The editors are very pleased to present the European Energy Law Report XV. The European Energy Law Report is an initiative taken by the organisers of the European Energy Law Seminar (EELS) which has taken place on a regular basis in the Netherlands since 1989. The aim of this seminar is to present an overview of the most important legal developments in the field of international, EU and national energy and climate law. Whereas the first seminars concentrated on the developments at (then) European Community level, which were the results of the establishment of an Internal Energy Market, the focus has gradually expanded to developments affecting the energy sector such as climate change and security of supply. Likewise the focus extended to developments at the national level following the implementation of the EU directives on the internal energy market, the promotion of renewable energy sources, the mitigation of climate change and the reinforcement of security of supply. This approach can also be found in the present volume.

Similar to the previous European Energy Law Reports, this book includes chapters based on papers presented at the preceding EELS, which normally takes place on an annual basis. Due to the Covid-19 pandemic and the necessary adjustments to the annual organisation of EELS, this book gathers – in four thematic parts – the main central topics discussed at the EELS of 2022 and 2023. First, it presents in Part I some legislative and judicial developments regarding the Internal Energy Market and climate change mitigation.