‘Renewable energy systems’ describes the different ways of harnessing renewable energy and methods of converting it into electricity, gas, or liquid fuel, and their advantages and disadvantages. Renewable energy systems use a broad range of technologies to capture and convert energy from natural energy sources that are not diminished as they are utilized. Most renewable energy comes from the sun. Natural processes convert heat from the sun into movements of wind and water in the atmosphere that are then used to generate electricity. Solar radiation provides the energy to grow biomass and sunlight is used to generate electricity directly through the photovoltaic effect. Other significant sources of renewable energy are the tides, and geothermal heat.
