This book presents current research in the diverse field of energy. Topics discussed include power supply and demand in the electricity market; energetic and exergetic characterization of a new type of polypropylene capillary heat exchanger; low energy consumption air conditioning solutions for future green data centres; closed cycle gas turbine using CF4 and the working fluid; biofuels incentives; optimum economic dispatch of real power generation in two-generator power plant and overview of U.S. energy.