsmöglichkeiten beider Technologien schwanken stark je nach Wetterlage, Tages- und Jahreszeit. So kann es dazu kommen, dass temporär mehr Strom produziert wird, als zu diesem Zeitpunkt verbraucht werden kann. Das DIW Berlin hat anhand ausgewählter Zukunftsszenarien untersucht, wie groß diese Überschüsse sein werden, und wie mit ihnen umgegangen werden sollte. Die Simulationen zeigen, dass eine Flexibilisierung des Stromsystems die Entstehung von Überschüssen deutlich verringert. Derzeit bleiben viele Kraftwerke aus technischen, ökonomischen und systembedingten Gründen auch in Schwachlastphasen am Netz. Durch die Abschaffung dieses Must-Run-Sockels und eine flexible Biomasseverstromung könnte der Stromüberschuss aus Wind- und Solarenergie im Jahr 2032 von über 18 Prozent auf unter zwei Prozent der möglichen Jahreserzeugung gesenkt werden. Die Flexibilisierung des Kraftwerksbetriebs sollte daher ein wichtiges Ziel der deutschen Energiepolitik sein. Darüber hinaus ließe sich das System durch den Export von Stromüberschüssen und andere Maßnahmen weiter flexibilisieren. Eine Aufnahme der gesamten verbleibenden Überschüsse durch zusätzliche Speicher ist jedoch ökonomisch nicht sinnvoll. Stattdessen können die größten Erzeugungsspitzen abgeregelt werden. Die Mengen wären in einem flexiblen System relativ gering: Im Jahr 2032 müssten nicht einmal zwei Prozent der potenziellen Stromerzeugung aus Wind- und Solarenergie verworfen werden. Mittel- und langfristig werden verschiedene Energiespeicher nicht nur zur Aufnahme von Überschüssen, sondern auch zur Spitzenlastdeckung, zur Flexibilisierung der thermischen Stromerzeugung und zur Bereitstellung von Systemdienstleistungen benötigt. Dazu gehören nicht nur Stromspeicher, sondern auch Wärme- und Gasspeicher. Aus energiepolitischer Sicht ist daher die weitere Förderung von Forschung und Entwicklung in diesen Bereichen geboten. The implementation of the energy transition in Germany requires the further expansion of wind and solar power. With both of these technologies, electricity generation is subject to strong seasonal and weather-related variations. In consequence, temporary situations may arise where more power is generated than can be consumed at that point in time. In the present study, DIW Berlin uses selected future scenarios to estimate the potential scale of these surpluses and to examine how they should be tackled. The aforementioned simulations indicate that increasing the flexibility of the energy system can drastically reduce the occurrence of surpluses. Currently, many power plants remain producing even in situations of low demand due to technical, economic and systemic reasons. If this must run requirement of conventional power plants is abandoned, and if power generated by biomass is tailored to demand, it would be possible to reduce the forecast power surplus from wind and solar energy for 2032 from over 18 percent to less than two percent of their potential annual production. The more flexible operation of Germany's fleet of power stations should, therefore, be an important aim for the country's energy policy. Exporting power surpluses or using them in heating or demand-side measures will further increase system flexibility. Power storage devices can absorb some of the remaining surplus. Storage of all surplus power might not be economically viable. If storage capacity is merely constructed to capture such surplus, then it would be more cost efficient to curtail some of the peak renewable energy production. The size of the surplus that would need to be curtailed is in fact relatively small: based on a flexible system, in 2032, only less than two percent of potential power generated by wind and solar energy would need to be discarded. In the medium and long term, various forms of energy storage will be required, not only to absorb surpluses, but also to cover peak load periods, to improve the flexibility of thermal electricity production, and to supply frequency control and other ancillary services. Apart from electricity storage devices, these can also comprise thermal energy and gas storage systems. From an energy policy perspective, therefore, it is advisable to continue support for research and development in these areas.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2008 GermanyAuthors: Dötsch, C.;"Egal ob Pump- oder Druckspeicher, Batterien oder "virtuelle" Pufferung im Netz - alle Technologien zur Stromspeicherung besitzen ihre spezifischen Vor- und Nachteile. Angesichts wachsender Marktanteile regenerativer Stromerzeugung nimmt die Bedeutung effizienter Techniken zur Energiespeicherung zu. Nur so werden "fluktuierende" Quellen wie Windkraft und Photovoltaik planbar."
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1998add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2006Embargo end date: 25 Oct 2006 ItalyPublisher:Universität Stuttgart Authors: Remme, Uwe;doi: 10.18419/opus-1703
Vor dem Hintergrund eines zunehmenden globalen Energiebedarfs und der Gefahr einer anthropogenen Störung des Klimasystems durch die Emission von Treibhausgasen gilt es, tragfähige Strategien und Perspektiven für eine nachhaltige Energieversorgung zu entwickeln. Der verstärkten Nutzung erneuerbarer Energien wird dabei vielfach eine Schlüsselrolle zur Bewältigung dieser Herausforderungen zugesprochen. Einer weit verbreiteten Ausschöpfung der auch in Deutschland in großem Maße verfügbaren Potenzialen an regenerativen Energieträgern stehen jedoch häufig noch die damit verbundenen hohen Kosten im Vergleich zu fossilen Energieträgern entgegen. Ziel der vorliegenden Arbeit ist es daher zu untersuchen, welchen Beitrag erneuerbare Energieträger in einem wettbewerblichen Marktumfeld langfristig zur Energieversorgung leisten können und in welchem Umfang erneuerbare Energieträger durch die Internalisierung der Treibhausgasvermeidungskosten in den Energiepreisen profitieren können. Zur Bewertung der Rolle erneuerbarer Energieträger sind mit Blick auf das Gesamtenergiesystem Interdependenzen zwischen der Nutzung erneuerbarer Energieträger und den übrigen Sektoren des Energiesystems zu berücksichtigen. Neben der Vernetzung des Energiesystems in horizontaler Richtung durch Prozessketten über Sektoren hinweg und in vertikaler Richtung durch die Konkurrenz regenerativer mit fossilen Energietechnologien sind dabei auch Kopplungen über Energiepreise, deren Höhe über die Wettbewerbsfähigkeit einer regenerativen Energietechnologie entscheidet, sowie die energie- und preisseitigen Effekte durch Einführung energiepolitischer Instrumente zu beachten. Aufgrund dieser Systemzusammenhänge wird daher ein auf dem Ansatz der linearen Programmierung basierendes intertemporales Energiesystemmodell verwendet, in dem die Energiewirtschaft Deutschlands von der Primär- bis zur Nutzenergie technologisch detailliert abgebildet und hinsichtlich der Systemkosten optimiert wird. Um die Wechselwirkungen innerhalb des Energiesystems aufzuzeigen, werden sich z. T. ergänzende methodische Verfahren entwickelt und eingesetzt. Neben einem Bilanzierungsmodell zur Ermittlung von die Prozessvorketten berücksichtigender Indikatoren zählen hierzu ein auf der Dualitätstheorie beruhendes Verfahren zur Dekomposition der Energie- und Zertifikatspreise, Methoden der Sensitivitätsanalyse zur Ermittlung der fundamentalen preisbestimmenden Faktoren und Techniken der parametrischen Programmierung, um neben Variationen der Modelleingangsdaten Treibhausgasvermeidungskostenkurven und Angebotskurven regenerativ erzeugten Stroms unter Berücksichtigung der systemaren Zusammenhänge im Energiesektor abzuleiten. Mit Hilfe des entwickelten Energiesystemmodells und der Analysemethoden werden die zukünftigen Entwicklungsperspektiven erneuerbarer Energien im deutschen Energiesystem bis zum Jahr 2050 szenariogestützt untersucht. In den Szenarien werden einerseits die mit einer Quote erneuerbarer Energien in der Stromerzeugung verbundenen energie-, kosten- und emissionsseitigen Auswirkungen betrachtet und andererseits der Beitrag erneuerbarer Energien in Konkurrenz mit alternativen Minderungsoptionen zur Erreichung von Treibhausgasminderungszielen dargestellt. Weiterhin werden in simultanen Variationen die Wechselwirkungen zwischen beiden Instrumenten und ihre Auswirkungen speziell auf die Stromerzeugungsstruktur und die Strompreise beleuchtet. Against the background of an increasing global energy demand and the danger of an anthropogenic disturbance of the climate system by the emission of greenhouse gases, it is necessary to develop sustainable strategies and perspectives for the future energy system. The increased usage of renewable sources is identified from many sides as a key element in strategies to overcome these challenges. However, a widely utilisation of the also in Germany large existing potentials of renewable energy carriers is currently still opposed by the associated high costs relative to fossil energy sources. The intention of the submitted thesis is to analyse the contribution of renewable energy sources in the long-run under competitive market conditions to the energy supply and to study the extent to which renewable energy sources can benefit from the internalisation of greenhouse gas abatement costs in the energy prices. To assess the role of renewable energy sources in the context of the entire energy system, interdependencies between the utilisation of renewable energy sources with other aspects and sectors of the energy system have to be taken into account. In addition to the interconnectedness of the energy system in the horizontal direction by process chains across sectors and in the vertical direction by the competition of renewable with conventional fossil technologies also the linkage by energy prices, which serve as benchmark for the competitiveness of a renewable energy technology, and the energy and price related effects caused by the introduction of policy instruments have to be considered. Due to these interactions within the system, a linear programming based dynamic energy system model is used, which depicts technologically detailed the German energy sector from the primary energy supply to the end-use energy demand side and optimises the energy system with respect to its total costs. In order to reveal the interactions and dependencies within the energy system, several partially complementary methodologies have been developed and applied to the model. Apart from a balance model that allows the calculation of specific indicators under consideration of previous process chains, the methodology comprises a method for decomposing energy and certificate prices based on the duality theory, the method of sensitivity analysis to identify the fundamental price-determining activities and parametric programming techniques to derive greenhouse gas abatement cost curves and renewable electricity supply cost curves. With the help of the developed energy system model and analysis tools, the future development perspectives of renewable energy in the German energy system until the year 2050 are studied in various scenarios. In these scenarios, on the one side the energy-, cost- and emission related effects associated with a quota for the electricity production from renewable sources are studied, on the other side the contribution of renewable energy sources to given greenhouse gas abatement targets in competition with alternative abatement measures is examined. Furthermore the interdependencies between these two policy instruments on each other and their effects on the structure of the electricity sector and on the electricity prices are highlighted.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2006Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2006Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1980add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type 2024Embargo end date: 28 Mar 2025Publisher:University of Bern Authors: Höchli, Bettina;doi: 10.48620/86777
Sind die Ersatzprodukte für Fleisch und Milch gesünder und ökologischer? Hierzulande sind fast 380 pflanzliche Alternativen zu tierischen Produkten erhältlich. Ein umfassender Bericht zeigt nun, welche Vorteile sie haben und wo die Nachteile liegen. Anke Fossgreen führte ein Interview mit Bettina Höchli anlässlich der Pressekonferenz zur Studienpräsentation "Fleisch- und Milchersatzprodukte – besser für Gesundheit und Umwelt?"
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Research 2017Publisher:Halle (Saale): Martin-Luther-Universität Halle-Wittenberg, Lehrstuhl für Wirtschaftsethik Authors: Blum, Ulrich; Pies, Ingo;Die Politik in Deutschland sollte sich nicht mit Forderungen zum Ausstieg aus der ver-meintlich "schmutzigen" Braunkohle begnügen, sondern ernsthaft daran arbeiten, den Einstieg in eine "saubere" Braunkohlewirtschaft zu organisieren, um als Pionier auch anderen Ländern einen Weg zu weisen, wie fossile Rohstoffe klimafreundlich genutzt werden können. German politics should not be content with exiting "dirty" brown coal. Instead, it should seriously work on entering a "clean" brown coal economy. As a pioneer, Germany could guide other countries into the right way of using fossil fuels in a climate friendly way.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesisPublisher:Freie Universität Berlin Universitätsbibliothek, Garystr. 39, 14195 Berlin Authors: Lobo, Kai Roger;Until the 1990s, electricity policy in Germany showed a high legal and economic continuity. The German Energy Act as the regulatory framework of the electricity industry basicly didn´t change for more than 60 years after its passing in 1935. Due to the liberalization specifications of the European Commission to create a European internal market for energy, the traditional German energy supply system was fractionalized. The liberalization question resulted in the phalanx of the German electricity industry splitting into two groups: supporters and opponents. While the big interconnected firms saw their upcoming national and international expansion chances, especially the municipal companies, in particular, feared that competition could threat their existence. Until that time, the monopoly system was characterized by high electricity prices, big excessive production capacities and a fixation on large fossil and nuclear power plants. Additionally, the electricity industry protagonists showed a high resistance to modernization and innovation. The liberalization of the energy supply on all value added stages through the abolition of the old demarcation zones immediately created a completely new competition situation on the German electricity market. Conflictual constellations between the protagonists arose in a policy field, in which the company and association structures had not changed for decades prior. During that long period, strong cooperation relationships have been built between the electricity industry, the regulating authorities and the political decision-makers. On the interconnected companies level the liberalization led to a unprecedented market concentration. Their number decreased from nine to four. As a result of the liberalization and the changes of the market structure the association landscape finally erode as well. In parallel to that development, the red-green government coalition gained power in 1998, which pushed the electricity policy towards the overall objective of environmental compatibility of the electricity supply. Therefore, the year 1998 is the starting year for this doctoral dissertation as a strategic policy field analysis, which focuses on the protagonists of the electricity policy and their action motivations. The investigation period ends with the Bundestag election in 2009, so it includes three legislative periods in relation to the national level. Simultaneously, the increasing Europeanization of the policy field ensured the shift of decision-making power and growing conflicts between the national and the European policy level. During that time, the lines of conflict, policy processes and protagonist constellations mainly proceeded along the dominating trends of liberalization and the environmental compatibility of the electricity supply system and the resulting conflict of aims. However, the political and absolutely dominating trend during the investigation period has been the rising influence of the European policy level on the national policy field developments. Thereby, the European Commission has been the strategic centre of the Europeanization of the policy field, while the European parliament also continuously extended its influence.
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eumore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 1979add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=718658&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type 2015Publisher:TU Wien Authors: Pipal, Elisabeth;Ziel der Diplomarbeit ist es, sich kritisch mit dem Thema Sanierung im Bestand und der Revitalisierung der Plattenbausiedlungen in den neuen Europ��ischen L��ndern, auseinanderzusetzen. Dies ist wichtig, weil das Sanierungsproblem nicht nur im Mittelosteurop��ischen Raum (MOE) gegenw��rtig ist, sondern auch in vielen westeurop��ischen Industriel��ndern ein zentrales Thema geworden ist. Im Zuge der Ausarbeitung wird in Bezug auf Deutschland ein geschichtlicher R��ckblick gemacht warum diese Siedlungen entstanden, wie viele Plattenbauten im MOE Raum zu finden sind und welche Geb��udetypologien in Deutschland am meisten zur Anwendung kamen. Diese Arbeit gibt einen ��berblick ��ber den Stand der Wissenschaft, welche Sanierungskonzepte bereits existieren, inwieweit sie praktisch umgesetzt sind und welche Verbesserungsm��glichkeiten bestehen. Untersucht wird, ob es neue innovativere L��sungsans��tze f��r die Sanierung im Bestand gibt und wie diese bereits umgesetzt sind oder aussehen k��nnten. Untersucht wird hierzu ein g��ngiger Geb��udetypus aus Deutschland - jener, der am h��ufigsten zur Anwendung kam. Es handelt sich hier um ein reines Gedankenexperiment wie man mit innovativen Systemen schaffen k��nnte, den Energieverbrauch wesentlich zu reduzieren. Bedenkt man die Gesamtfl��che der noch zu sanierenden Geb��ude, findet man auch aus marktpolitischer Sicht ein enormes Entwicklungspotential, da die Erhaltung der Bausubstanz notwendig ist und ein Abriss unm��glich. Es soll mit dieser Diplomarbeit gezeigt werden, dass es sinnvoll ist sich auch an der Fakult��t f��r Architektur mit der Forschung zu besch��ftigen, um neue und sinnvolle Methoden zur Geb��udesanierung zu entwickeln. Es wird bereits an der TU Wien mit dem Modul Experimenteller Hochbau ein Schritt in diese Richtung erm��glicht, den es gilt weiter auszubauen! Aim of the thesis is to deal critically with the issue of renovation and revitalization of prefabricated housing estates in the new European countries. This is important because this issue is present not only in the Middle East European Space (MEO), but also has become a key issue in many Western European industrial countries. Initially a historical review is made referring to Germany why these settlements have been built, how many panel buildings can be found in the CEE region and the building typologies which are the most applied in Germany. This work gives an overview of the state of scientific knowledge, which remedial concepts already exist, how they are implemented in practice and what are the opportunities for improvement. It will be investigated whether there are new innovative solutions for the renovation of existing panel buildings and how these have already been implemented or how they could look like. A common type of building in Germany - the one which most often was used - is examined as an example. We are discussing a pure thought experiment how one might manage to reduce the energy consumption significantly with the help of innovative systems. Considering the total area of the yet to be rehabilitated buildings this is quite a market perspective and an enormous development potential, the preservation of the panel buildings is the better alternative to demolition. It will be shown in this thesis that it is useful even at the Faculty of Architecture to do some research for finding new and useful methods to develop building renovation. The combination of the classic art of construction with experimental science, is able to create new technologies, appliances and additives which is already done in the module Experimental construction at the Vienna University of Technology.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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