The book "Energy Economics" aims to explain important concepts in a simple way for policymakers, researchers, practitioners, and students. It covers topics like energy demand, supply, markets, pricing, policy, regulation, and the environment. The book is divided into six parts, each focusing on different aspects of energy economics. It discusses energy efficiency, fossil fuels, renewable energy, energy markets, pricing, policy objectives, and the impact of energy on the environment. Overall, the book provides a comprehensive overview of how energy production and consumption affect the economy and society.