Searching the directory: Technology Types Wind Plants that convert the kinetic energy of wind into electricity. Solar (PV and Thermal) Comprising both solar photovoltaic technologies that convert solar radiation to electricity and solar thermal technologies that convert solar radiation to heat for hot water production or air heating. Bioenergy Energy produced from organic matter, which may either be used directly as a fuel or processed into liquids and gases. Small hydropower Comprising small hydro (10 to 50 MW of generating capacity) and mini hydro (less than 10 MW), small hydro plants convert the kinetic energy of water into electricity. Geothermal Plants that capture the heat emitted from within the earth's crust, usually in the form of hot water or steam. Fuel Cells Cells capable of generating an electrical current by converting the chemical energy of a fuel directly into electrical energy. Cleaner Fuels Low-pollution fuels that can replace ordinary gasoline. These alternative fuels include gasohol (gasoline-alcohol mixtures), ethanol, methanol, CNG (compressed natural gas), LPG (liquefied petroleum gas), and others. Energy Efficiency EE technologies are generally used to reduce consumption by end-users, and so are called demand-side technologies. They bring about environmental benefits by reducing the demand for energy. Examples include high efficiency motors and lighting, district heating and heat/electricity co-generation systems, heat pumps, and building insulation.