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Renewable sources of energy now stand poised to lead the world in new electricity supply. Supported by policies aimed at enhancing energy security and sustainability, renewable power expanded at its fastest rate to date in 2014 and now represents more than 45% of overall supply additions.

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Le Portugal a réussi à découpler plusieurs pressions environnementales de la croissance économique entre 2013 et 2019. Il a joué un rôle de premier plan dans l'approbation de la loi européenne sur le climat et a adopté la Loi-cadre portugaise sur le climat en 2021. Celle-ci doit être rapidement mise en œuvre pour atteindre la neutralité carbone d'ici 2050, améliorer la résilience aux effets du changement climatique et protéger les écosystèmes. Le Portugal a intensifié ses efforts d'adaptation, mais doit en faire davantage pour faire face aux multiples menaces, notamment l'érosion côtière, les inondations, les sécheresses et les feux de forêt. Le pays est à la traîne en matière de gestion des déchets. Par ailleurs, l'augmentation des prélèvements d'eau douce dans les régions du sud, où l'eau est rare, est préoccupante. Il s'agit du quatrième examen des performances environnementales du Portugal. Il fournit une évaluation, fondée sur des faits, des progrès du pays vers ses objectifs environnementaux au cours de la dernière décennie. Les 26 recommandations visent à aider le Portugal à améliorer ses performances environnementales, en accordant une attention particulière à la neutralité carbone. La présente version abrégée contient le résumé, de même que l'évaluation et les recommandations officielles du rapport. Le rapport complet est disponible en anglais sur le site web de l'OCDE.

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Pressure on the European and global gas markets has eased since the beginning of 2023 due to favourable weather conditions and timely policy actions. By the end of Q1 2023 European hub and Asian spot liquefied natural gas (LNG) prices had fallen below their summer 2021 levels, albeit remaining well above their historic averages. The steep decline in natural gas demand reduced the need for storage withdrawals in Europe and the United States over the 2022/23 winter. As a result, storage sites closed the heating season1 with inventory levels standing well above their five-year average. This is expected to reduce injection demand during the summer of 2023, and potentially ease market fundamentals.The improved outlook for gas markets in 2023 is no guarantee against future volatility and should not be a distraction from measures to mitigate potential risks. Global gas supply is set to remain tight in 2023 and the global balance is subject to an unusually wide range of uncertainties. These include adverse weather factors, such as a dry summer or a cold Q4, lower availability of LNG and the possibility of a further decline in Russian pipeline gas deliveries to the European Union.This new issue of the quarterly Gas Market Report provides an overview of recent gas market developments during the 2022/23 heating season, with a forecast for 2023.

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The reprint provides a comprehensive review of various topics related to sustainable building design and operation, with a particular focus on energy efficiency and environmental impact. It covers a wide range of topics, including visual comfort assessment, decision-making processes of residents, low-cost devices for CO2 monitoring, and the impact of the COVID-19 pandemic on residential energy use. The reprint also includes discussions on solar energy in urban planning, cost-optimal measures for energy renovation, and passive solar solutions for buildings. It provides insights into the use of different materials and strategies for improving the energy efficiency of building envelopes, including the integration of phase change materials and the use of reflective coatings on building roofs. Several case studies are presented in the book, which explores the implementation of sustainable design strategies in different building types and climates. The authors also discuss the use of advanced modeling techniques to simulate the performance of different building systems, including vertical greenery systems and the solar cadaster.

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China Power System Transformation has a two-fold objective. First, it provides a summary of the state of play of power system transformation (PST) in the People's Republic of China ("China") as well as a comprehensive discussion of PST internationally. This includes a comprehensive review of all possible sources of power system flexibility (power plants, grid infrastructure, storage, and demand-side response) and a detailed discussion of market, policy, and regulatory frameworks to effectively mobilise power system flexibility. Second, it presents findings from a detailed power sector modelling exercise for China in 2035, building on the 2018 World Energy Outlook New Policies and Sustainable Development Scenarios. The modelling identifies the establishment of spot markets and trade between provinces as two of the main elements to improve system operation efficiency in China. In order to integrate very high shares of variable renewables consistent with the WEO SDS, activating the demand side - especially electric vehicles - and targeted use of electricity storage are found to be crucial for an accelerated transformation of the Chinese power system.

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