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Energy sufficiency is one of the three energy sustainability strategies, next to energy efficiency and renewable energies. We analyse to what extent European governments follow this strategy, by conducting a systematic document analysis of all available European National Energy and Climate Plans (NECPs) and Long-Term Strategies (LTSs). We collect and categorise a total of 230 sufficiency-related policy measures, finding large differences between countries. We find most sufficiency policies in the transport sector, when classifying also modal shift policies to change the service quality of transport as sufficiency policies. Types of sufficiency policy instruments vary considerably from sector to sector, for instance the focus on financial incentives and fiscal instruments in the mobility sector, information in the building sector, and financial incentive/tax instruments in cross-sectoral application. Regulatory instruments currently play a minor role for sufficiency policy in the national energy and climate plans of EU member states. Similar to energy efficiency in recent decades, sufficiency still largely referred to as micro-level individual behaviour change or necessary exogenous trends that will need to take place. It is not treated yet as a genuine field of policy action to provide the necessary framework for enabling societal change. Published in: Energy Policy, Volume 157, October 2021, 112483
and climate plans 01.10.2021 Publikationen Energie & Klimaschutz Bücher

We present results of two model based scenario analysis focussing on the future German power sector which is characterized by a rising share of renewable energies and an associated higher demand for flexibility. Case study 1 is based on a general comparison between a decentrally and a centrally orientated electricity system. The research question of case study 2 is whether flexibility should be centrally balanced by a national market-based dispatch or dispatched in a decentralized manner within regional balancing areas. The combined results of these two case studies offer the possibility to show the differences between a decentralized and a centralized electricity system regarding the dispatch of generation, storage and flexibility options as well as resulting effects on variable costs, CO2 emissions, grid usage and RE integration. Decentralization as control strategy leads to higher variable generation costs due to more expensive generation and less efficient flexibility options that come into the market, while the majority of demand and supply still needs a transmission grid for balancing. Koch M. et al. (2017) Dispatch of Flexibility Options, Grid Infrastructure and Integration of Renewable Energies Within a Decentralized Electricity System. In: Bertsch V., Fichtner W., Heuveline V., Leibfried T. (eds) Advances in Energy System Optimization. Trends in Mathematics. Birkhäuser, Cham. https://doi.org/10.1007/978-3-319-51795-7_5
Publikationen Energiewende und Klimapolitik Energie & Klimaschutz Bücher

This article compares the drivers and barriers of two sustainability transformations in Germany: the energy transformation (“Energiewende”) andt he attempted transformation towards organic agriculture which has, so far, been less successful. It is based on two case studies rooted in transformation research. While there is rapidly growing literature on energy, there are far fewer analyses of agricultural transformations. Moreover, single case studies dominate. The cross-case comparison presented in this article is a step towards filling this gap. Particularly in their initial stages, the two transformation processes shared similarities: both systems had been coming under pressure due to environmental crises, grassroots movements and niche developments of sustainable alternatives. However, changes to the regulatory system framework made investments in renewable energy more attractive than in organic agriculture, where the profitability of the transformation is still reduced by significant subsidies for conventional agriculture. Moreover, the energy transformation has benefitted from technological improvements and falling costs, an early coalition of supporters, including business actors, and more recently from abroader societal and political consensus. ©2019 D. A. Heyen, F.Wolff; licensee oekom verlag. This Open Access article is published under the terms of the Creative Commons Attribution License CCBY4.0 (http://creativecommons.org/licenses/by/4.0). https://doi.org/10.14512/gaia.28.S1.9 Submitted December 19, 2018; revised version accepted July 12, 2019.
of sustainability transformations 22.08.2019 Umweltrecht & Governance Bücher

Die Diskussion um die Nutzung von Wäldern im Spannungsfeld von Holzproduktion, ihrem Beitrag zum Klimaschutz und der Verpflichtung zum Schutz der Biodiversität von Waldökosystemen wird mit Schärfe geführt. Es werden dabei auch Klimaschutzargumente bemüht, um Anliegen des Biodiversitätsschutzes zu diskreditieren. Manche der angeführten Argumente basieren auf einer fragwürdigen Datenbasis und -interpretation. In der Gemengelage geht es nicht nur um den Umgang mit Forderungen zu mehr Flächenstilllegungen von Wirtschaftswäldern und den Schutz von Naturwäldern in Deutschland, es droht auch der Verlust der letzten großflächigen europäischen temperaten Urwälder, die alle im Karpatenbogen liegen. Ursächliche Faktoren sind die intensive und zunehmende Holznutzung, ein unzureichender politischer Wille und ein zu geringes nationales und europäisches Engagement für den Schutz dieses Weltnaturerbes. Urwälder und Naturwälder sind in den EU-Mitgliedsstaaten auf weniger als 3 % der Gesamtwaldfläche erhalten geblieben; hunderttausende Hektar europäischer Urwälder gingen allein in den vergangenen zehn Jahren verloren. In diesem zweiteiligen Aufsatz diskutieren wir Argumente zu den Themenkomplexen (1) Biodiversität und Forstwirtschaft, (2) CO2-Speicher- und -Senkenleistung genutzter und ungenutzter Wälder und (3) Klimaschutzwirkung der energetischen Holznutzung vor dem Hintergrund aktueller klimapolitischer Entscheidungen der EU und der Bundesregierung. Der vorliegende erste Teil befasst sich mit dem Vorkommen von Ur- und Naturwäldern in Europa und widerlegt die These, diese könnten keinen wichtigen Beitrag zum Biodiversitätsschutz leisten. Außerdem wird der Beitrag von Urwäldern, Naturwäldern und Wirtschaftswäldern mit dem Klimaschutz vergleichend bewertet. Teil 2: Das Narrativ von der Klimaneutralität der Ressource Holz finden Sie hier >> Click here for the English version >>
Klimaschutz – Teil 1: 31.12.2021 Publikationen Energie & Klimaschutz Bücher

Given the challenges of future land use policies addressing sustainable natural resources management and socioeconomic aspects, the inter- and transdisciplinary GLOBALANDS (Global Land Use and Sustainability) project identified relevant international policy options, their synergies and possible implementation, and initiated and supported respective processes. GLOBALANDS identified also “windows of opportunity” to strengthen sustainable land use through international policies based on an extensive screening of the most important international policies – both governmental and non-governmental approaches – with relevant impacts on land use. Key processes which could strengthen global governance towards sustainable land use are:The proposed UN Sustainable Development Goals (SDGs) in which land is covered partially. Mainstreaming of sustainable land use in existing UN and international governance systems such as UN conventions to allow for more coherence Better safeguarding of sustainable land use in project-level financing of bi- and multilateral devel-opment agencies and bodies. The private sector can play an increasing role in the governance of sustainable land use, but this may require e.g., a certification system. GLOBALANDS developed a new (complementary) approach for land-related indicators which integrates environmental and social aspects through the formulation of sustainable land use practices for different actors, and regions. The application of such indicators is possible within the process of regionally or nationally implementing the SDGs.A final outcome of the GLOBALANDS project are policy recommendation for Germany policy to foster sustainable land use in the international governance system. Also, key open (research) questions were identified.
Sustainable Land Use Standard (GLOBALANDS) 03.10.2015 Umweltrecht & Governance Bücher

On the pathway to climate neutrality, EU member states are obliged to submit national energy and climate plans (NECPs) with planned policies and measures for decarbonization until 2030 and long-term strategies (LTSs) for further decarbonization until 2050. We analysed the 27 NECPs and 15 LTSs submitted by October 2020 using an inter-rater method. This paper focuses on energy sufficiency policies and measures in the transport sector. We found a total of 236 sufficiency policy measures with more than half of them (53 %) in the transport / mobility sector. Additionally, we found 41 measures that address two or more sectors (cross-sectoral measures). From the explicit sufficiency measures within the transport sector, 82 % aim at modal shift. A reduction of transport volumes is much less addressed. Countries plan to use mainly fiscal and economic instruments. Those are in many cases investments in infrastructure of low-carbon transport modes and taxation instruments. Plans on decarbonisation measures are also frequently mentioned. The majority of cross-sectoral measures are carbon taxes or tax reforms, also economic instruments. On the one hand it is encouraging that Member States strongly emphasize the transport sector in their NECPs and LTSs – at least quantitatively and concerning sufficiency measures – because this sector has been the worst-performing in climate mitigation so far. On the other hand, the measures described seem not sufficient to reach ambitious climate targets, and we doubt that the presented set of policy instruments will get the transport sector on track to mitigate greenhouse gas emissions in the necessary extent.
long-term strategies 11.10.2021 Publikationen Energie & Klimaschutz Bücher

The development of European power markets is highly influenced by integrated electricity and heat systems. Therefore, decarbonization policies for the electricity and heat sectors, as well as numerical models that are used to guide such policies, should consider cross-sectoral interdependencies and need evaluation. Many model-based policy assessments evaluate potential benefits of combined heat and power. However, the extent of benefits, such as emissions reductions, found in existing studies is subject to considerable variations. While scenarios and model inputs may partly explain such variations, differences in results may also be related to the model formulation itself. Against this background, this study is the first to compare electricity market models in the context of potential benefits of integrated electricity and heat systems in decarbonization. Five large-scale market models covering electricity and heat supply were utilized to study the interactions between a rather simple coal replacement scenario and a more ambitious policy that supports decarbonization through power-to-heat. With a focus on flexibility provision, emissions reduction, and economic efficiency, although the models agree on the qualitative effects, there are considerable quantitative differences. For example, the estimated reductions in overall CO2 emissions range between 0.2 and 9.0 MtCO2/a for a coal replacement scenario and between 0.2 and 25.0 MtCO2/a for a power-to-heat scenario. Model differences can be attributed mainly to the level of detail of combined heat and power modeling and the endogeneity of generation investments. Based on a detailed comparison of the modeling results, implications for modeling choices and political decisions are discussed.
comparison approach 26.05.2022 Publikationen Energie & Klimaschutz Bücher

Even though environmental innovations are generally considered a key element towards a green growth strategy, especially for the case of energy efficiency innovations, the impact on climate goals has been subject to a long-running debate. On the one hand, energy efficiency innovations provide a huge cost-effective CO2 reduction potential. On the other hand, increasing energy efficiency implies cost reductions which in turn may lead to increased consumption due to the so-called rebound effect. Our study investigates the long-term environmental impact of energy efficiency innovations on the EU-27 residential electricity demand (excluding heating systems) using a detailed bottom-up modelling approach. Assuming a rebound effect of 10 %, we show that the diffusion of energy efficiency technologies with current policy levels provides savings of around 140 TWh and additional 270 TWh may be saved through additional policy measures accelerating the diffusion and development of new technologies until 2030. By contrast, assuming a (rather pessimistic) rebound effect of 40 %, the savings are reduced to around 95 and 180 TWh until 2030, respectively. We conclude that there is a clear case for ambitious policies to support energy efficiency innovations for the residential sector, which ideally should be complemented by measures to limit the rebound effect.
case of EU residential electricity use 28.09.2015 Energie & Klimaschutz Bücher

The Open Energy Ontology (OEO) is a BFO-based ontology for the domain of energy system analysis. Core of this domain is the concept of energy. Since the concept of energy is ambiguous and has not (yet) been introduced into BFO, we describe why the OEO classifies energy as a quality. We present how energy is differentiated from energy carriers, fuels and other related concepts. The process of energy conversion makes it possible to depict many different types of its generation and usage. Further, we describe the concept of origin of matter and energy. In this article, we define the core concepts of the OEO according to the BFO. We thus demonstrate how the OEO enables the consistent use of core concepts throughout the energy system analysis domain. Published in: Proceedings of the Joint Ontology Workshops 2022, Episode VIII: The Svear Sommar of Ontology, Jönköping, Sweden, August 15-19, 2022, CEUR-WS.org. © 2022 Copyright for this paper by its authors. Use permitted under Creative Commons Attribution 4.0 International (CC-BY-4.0). CEUR Workshop Proceedings http://ceur-ws.org ISSN 1613-0073 CEUR Workshop Proceedings (CEUR-WS.org)
Open Energy Ontology 28.11.2022 Publikationen Energie & Klimaschutz Bücher

Even though environmental innovations are generally considered a key element towards a green growth strategy, especially for the case of energy efficiency innovations, the impact on climate goals has been subject to a long-running debate. On the one hand, energy efficiency innovations provide a huge cost-effective CO2 reduction potential. On the other hand, increasing energy efficiency implies cost reductions which in turn may lead to increased consumption due to the so-called rebound effect. Our study investigates the long-term environmental impact of energy efficiency innovations on the EU-27 residential electricity demand (excluding heating systems) using a detailed bottom-up modelling approach. Assuming a rebound effect of 10 %, we show that the diffusion of energy efficiency technologies with current policy levels provides savings of around 140 TWh and additional 270 TWh may be saved through additional policy measures accelerating the diffusion and development of new technologies until 2030. By contrast, assuming a (rather pessimistic) rebound effect of 40 %, the savings are reduced to around 95 and 180 TWh until 2030, respectively. We conclude that there is a clear case for ambitious policies to support energy efficiency innovations for the residential sector, which ideally should be complemented by measures to limit the rebound effect.
case of EU residential electricity use 28.09.2015 Energie & Klimaschutz Bücher