Smart grids aim at successfully implementing a new model for power and energy systems, accommodating all the involved energy resources and players. Micro grids and buildings are relevant building blocks of efficient smart grids, which can significantly contribute to the overall efficiency increase trough the use of intelligent techniques. Ontologies, context awareness, and computational intelligence are relevant aspects of the path leading to the successful implementation of those concepts in practice. The contributors for this special session will bring their experience in the development and use of intelligent solutions for micro grids and buildings management. The analysis of the successes and limitations of the solutions implemented so far will enable a fruitful discussion pointing to key topics to be addressed in the field.