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Power systems are undergoing a profound transformation towards cyber- physical systems. Disruptive changes due to energy system transition and the complexity of the interconnected systems expose the power system to new, unknown, and unpredictable risks. To identify the critical points, a vulnerability assessment was conducted, involving experts from the power as well as the information and communication technologies (ICT) sectors. Weaknesses were identified, e. g., the lack of policy enforcement, which are worsened by the unreadiness of the actors involved. Due to the complex dynamics of ICT, it is infeasible to keep a complete inventory of potential stressors to define appropriate preparation and prevention mechanisms. Therefore, we suggest applying a resilience management approach to increase the resilience of the system. It aims at better riding through failures rather than building higher walls. We conclude that building resilience in cyber-physical power systems is feasible and helps in preparing for the unexpected.

The initial article chooses a historical approach to the theoretical discussion of resilience notions by reconstructing the emergence of its manifold layers of meaning. The first part focuses on metaphor and concept transfers, each of which has produced a disciplinary conceptual tradition and a culture of resilience. The second part then describes the genesis of the system-theoretical "resilience framework" of the biologist and ecosystem researcher C. S. Holling, which still shapes the resilience discourse to this day. The second article reconstructs the roots and the development steps of the concept of resilience in energy systems, starting in the alternative energy discourse in the early 1970ies and ending in the first elaborated theory of resilient energy system design by Amory Lovins in 1982. Risk management and resilience management share important features and they both aim at preparing systems for uncertain threats or stressors and their impacts. Still, the level of uncertainty regarding stressors and impacts, the type of systems addressed and the systems' dynamics allow for a distinction between the applicability of either risk or resilience management. The third article provides a short introduction to the specifics of each strategy for coping with uncertainty and presents guidelines for designing a resilient critical infrastructure. ; 217

Das Projekt DelphiNE verfolgt folgende zentrale Ziele: Initiierung einer Diskussion zur Rolle der NE-Metallindustrie in einer "Green Economy" und Herausarbeitung möglicher Entwicklungsszenarien. Die Schwerpunkte liegen hierbei auf der Substitution von Primärrohstoffen durch Sekundärrohstoffe, der Substitution von fossilen Brennstoffen und Reduktionsmitteln, der Steigerung der Ressourceneffizienz, dem Einsatz erneuerbarer Energien zur dezentralen Stromversorgung der Unternehmen und dem Recycling von bisher ungenutzten Abfällen. Zentrales methodisches Werkzeug ist die Delphi-Befragung Anhand eines Fragebogens, der auf Grundlage einer umfangreichen Literaturrecherche sowie einer Workshop-basierten Experteneinbindung entwickelt wurde, wurden in zwei Befragungsrunden von Eingangs 130 Innovationsmaßnahmen 71 Maßnahmen mit hohem Potenzial identifiziert, die in einem "Zukunftsworkshop" tiefergehend diskutiert und bewertet wurden. Auf dieser Basis ergeben sich verschiedene Maßnahmenbündel, die auf eine gesteigerte Ressourcenschonung in der NE-Metallindustrie in einer Green Economy abzielen. In einem nachfolgenden "Szenarienworkshop" wurden ergänzend Rahmenbedingungen (interne und externe Einflussfaktoren) für die Maßnahmenbündel erarbeitet, diskutiert und bewertet. Auf dieser Basis wurden zwei konsistente Rahmenszenarien abgeleitet.

Power systems are undergoing a profound transformation towards cyber-physical systems. Disruptive changes due to energy system transition and the complexity of the interconnected systems expose the power system to new, unknown and unpredictable risks. To identify the critical points, a vulnerability assessment was conducted, involving experts from power as well as information and communication technologies (ICT) sectors. Weaknesses were identified e.g.,the lack of policy enforcement worsened by the unreadiness of involved actors. The complex dynamics of ICT makes it infeasible to keep a complete inventory of potential stressors to define appropriate preparation and prevention mechanisms. Therefore, we suggest applying a resilience management approach to increase the resilience of the system. It aims at a better ride through failures rather than building higher walls. We conclude that building resilience in cyber-physical power systems is feasible and helps in preparing for the unexpected.

Insgesamt unterstreichen die Beiträge in diesem artec-paper, dass neue Erkenntnisse und Einsichten möglich werden, wenn die beiden Konzepte – das eher naturwissenschaftlichtechnisch fundierte Konzept Industrial Ecology und das eher sozialwissenschaftlichökonomische Konzept Systems of Provision – wechselseitig und mit Blick auf die Fragen und Probleme eines nachhaltigen Konsums aufeinander bezogen werden. ; 162