This book reviews the current status of wind, solar, biomass, hydroelectric, wave, tidal, and geothermal energy sources, including estimates of the available supply of each and current prices. As existing solar photovoltaic cells can now provide energy at prices close to that of other sources, it can be expected that solar energy will witness a rapid increase in use parallel to the increase in wind energy over the past decade. The book provides an encyclopedic forum for disseminating and exchanging up-to-date scientific information on theoretical, generic, and applied areas of knowledge. The topics deal with new devices and circuits for cutting edge energy systems, photovoltaic/solar, thermal, wind energy systems, tidal energy, fuel cell systems, bioenergy, geo-energy, sustainable energy resources, energy storage systems, energy market management-economics, off-grid isolated energy systems, energy in transportation systems, energy resources for portable electronics, intelligent energy power transmission, distribution & interconnectors, energy-efficient utilization, environmental issues, energy harvesting, nanotechnology in energy, policy issues on renewable energy, building design, power electronics in energy conversion, new materials for energy resources and RF powered magnetic field energy devices.