Renewable energies

Renewable energy is energy which comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable.

Mainstream forms of renewable energy are:

Wind power: Airflows can be used to run wind turbines. Areas where winds are stronger and more constant, such as offshore and high altitude sites, are the best places for wind farms. Typical capacity factors are 20-40%.

Hydropower: Energy in water can be harnessed and used. Since water is about 800 times denser than air, even a slow flowing stream of water, or moderate sea swell, can provide amounts of energy. There are many forms of water energy: Micro hydro, hydroelectric, ocean energy…

Solar energy: Solar energy is the energy from the sun in the form of solar radiation.

Biomass: Liquid biofuel is usually either bioalcohol such as bioethanol or an oil such as biodiesel. Bioethanol is an alcohol made by fermenting the sugar components of plant materials. Biodiesel is made from vegetable oils, animal fats or recycled greases. Biodiesel can be used as a fuel for vehicles.

Geothermal energy: Geothermal energy is energy obtained by tapping the heat of the earth itself, both from kilometers deep into the Earth's crust or from shallow depths, as in geothermal heat pumps.

In my opinion this is a high innovation to improve the convenctional energies because these type of energies are much better than the others because they are cleaner. Even though they are more expensive than the tradicional ones.