This E-book covers various topics and technologies involving energy systems that represent an effort to reduce environmental pollution and provide grounds for alternative or renewable energy sources. The E-book is a convergence point for state-of-the-art research with preliminary but confirmed results. Topics covered in this e-book include transport electricity generation bio-fuels Homogenous Charge Combustion Ignition research kinetics thermodynamics combustion (photovoltaic) solar energy biomass hydrogen combustion hydrogen stocking wind power wind energy hydro-electric power plants and fuel cells. The interdisciplinary content combines energy source engineering fuel technology and environmental chemistry. This E-book serves as a basic source of information on alternative energy for scientists academics and industrialis ts by promoting and disseminating knowledge about green energy concerns.