Energies generated from solar, wind, water and waves are clean and
add minute or no amount of greenhouse gases and hence are termed as clean energy also called renewable energy as they can be used again and again. Climate
change and global warming along with emission of humongous amount of
greenhouse gases and increase in oil prices are all directing more towards the
use of renewable energy.
Wind Energy: Wind energy can be used for production of electricity.
Wind mills and wind turbines are built to harness energy of the wind to make
electricity. Preferred location for wind farms is areas with stronger wind flow
or at high altitude places.
Solar Energy: Energy from the sun has many applications. It’s
beneficial for both humans and plants. For plants they convert solar energy to
chemical energy by the process of photosynthesis and in case of humans, sun’s
energy striking on solar panels gets the energy converted with generation of
electricity. Another use of solar energy is its use as solar cooker. Instead of
conventional method, solar cooking uses sunlight for cooking and its cheap and
Hydropower: Flowing rivers or streams, waves and tides helps in
production of mechanical energy. This is used for electricity generation and
accounts for single renewable energy source for electricity generation in the
United States and the largest contributor among all the renewable energy
sources and accounts for 6.7% of worldwide electricity production.
Renewable energy being cheap and more efficient its use is
increasing day by day and if properly used then it may give us a hope of having
a world free of greenhouse gas. This Climate
Change 2019 will give us new techniques, ideas as to how utilize
these renewable energies more efficiently.