1. General Introduction2. Traditional power markets and an evolution to smart grids3. Sustainability of the smart grids4. Renewable energy sources (RES), power markets and smart grids5. P2P (platform) markets and sharing economy of the smart grids6. Consumers, prosumers and the smart grid7. The role and perception of energy through the eyes of the society8. Smart grids of tomorrow and the challenges for the future9. Conclusions