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An important share of developed countries’ energy consumption is used for heating. In the past decades, increasing living space has been one of the main drivers for energy demand in the housing sector. Based on a social innovation framework and drawing on two case studies from Germany and Switzerland, this paper explores options to reduce living space in the residential sector. Both cases focus on senior owners of single family houses (SFH), an important target group, as they remain in large family dwellings after their children have moved out. In the paper, we present the results of empirical work conducted in both projects, exploring how living in large dwellings is perceived by SFH-owners and which alternative options seem feasible and promising. These insights are linked to an intervention perspective, drawing on targeted workshops for homeowners in Switzerland. The findings show that options such as densification, letting out or moving to a smaller apartment, can be appealing to senior SFH-owners, if they are linked to attractive and positive visions about living in old age. Drawing on these empirical insights, we discuss how senior SFH-owners can be made aware of the advantages of managing with less space, and how they can be motivated and enabled to do so. Based on the social innovation approach and the findings from the surveys, we add suggestions on a broader supportive policy framework.
reducing living space 31.10.2019 Publikationen Produkte & Stoffströme Bücher

Proceedings of the INMM & ESARDA Joint Virtual Annual Meeting August 23-26  &  August 30-September 1, 2021. Extracting transuranic elements from nuclear waste (partitioning – P) to burn them in dedicated nuclear reactors (transmutation – T) essentially holds the promise of reducing the one-millionyear risk of highly radioactive nuclear waste disposal. That would solve one of the main conundrums of nuclear energy production. Here, we argue that P&T will not significantly change the safety requirements and risks of geologic disposal for spent fuel and high-level nuclear waste. We will assess the maturity of P&T technologies such as reactors, separation technologies and fuel fabrication plants. A sensitivity analysis will be presented on the time scale and effects of a P&T treatment of nuclear waste fuel cycle choices like fast reactor, molten salt reactors or accelerator driven systems. This will include an estimate of the number of required fuel cycle facilities, and the composition of the final waste stream, depending on separation and transmutation efficiency, irradiation and cooling down times and the build-up of problematic fission products with very long half-lives. We compare homogeneous P&T strategies with improved proliferation resistance and heterogeneous P&T strategies with different actinides being treated separately in a more flexible fuel cycle design.
disposal 01.09.2021 Publikationen Nukleartechnik & Anlagensicherheit Bücher

The global loss of fertile soils is widely recognized as one of the most pressing environmental and social problems of the next decades. Against this backdrop, political action is urgently needed to promote the sustainable use and management of soil, both domestically and at the international level. While particularly international soil policy has been neglected for decades, land and soil degradation have started to gain some international political momentum in recent years. This paper analyses how the UN Convention on Biological Diversity (CBD) as a key multilateral environmental agreement (MEA) within international environmental law contributes to the international governance of sustainable soil use. Firstly, we give a brief overview of the international governance of soil sustainability to date, locating the role of the CBD in this context. Secondly, we elaborate on how the CBD deals with soil (biodiversity) issues—e.g., in its Strategic Plan and Aichi Targets, through principles for the sustainable use of biodiversity, the CBD’s Ecosystem Approach as well as the International Soil Biodiversity Initiative. In the discussion, we highlight the value and shortcomings of the soil topic under the CBD. We also develop options on how sustainable soil management could be strengthened within the CBD and through the CBD. We conclude that the CBD can indeed contribute to the political promotion of sustainable soil use but that presently there are few incentives for CBD parties to push the process forward. Also, to be effective, the CBD is dependent on meaningful progress in international politics on the broader topic of sustainable land use.
Soils: Status and Future Options 15.02.2017 Umweltrecht & Governance Bücher

This work determines the techno-economic potential of electrifying the truck fleet of the “Badische Staatsbrauerei Rothaus AG”, based on the analysis of data containing two weeks of vehicle operation. The analysis reveals that overnight depot charging maximises potential, while daytime charging allows for longer tours using vehicles with smaller batteries. Economically, electrification of this fleet is beneficial, paying off within a few years as higher operation costs of the diesel fleet offset the high purchase price of electric trucks. Financial advantages increase with consistent usage and longer vehicle service life, supported by lower depot electricity prices. Sensitivity analysis shows that fuel prices, vehicle costs, and residual values of electric trucks significantly influence results, while charging infrastructure costs have less influence on the outcome. This study emphasises the feasibility and profitability of the electrification of truck fleets, identifies the most important influencing factors
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Recent years have seen the development of numerous innovations in social, constructional, and transportation planning for different forms of communal housing. They illustrate how more sustainable practices in transport and land use can be achieved through the collective provision and use of space and mobility services. The question remains, however, of who needs to be involved in such bottom-up approaches and when in order to ensure their success. What changes are necessary to anchor these approaches in the wider context of urban and transport planning? This paper presents three examples of neighbourhood mobility concepts and the collaborative use of space and land. A research project accompanied the development of these concepts in a real-world laboratory design. The scientists used social-empirical methods and secondary analyses to evaluate social and ecological effects, economic viability and the process of joint development. The results show the high sustainability potential of such neighbourhood concepts: they enable residents to meet their mobility needs, while using fewer vehicles through shared use, reducing the number of journeys and changing their choice of transport. At the same time, promoting and developing community services has been shown to be inhibited by preconditions such as existing planning law. Opportunities and obstacles have been identified and translated into recommendations for action, focusing on municipal urban planning, transport planning, and the housing industry.
08.03.2021 Publikationen Mobilitätswende Ressourcen & Mobilität Bücher

Under the Paris Agreement, most countries have communicated Nationally Determined Contributions (NDCs) with mitigation targets for a single year. Single-year targets present considerable challenges when countries use international carbon markets to achieve their NDCs. This paper assesses the environmental integrity implications of the two options that countries with single-year targets can use to account for internationally transferred mitigation outcomes (ITMOs) under Article 6 of the Paris Agreement: averaging and multi-year approaches. To assess the implications of these options, the paper considers a variety of scenarios for how two countries might engage with Article 6 and assesses how the choice of the accounting approach may affect aggregated emissions from the two countries. The paper finds that aggregated emissions could increase, decrease or remain unaffected, depending on: which of the two accounting approaches is chosen by the transferring and the acquiring country; whether the generation or use of ITMOs decreases, increases, or keeps constant over time; whether the countries’ emissions in the target year are representative for the countries’ emissions trend; and what course of action countries take in the case of a possible over- or under-achievement of their NDC targets.
single-year targets 19.12.2021 Publikationen Energie & Klimaschutz Bücher

Die Fernwärme gewinnt bei der Dekarbonisierung der Wärmeversorgung von Gebäuden in ganz Europa an Bedeutung. Daher müssen Fernwärmenetze ausgebaut und gleichzeitig dekarbonisiert werden. Eine große Herausforderung für die Transformation von Fernwärmenetzen ist die saisonale Schwankung zwischen dem Angebot an erneuerbarer Wärme und überschüssiger unvermeidbarer Abwärme hauptsächlich im Sommer sowie dem hohen Wärmebedarf im Winter. Für den Ausgleich der saisonalen Schwankungen ist die saisonale Wärmespeicherung eine vielversprechende Option, die bislang in Deutschland noch wenig eingesetzt wird. Überschüssige Wärme, die im Sommer erzeugt wird, kann gespeichert und in der Heizperiode genutzt werden. Eine Möglichkeit zur saisonalen Speicherung bietet der Einsatz von Aquiferspeichern. In dem Beitrag analysieren wir den Bedarf an und die Potenziale von saisonaler Wärmespeicherung in Aquiferen in Fernwärmesystemen in den drei geothermischen Regionen Oberrheingraben, Süddeutsches Molassebecken und Norddeutsches Becke
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Nuclear cultural heritage (NCH) is a relatively new approach. It was introduced by Rindzevičiūtė (2019) and is being discussed internationally with reference to its contribution to knowledge preservation of nuclear objects and practices as well as safety aspects, especially in the context of nuclear waste governance. The latter includes knowledge transfer to future generations in the sense that knowledge of nuclear objects and practices might be further developed and could be applied as well in future. This is particularly relevant as nuclear technology is hazardous to the living environment and endures for very long periods of time. The great impacts on landscapes and the living environment are demonstrated by experiences with nuclear accidents, nuclear weapon tests, the storage and disposal of nuclear wastes, and uranium mining. One reason for the upcoming interest in NCH is the decommissioning of nuclear power plants and siting and construction of nuclear waste repositories. With this article, we aim to pr
Publikationen Energie & Klimaschutz Nukleartechnik & Anlagensicherheit Bücher

Sufficiency measures are potentially decisive for the decarbonisation of energy systems but rarely considered in energy policy and modelling. Just as efficiency and renewable energies, the diffusion of demand-side solutions to climate change also relies on policy-making. Our extensive literature review of European and national sufficiency policies fills a gap in existing databases. We present almost 300 policy instruments clustered into relevant categories and publish them as „Energy Sufficiency Policy Database“. This paper provides a description of the data clustering, the set-up of the database and an analysis of the policy instruments. A key insight is that sufficiency policy includes much more than bans of products or information tools leaving the responsibility to individuals. It is a comprehensive instrument mix of all policy types, not only enabling sufficiency action, but also reducing currently existing barriers. A policy database can serve as a good starting point for policy recommendations and modelling, further research is needed on barriers and demand-reduction potentials of sufficiency policy instruments.
sufficiency policies 04.07.2022 Publikationen Energie & Klimaschutz Bücher

The transport sector is not on track to meet the Paris Agreement climate targets. Rapid decarbonization of transport requires fuel switching and energy savings through modal shift and demand reduction – which are the aims of transport-sufficiency policy. We analyze passenger transport-policy instruments collected in the European Sufficiency Policy Database. Applying the concept of impact chains, we examine the ways in which proposed policy instruments function from cause/policy stimulus to effect/impact, with a focus on the factors relevant to the feasibility of policy implementation in Germany. This allows us to compare implementation feasibility by policy target and by instrument type. Based on our analysis of supporting factors, barriers, and risks, we find that policy instruments with many supporting factors also tend to have many barriers and risks. This is often the case with broad instruments that have diverse relevant factors. We observe that the policy targets “promotion of active modes” and “reducti
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