Foreword

<abstract xmlns="http://www.w3.org/1999/xhtml">The mainstreaming of concepts related to the Green Economy, an action-oriented approach to reach sustainable development, has increased demands for integrated models that can shed light on the complex relations existing across social, economic and environmental indicators. A gap exists, whereby our thinking is rapidly evolving, but the tools available are still in the vast majority of cases sectorial, leading to planning processes taking place in silos. To avoid the emergence of side effects, and anticipate future threats and opportunities, a more systemic approach is needed. The Green Economy Model (GEM) was created taking into account four main capitals and their interconnections: physical capital, human capital, social capital and natural capital. The application of GEM in 10 countries has shown its capability to coherently represent reality and generate results that can more effectively inform decision making.</abstract>

School of Public Leadership, Faculty of Economic and Management Sciences, Stellenbosch University, Private Bag X1, Stellenbosch 7602, South Africa

KnowlEdge Srl, 35, via Col Di Lana, Castellanza 21053, Italy

Moving Towards Integrated Policy Formulation and Evaluation: The Green Economy Model

<abstract xmlns="http://www.w3.org/1999/xhtml">A system dynamics model has been developed for the power sector of Mauritius, which captures a range of complex interactions between the economic, social and environmental aspects of the national economy, with deeper emphasis on the role of energy in these interactions. The model has been validated by replicating the historical trends of key development indicators, and its results were compared to the projections of the national utility company. The validation process shows that the model provides a faithful representation of the actual electricity sector of Mauritius, and can be easily adapted to the use of different assumptions. This paper describes the main characteristics of the model and its results as compared to electricity demand projections carried out by the Central Electricity Board to 2022. The results suggest that further analysis could be done to test alternative low carbon investment scenarios.</abstract>

Centre for Systemic Planning, 74 Societe La Fleche, La Gaulette, Mauritius

ELIA – Ecological Living in Action, 74 Societe La Fleche, La Gaulette, Mauritius

System Dynamics Modelling of the Power Sector in Mauritius

<abstract xmlns="http://www.w3.org/1999/xhtml">A participatory system dynamics modelling approach is advanced to support conceptualization of feedback processes underlying ecosystem services and to foster a shared understanding of leverage intervention points. The process includes systems mapping workshop and follow-up tasks aiming at the collaborative construction of causal loop diagrams. A case study developed in a natural area in Portugal illustrates how a stakeholder group was actively engaged in the development of a conceptual model depicting policies for sustaining the climate regulation ecosystem service.</abstract>

Conceptualizing Stakeholders’ Perceptions of Ecosystem Services: A Participatory Systems Mapping Approach

<abstract xmlns="http://www.w3.org/1999/xhtml">When the renewable energy is used, the challenge is match the supply of intermittent energy with the demand for energy therefore the energy storage solutions should be used. This paper is dedicated to hydrogen accumulation from wind sources. The case study investigates the conceptual system that uses intermitted renewable energy resources to produce hydrogen (power-to-gas concept) and fuel (power-to-liquid concept). For this specific case study hydrogen is produced from surplus electricity generated by wind power plant trough electrolysis process and fuel is obtained by upgrading biogas to biomethane using hydrogen. System dynamic model is created for this conceptual system. The developed system dynamics model has been used to simulate 2 different scenarios. The results show that in both scenarios the point at which the all electricity needs of Latvia are covered is obtained. Moreover, the methodology of system dynamics used in this paper is white-box model that allows to apply the developed model to other case studies and/or to modify model based on the newest data. The developed model can be used for both scientific research and policy makers to better understand the dynamic relation within the system and the response of system to changes in both internal and external factors.</abstract>

System Dynamic Model for the Accumulation of Renewable Electricity using Power-to-Gas and Power-to-Liquid Concepts

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Environmental and Climate Technologies

 Environmental and Climate Technologies provides a forum for information on innovation, research and development in the areas of environmental science, energy resources and processes, innovative technologies and energy efficiency. Authors are encouraged to submit manuscripts which cover the range of topic from bioeconomy, sustainable technology development, life cycle analysis, eco-design, climate change mitigation, innovative solutions for pollution reduction to resilience, the energy efficiency of buildings, secure and sustainable energy supplies. The Journal ensures international publicity for original research and innovative work.  A variety of themes are covered through a multi-disciplinary approach, one which integrates all aspects of environmental science:   Sustainability of technology development  Bioeconomy  Cleaner production, end of pipe production  Zero emission technologies  Eco-design  Life cycle analysis  Eco-efficiency  Environmental impact assessment  Environmental management systems  Resilience  Energy and carbon markets  Greenhouse gas emission reduction and climate technologies  Methodologies for the evaluation of sustainability  Renewable energy resources  Solar, wind, geothermal, hydro energy, biomass sources: algae, wood, straw, biogas, energetic plants and organic waste  Waste management  Quality of outdoor and indoor environment  Environmental monitoring and evaluation  Heat and power generation, including district heating and/or cooling  Energy efficiency   Why subscribe and read  The ECT Journal covers wide range of issues related to environmental and climate change technologies: possible applications of renewable energy resources, energy efficient power supply, improvement of energy efficiency of buildings, innovative solutions for reduction of air and water pollution, securing of power supply, as well as topical issues of ensuring further development of society.  Why submit   The Journal ensures international publicity for original research and innovative work.  It is a peer reviewed journal.  High impact and visibility.  Worldwide readership.  High-quality publication in both of form i.e online as well as hard copy for all authors.  Efficient publishing process.  Easy process of paper submission by using Open Journals system.  The journal is indexed in SCOPUS, Web of Science, DOAJ, EBSCO, Naviga and other services.   Rejection Rate   37%   Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's users in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 