Bioenergy is a building block of the ongoing transformation toward renewables-based energy systems. Bioenergy supply chains are regionally embedded and need to be seen in a place-based context with specific characteristics and constraints. Using a German case study, the potential of regionally embedded bioenergy chains in the past and the future is analyzed and discussed in this paper. The analysis integrates socio-ecological data and applies sustainability criteria in a multi-criteria decision analysis (MCDA) using the Preference Ranking Organization Method for Enriched Evaluation (PROMETHEE) methodology. The case study is focused on an industrial biogas fermenter in northwestern Germany, which currently uses predominantly maize as a substrate for bioenergy. Objectives for future development according to the ambitions of the UN Sustainable Development Goals and the EU Renewable Energy Directive (RED II) discussion are set and include the involvement of the farmer as biogas plant operator and other regional stakeholders. Since the focus of the research is put on the contribution of alternative biomass, such as grass, for the optimization of bioenergy settings, the question concentrates on how different mixtures of alternative biomass can be embedded into a sustainable management of both the landscape and the energy system. The main findings are threefold: (i) bioenergy supply chains that involve alternative biomass and grass from grasslands provide optimization potentials compared to the current corn-based practice, (ii) with respect to more sustainable practices, grass from grassland and alternative bioenergy supply chains are ranked higher than chains with increased shares of corn silage, and, more generic, (iii) optimization potentials relate to several spheres of the social–ecological system where the bioenergy structure is embedded. To conclude, sustainable enablers are discussed to realize optimization potentials and emphasize the integration of regional stakeholders in making use of alternative biomass and in making regional bioenergy more sustainable.

Integrated coastal management (ICM) has been considered worldwide to be a suitable approach to realizing comprehensive schemes to protect or develop coastal regions. A complex regulatory system stretching from international to local levels provides a framework for ICM practices. This raises the question whether and to what extent ICM practices have been supported by legal and policy frameworks at the international and national levels in different settings in both developed and developing countries. This paper examines four case studies in Germany, Costa Rica, Mexico and South Africa. Two research methods were used. First, a document-based analysis was conducted in two parts: a literature review of the content of ICM, and a policy and law analysis of the jurisdictions of the four case studies and at the international level (i.e., treaties and declarations). Second, a qualitative analysis was conducted based on in-depth interviews involving 21 decision-makers representing all the case studies. With a view to enhance the effective use of international and national legal and policy instruments and their implementation in a more local site specific context, this study considers four principles currently guiding ICM practices: (i) incorporation of international instruments’ principles in national legal and policy frameworks, (ii) participation, (iii) sustainable development and (iv) monitoring. An I-P-S ((I) incorporation of international instruments’ principles in national frameworks, (P) participation (S) sustainable development) diagram is used for an integrative assessment of ICM and indicates directions for further improvements at the case study sites. The embeddedness of ICM into national legal and policy frameworks is a success factor for ICM, however, it is often limited due to a lack of implementation. Furthermore, ICM can easily be jeopardized if ICM is allocated a marginalized position.

Civic energy has developed to become a key driver of a transition of the energy system to a locally-sourced, renewables-based economy whereby individual civic energy initiatives exhibit highly diverse forms and agency characteristics. Together they challenge the incumbent corporate, fossil-based energy system and its underlying techno-economic paradigm. For civic energy to meet this challenge, we argue that the potential for process optimization needs to be systematically assessed and propose a civic energy process design as a continuous improvement process in order to address the need for professionalization and capture the synergies presented by process standardization. The resulting Civic Energy Cycle deploys elements of creative destruction to identify alternative value propositions. The Cycle comprises Initiation, Planning, Roll-Out, Refection and Adoption phases, and a total of eleven process stages that extend beyond standardized technical and business processes; in addition to economic process objectives, the targeted social-economic and community benefits play a key role in shaping the process. The civic energy process is presented as a social transition framework that makes the shift in energy patterns manageable and acts as a mechanism that serves community needs.

Marine spatial planning temporally and spatially allocates marine resources to different users. The ecosystem approach aims at optimising the social and economic benefits people derive from marine resources while preserving the ecosystem’s health. Marine ecosystem services are defined as the benefits people obtain from marine ecosystems. The aim of this study is to determine which interrelations between marine ecosystem services and the marine energy industry can be identified for use in transnational marine spatial planning exemplified in the North Sea region. As the North Sea is one of the busiest seas worldwide, the risk of impairing the ecosystems through anthropogenic pressures is high. Drawing on a literature-based review, 23 marine ecosystem services provided by the North Sea region were defined and linked to seven offshore energy fields comprising oil and natural gas, wind, tides and currents, waves, salinity gradients, algal biomass, and geothermal heat. The interactions were divided into four categories: dependence, impact, bidirectional, or no interaction. Oil and natural gas, as well as algae biomass, are the fields with the most relations with marine ecosystem services while waves and salinity gradients exhibit the least. Some marine ecosystem services (Conditions for Infrastructure, Regulation of Water Flows, and Cognitive Development) are needed for all fields; Recreation and Tourism, Aesthetic and Cultural Perceptions and Traditions, Cognitive Development, and Sea Scape are impacted by all fields. The results of this research provide an improved basis for an ecosystem approach in transnational marine spatial planning.