The MOOC aims to give an overview and the knowledge for the interconnection of the production and consumption of energy with the environment under the context of the energy transition. In particular, using a case based approach, and tools’ analysis, the course will start with the basic and core presentation of the impact of the energy generation and consumption to the environment on terms of resources consumption, gasses emission, impact on land and water. After examples of energy and environmental performance indicators calculations and presentation of different approaches and case studies, the implementation of energy efficiency and RES in the environment is evaluated. Typical approaches involving consumer behavior and products selection is included. Basic aspects related to evaluate the environmental impact of products, their end-of-life and basic principles of eco-design are also presented.