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Abstract Renewable energy and energy efficiency are recognized among the key factors of transitioning towards a low-consumption and low-carbon society. In order to achieve such transition, the government policies should be aimed at meeting the renewable energy generation and energy efficiency targets of specific localities. Nonetheless, these targets vary between different urban regions, and there is limited knowledge on the correlation between energy transition and urbanization levels. The aim of this paper is to identify that correlation in urban regions. This study places Italian regions under the microscope of an empirical investigation. The study adopts a two-step analysis that provides a useful model for regional analyses. The results of the study consolidates our understanding and highlights that the energy transition process requires greater efforts concerning social participation and provision of incentives for renewable energy production, mainly in the less urbanized areas.

During the last several decades, the diversification of economic activities has become a paramount policy for nations and cities with heavy dependence on a single economic driver. Particularly island economies, relying mainly on tourism income, are among the most vulnerable ones to the shocks of global financial crises. In the recent years, some of these tourist islands had attempts to diversify their economic activities by moving towards a knowledge and innovation economy. This paper places one of these islands—Florianópolis, the capital city of the Brazilian state of Santa Catarina—under the microscope to address the question of ‘what it takes to transform a tourist island into an innovation capital’. In order to tackle this question, the study examines economic, social, spatial, and governance conditions and performances, along with the plans and processes of Florianópolis in moving towards an internationally recognized smart innovation island. The methodologic approach includes systematic review of the literature and qualitative analysis of the key development domains of Florianópolis through the lens of knowledge-based urban development. The results of this study provide insights into how to transform a resource-based economy into a knowledge-based one—by disclosing the transition journey of Florianópolis, including progress, challenges, and the new path creation processes. The findings are particularly useful for tourist islands that are aiming for an aspiring knowledge-based urban development and smart city transformation.

Abstract Digitalisation of urban metabolism circularity provides policymakers, urban managers, planners and administrators with a useful tool for identifying, controlling and evaluating a wide range of data concerning the flows of social, environmental and economic resources. This approach is based on the crucial role of fixed and mobile digital infrastructures such as real-time monitoring stations, GPS tracking sensors, augmented reality, virtual sharing platforms, social media dashboards, smart grids, and the like in the development and strengthening of the quality and efficiency of the circularity of resources. For these reasons, the integration of digital technologies in mobility, waste, water and wastewater management, energy efficiency, safety, and so on, represents a crucial aspect for cities involved in the circularity of their urban metabolism. Through a systematic literature review and case study approaches, the analysis disclose a wide-range of initiatives adopted by several European circular cities that optimise the circularity of urban metabolic flows, and contributes to the efforts in increasing understanding and awareness of the digitalisation driven by the urban metabolism circularity.

Solid biomass planning is a complex and multifaceted process, as it aims to achieve a large number of objectives while involving various stakeholders. This complexity heightens particularly in marginal areas, where socioeconomic weaknesses are critical obstacles to the sustainable development of these territories. This paper proposes an integrated method for dealing with such problem by using a combined optimization approach. This is done in order to implement the ‘best’ investment solution to be realized in marginal areas, and a benefit cost analysis to assess the feasibility of investment for each involved operator. The methodology of the study maximizes the utility of the stakeholders in the respect of the territory. The effectiveness of the proposed approach has been demonstrated through a twofold and comparative application, both in Italy and in Germany, in order to verify the results.

Digital technologies engaged in urban metabolism for efficiency provide policymakers, urban managers, and planners with useful instruments to collect, monitor, analyze, and evaluate the circularity of environmental, social, and economic resources to improve their effectiveness and quality. At present, the digital technology-based approach is strategic for circular cities engaged in the development of smart and sustainable actions in the fields of mobility, energy, environment, waste, telecommunications, and security. Through the ‘Circular Resource Efficiency Management Framework’ developed by the European Commission, this paper generates insights into the digitalization practices of the circularity of urban metabolism by analyzing the initiatives implemented by the municipalities of Kaunas, Flanders region, Porto, Prato, The Hague, and Oslo, which constitute the Partnership on Circular Economy (PCE) of the Urban Agenda of the European Union. The results of the analysis provide a wide range of practices such as real-time monitoring stations for water and energy consumption, digital cameras for controlling vehicle flows, web platforms for sharing goods and services, and tracking sensors for public transport, which aim to optimize the efficiency of the circularity of urban metabolic flows. This study increases the understanding and awareness of digital technologies in this paradigm shift.

Unarguably, smart, sustainable, and knowledge-based development is critical for securing a livable future for our rapidly urbanizing world. The aim of this study is to generate insights into determining effective and efficient strategies to increase sustainability and innovation capabilities of cities to achieve long-term desired urban outcomes. This paper places the city of Florianópolis (Brazil) under the smart, sustainable, and knowledge-based urban development microscope. The methodological approach of the study involves a qualitative analysis through surveys (100 submitted forms, 55 responses received) and interviews (12) with key experts and stakeholders from Florianópolis. The findings of the study reveal that Florianópolis’ innovation ecosystem has high potential to thrive, but the city still has structural issues to deal with first, related to the gap between the potential to grow, and acknowledgement from key actors of the city to support the overall territory development considering the complex dimensions. This issue suggests amplifying the ecosystem’s vision, including different sectors and, especially, addressing innovation for the common good. The insights generated from the investigation of Florianópolis’ case are also invaluable to other cities’ planning for strategizing their transformation, and seeking smart, sustainable, and knowledge-based development pathways.

In the context of built environment, buildings are amongst the principal generators of environmental externalities. Life Cycle Assessment (LCAs) of energy efficiency and environmental performance of buildings are deemed critical to address sustainable development issues. This paper aims to investigate LCA as a tool to support the design of buildings with two objectives in mind. Firstly, it determines the role of LCA in the evaluation of energy efficiency and environmental performance of buildings. Secondly, it elaborates LCA of these constructions through the lens of international standards. The methodological approach of the study leads to development of a whole building life cycle formula that sums up the contributions from a set of LCAs. By doing so, the paper highlights the necessity of LCA applications in buildings, and the need for minimisation of resource and energy consumption, and environmental impact. The study helps in better understanding the way LCA supports the search for and identification of innovation pathways in buildings. This paper contributes to the efforts in providing theoretical expansions in LCA of buildings and stimulates the creation of technical standards for the residential building construction sector.