All of us use energy every day – for entertainment, cooking, transportation, lighting, heating
and cooling homes, manufacturing, etc. We consume a lot of energy. The United States
consumes about one fourth of the world’s energy resources.
When energy is produced from non-renewable fuels, to heat our homes or power our cars for
example, pollutants are released into the air contaminating the air we breathe and water too.
The more energy we use or miles we drive in our cars, the more energy power plants must
produce or gasoline our cars burn, releasing more pollutants into the air. (Conservation)
The term renewable energy is used to describe a source of energy or power that has the
capacity to replenish itself. Renewable energy or renewable power is by definition, renewable,
such that this source of power can replenish itself over and over again. Renewable energy
can sometimes be called infinite energy, because it relies on energy that is in infinite supply.
Finite energy sources are known as non-renewable energy sources, as they rely on supplies
and reserves of which there is a fixed quantity.
Renewable energy is also considered clean energy, because it does not produce toxins or
pollutants that are harmful to the environment in the same manner that non-renewable energy
does. Thus, renewable energy is also known as green or clean energy. Much of the world
today is converting to renewable energy sources as a means of providing power to homes
and businesses in order to function more environmentally friendly. The most commonly used
types of renewable energy today are wind power, solar power, and hydroelectric power.
Wind power is the most common form of renewable energy. Here, electricity is generated by
blades turning turbines which run a generator. Wind power has a potentially infinite energy
supply and a number of advantages to its use. Wind is a free commodity and is in infinite
supply and thus an affordable renewable energy source. Further, generating wind does not
produce toxins or pollutants to the environment and thus assists in the fight against global
Solar power is another renewable energy source, where the energy from the sun is
harnessed in order to produce energy. Because the sun is the sun, heat and energy found in
sunlight is in limitless supply so long as the sun is shining, and thus is an excellent renewable
energy source. Some areas of the world can not rely on solar power because their weather
and climate are not conducive to its use if long periods of cloudiness are present. Overall
however, solar power is a clean energy source that does not pollute the environment or
contribute to global warming, and as such, it is a widely used source of renewable energy.
Hydroelectric power is now gaining in popularity when it comes to serving as a renewable