The main objective of this project is to make Lupeni Technological High School more energy efficient and to reduce greenhouse gas emissions. The proposed works aim to reduce primary energy consumption by 60% and reduce carbon dioxide emissions by at least 80%. In addition, the aim is to improve students' educational experience and improve the quality of life in high school. To achieve these goals, modern equipment and renewable energy production systems such as solar panels will be purchased. The energy efficiency of the building will not only reduce costs and emissions, but also serve as a valuable lesson for children and the community about the importance of sustainability and environmental protection.