One of the challenges facing society in the 21st century is providing sustainable energy for a growing world population. Widely reported warnings have emphasized the need to develop new sources of energy, while at the same time preventing or reversing the degradation of the environment. Energy systems are pervasive, affecting nearly every aspect of society. The increasing complexity of these systems, along with increasing environmental constraints, requires practicing professionals in the field that have knowledge, skills and abilities specific to energy system design, evaluation, construction and management.