Nourredine Hadjsaïd is Professor at Institut Polytechnique de Grenoble in France, Director of the IDEA Consortium and a member of the International Energy Agency. Jean-Claude Sabonnadière is Emeritus Professor at the Institut Polytechnique de Grenoble in France. He is also an advisor to the President of the Industrial Cluster TENERRDIS (Alternative Energies), a consultant on energy systems and innovation, Life Fellow of the IEEE (USA), Fellow of IEE (UK), Emeritus of SEE (France).