Renewable Energy

Renewable energy is useful energy that is collected from renewable resources, which are naturally replenished on a human timescale, including carbon-neutral sources like sunlight, wind, rain, tides, waves, and geothermal heat. The term often also encompasses biomass as well, whose carbon neutral status is under debate. This type of energy source stands in contrast to fossil fuels, which are being used far more quickly than they are being replenished.

Renewable energy often provides energy in four important areas: electricity generation, air and water heating/cooling, transportation, and rural (off-grid) energy services.

Wind Power is a type of renewable energy that is harnessed by using a windmill or a wind turbine. A windmill or a wind turbine uses wind to turn its blades. Because of the blades turning, a generator/motor´s wire is coiled rapidly, creating heat and in turn, energy or electricity. Using wind power and/or a windmill has its benefits. According to globalwindday.org, a windmill can produce up to 7 MW (MegaWatt).

Geothermal energy is the thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. The geothermal energy of the Earth's crust originates from the original formation of the planet and from radioactive decay of materials (in currently uncertain^, but possibly roughly equal proportions). The adjective geothermal originates from the Greek roots γῆ (gê), meaning Earth, and θερμός (thermós), meaning hot.

Earth's internal heat is thermal energy generated from radioactive decay and continual heat loss from Earth's formation. Temperatures at the core–mantle boundary may reach over 4000 °C (7200 °F). The high temperature and pressure in Earth's interior cause some rock to melt and the solid mantle to behave plastically, resulting in parts of the mantle convecting upward since it is lighter than the surrounding rock. Rock and water are heated in the crust, sometimes up to 370 °C (700 °F).

Solar power is the conversion of energy from light to electricity. Either using photovoltaics(PV) indirectly using concentrated solar power, or a combination. Concentrated solar power systems use lenses or mirrors and solar tracking systems to focus a large area of sunlight on a small beam. Photovoltaics cells covert light into an electric current using the photovoltaics effect. A source of solar power is solar panels.