What is renable source of energy?

Answer 1

There are four generally-accepted forms of renewable energy; these are resources that are not used up in producing power for human consumption. Please keep in mind that "renewable energy" and "alternative fuels" are not the same thing, even though they are sometimes used interchangeably. Biodiesel or nuclear power, for example, are alternative, as they are not included in traditional fossil fuels. However, they are used up (slowly in the case of nuclear), and are not strictly "renewable".

Solar power: Uses dark-colored panels to collect the heat and light energy in sunlight. Solar panels can be arranged in large farms, or in smaller installations on homes. Many streetlights now run on small solar panels, and some hikers even use portable solar panels to charge their electronics.

Wind power: Uses the wind to turn wind turbines. Windmills have been around for centuries, but using turbines for electrical power is a relatively new practice.

Water power, or Hydroelectric: uses the energy in moving water to drive turbines. Hydroelectric plants are most often contained in dams, but sometimes take the form of wave motion generators, placed on bridge pylons or piers, where currents generate power. In the past, many mills were powered by a more primitive hydro system: the waterwheel.

Geothermal: From Geo-, meaning "earth" and thermal, meaning "heat" or "energy", geothermal power generation utilizes a shaft drilled deep into the earth to gather heat generated by the movement of Earth's crust. In much the same way that burning coal is used to boil water, which in turn pushes a turbine, the Earth's natural heat is used to power turbines which produce electricity.

Answer 2

Renewable sources of energy are resources that can be replenished naturally, such as sunlight, wind, and water. These sources are sustainable and do not deplete the Earth's Natural Resources. Using renewable energy can help reduce greenhouse gas emissions and combat climate change.