Renewable energies are inexhaustible sources of energy or are rapidly renewing themselves (at the level of human life). There are several renewable energies: solar energy, wind energy, Geothermal energy, The marine energies, hydraulic energy, Energy from biomass. What is the use of renewable energies? With solar energy, we can produce electricity (thanks to photovoltaic panels) and heat (thanks to solar thermal panels). These panels are often visible on the roof of houses, hangars and even some shops. Wind turbines generate electricity. We can install wind turbines at sea and on Earth. Geothermal energy uses the heat stored below the surface of the Earth. This heat is used to heat buildings or produce electricity. Marine energies include tidal energy (wave movement), wave energy (wave motion), hydro-electric energy (sea currents), thermal energy (temperature difference between the bottom and surface of the sea). the sea). These energies are used mostly to produce electricity. Hydro power exploits the power of water through dams or small power stations on streams. The force of the water activates a turbine that drives an alternator and generates electricity. Biomass can be used to heat (wood, heat from waste incineration plants), produce biogas (methanisation) that will be burned to produce heat and / or electricity, produce biofuels, chemistry.
