Although several types of renewable energy have been with us since a long time, we probably did not have the right tools for harnessing them for practical purposes. For instance, the sun and the wind as also the foliage and plant life (biomass) are no newfound discoveries but people never imagined that sunlight could help create electricity through photovoltaic cells. Similarly, wind as a renewable energy was mainly used by sailing ships or was employed to run windmills for grinding corn. Today the same wind is employed to generate electricity in average homesteads.
there are quite a few types of renewable energies
available, Hydropower seems to be the single largest
source of such energies. It provides almost 11% of
Geothermal energy is also considered to be another useful renewable energy. It is produced from naturally occurring hot water or steam (as from the Old Faithful in the Yellowstone National Park in USA) emanating from under the earth’s surface and is responsible for 2,800 megawatt of energy in the US. As a matter of fact, steam is employed to rotate a turbine that is coupled to a generator that generates electricity.
now let us come to wind as a form of renewable energy
that is currently sweeping the
from two isolated issues that related to early
generation of electricity through wind power; one
involving Prof. James Blyth of
Yet another ground-breaking invention uses solar energy (renewable energy) to produce electricity. The photovoltaic cells absorb sunlight, release their electrons from the atoms, as a result of which electricity is produced. Several PV cells are arranged in the form of a panel (called Solar Panel) to generate reasonable amount of power.
Nevertheless, researchers are busy finding out newer methods of harnessing the world’s renewable energies that are clean, unpolluted and are available free of cost all through the years.
Wind power being a safe and clean energy is a great idea. And now the good news is, you can build your own wind power system at home. There are several reasons for wanting to do this – while on the one hand you can contribute to clean up the air, on the other, you can drastically cut down on your power bills. However to make this happen, you will have to know a few things such as where to set it up in your home so that it will work, how to set it up, how to complete the wiring, where to get the parts from cheaply and also the safety precautions.