Green hydrogen production, distribution and use is seen as a central element of a carbon-neutral economy. Specifically, the establishment of offshore green hydrogen production facilities amidst wind energy parks is seen as a promising concept for European countries like Germany. Yet, such green hydrogen manufacturing and distribution concepts are not evaluated in a comprehensive sustainability perspective. In order to avoid unintended sus-tainability effects, an ex-ante evaluation regarding the three triple bottom line perspectives of environmental, economic and social sustainability is advisa-ble. As especially offshore green hydrogen production and transportation concepts are completely new, even the evaluation concept to be used for such a required comprehensive sustainability check is largely missing. Alt-hough dedicated evaluation and decision support methods in the fields of LCA and SLCA are available for sustainability evaluation issues, the ques-tion of selecting matching method frameworks for a future offshore-based green hydrogen supply chain is yet to be answered. This contribution is pro-vided by this paper in a conceptual approach based on existing method sets and analytical results for neighboring application fields like solar or biogas green hydrogen production and distribution.

Green hydrogen, produced mainly by electrolysis, is a promising energy carrier to de-fossilise different economy sectors, from heavy industry to logistics. A fully transformed economy would use hydrogen as a process gas and a fuel for heat generation and vehicles. However, since the technology to produce green hydrogen has yet to be available at an industrial scale, there are no projections for forming regional hydrogen hubs. This article contributes to synthesising a holistic framework to specify and optimise hydrogen-based applications in logistics from an ecological and economic perspective. These applications utilise logistics macrostructures, like logistics hubs. Alternatively, they may use industrial supply chains, like direct reduced iron (DRI) based steel plants, which modify their operations and transform their logistic ecosystems. The framework includes a configuration of policies and economic boundary conditions that influence the logistic hubs’ transformation paths. The article describes the synthesis of the framework based on an initial problem analysis and a systematic literature review. The framework helps policymakers and planners evaluate and optimise the composition and design of hydrogen and logistics hubs.

Animal feed supply networks heavily rely on just-in-time deliveries between raw material producers, retailers, manufacturers, and customers. Accordingly, transportation contributes largely to this industry's CO₂e footprint. This article extends an existing simulation model with capabilities to track the CO₂e footprint of individual products across the supply network. It further integrates the capability to simulate the use of electric transport vehicles. This article presents a simulation study to investigate using electric trucks instead of diesel trucks in terms of \coe and kilometers traveled. The results show that the animal feed distribution is particularly suitable for electric vehicles due to the comparably localized area covered by these supply networks and can achieve reductions of up to 70 % CO₂e for a well-utilized fleet.