The Ninth IASTED International Conference on Power and Energy Systems (EuroPES 2009) will serve as a major forum for international researchers and professionals to present their latest research, results, and ideas in all areas of power and energy systems. EuroPES 2009 aims to strengthen relations between the power industry, research laboratories, and universities. All papers submitted to this conference will be double blind evaluated by at least two reviewers. Acceptance will be based primarily on originality and contribution. EuroPES 2009 will be held in conjunction with the IASTED International Conference on: Applied Simulation and Modelling (ASM 2009) Artificial Intelligence and Soft Computing (ASC 2009)