Focusing on energy efficiency and renewable energy, this handbook covers basic energy principles, processes, and technologies for solar, thermal, wind, geothermal, and biomass energy conversion. Practical in approach, the book covers technologies currently available or expected to be ready for implementation in the near future. Topics include hydrogen power, fuel cells, energy conservation in buildings and industry, transportation systems, and energy audits. Contributions from experts worldwide provide a comprehensive and international survey of the field.