Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009. on the promotion of the use of energy from renewable sources" is an important document that has become fundamental in the field of energy policy of the European Union. This work, created by a team of authors, not only highlights the legal aspects of the directive, but also immerses the reader in the context in which it was developed, as well as in its implications for EU member states and the global community. The book examines in detail the key provisions of the directive aimed at increasing the share of renewable energy sources in the total energy balance of the European Union. The authors focus on how these measures can contribute to reducing dependence on fossil fuels, improving the environmental situation and combating climate change. An important aspect is also the discussion of mechanisms that will contribute to the realization of the goals, including financial instruments, technologies and innovations. This book will be of interest to a wide range of readers, including students, graduate students and faculty in the fields of energy, ecology and international law. It can also attract the attention of professionals working in the energy sector, as well as anyone interested in sustainable development and environmental policy. The age category of readers is not limited, as the issues raised in the book are relevant both for young people seeking new knowledge, and for more mature professionals who want to update their knowledge about EU legislative initiatives . The topics raised in the book cover not only the technical aspects of renewable energy, but also the social, economic and political factors influencing their implementation. The authors emphasize the importance of a multidisciplinary approach to solving problems related to energy security and sustainable development. The reader will be able to see how the directive affects different sectors of the economy and what opportunities are open for business and investment in the field of green technologies. The style of the authors is distinguished by clarity and accessibility, which makes complex legal and technical terms understandable to a wide audience. The book is saturated with examples from the practice of the EU member states, which allows the reader to better understand how the directive was implemented in practice and what results were achieved. In addition, the authors share forecasts for the future, discussing how changes in legislation can affect the global energy market. If you are interested in the topics of sustainable development, ecology and energy policy, this book will be a real find for you. It will not only expand your knowledge of European Union legislative initiatives, but also inspire you to think about how each of us can contribute to creating a more sustainable future. In conclusion, the European Parliament and Council Directive 2009/28/EC is not just a compilation of legal norms, but an important step towards understanding our energy dependence and responsibility for the future of the planet. Read, analyze and act - the book will become a reliable companion on the way to understanding the complex processes taking place in the energy world