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Green Planet Weekly

Renewable equals Revivable

enewable energies have been

used for 4 millenniums years,

when the Chinese first used

wind power to pump water for their

crops, or by sailor to sail the oceans. It

has been recognized for millenniums, but

its popularity and usage have not been so

popular and even got replaced by fossil

fuels, which are finite resources. Every

form of energy is finite, but renewable

energies are energies that can

replenished rapidly or even instantly.

Some day in the future, perhaps a few

more centuries, fossil fuels are going to

run out, but the renewable energy will

still be there. Therefore, renewable

energy is definitely the most important

for the development of human kind.

There are a lot of types of

renewable energy; a lot of them originate

from the natural world. For instance,

they can be sunlight, wind, biomass, etc.

The most popular type of renewableenergy is wind energy. It has been used

for thousands of years by sailors and by

many civilizations for many purposes.

Human kind has used wind to do variety

of jobs, such as windmills, irrigation

pumping, and recently, wind turbines to

create electricity. Wind power generating

rate has recently increasing by 30 percent

each year. Wind power and other typesof renewable energy have been providing

about 16 percent of the worlds

electricity and are still increasing

dramatically.

Renewable energy sources have

brought us many advantages. Unlike

finite energy sources, alternative energy

sources are sustainable, so they never run

out. Renewable energy facilities also

require less maintenance than traditional

generators. In addition, the fuel used by

the facilities is originated from nature

which reduces the operation cost. And

even more important, renewable energy

R

November 28th, 2011

Green planet weekly

Author: Dang Pham

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Greenplanetweekly|11/28/2011

produces very little or even no waste. As

a result, it produces very little or even no

waste. So, renewable energy not only

gives us an unlimited amount of

resources but also a solution for globalwarming.

We can recognize many

advantages and benefits from alternative

energy sources but we must also be

aware of its negatives. One big

disadvantage it brought to us is that it is

very difficult for us to produce as much

energy as the traditional burning fossil

fuel. This means that we have to reduce

our energy usage if we want to benefit

from renewable energys advantages.

Another challenge that renewable energy

have is that the availability of the

supplies. Alternative energy often relies

on the weather for its production. Wind

turbines need wind, solar panels need the

sun but when these sources are

unavailable, renewable energy faces

many problems. Imagine a volcanic

eruption that covers the sky with dust

that will limit our production of solar

energy. This is very inconsistent. Also,

the current cost of renewable technology

is very high comparing to the traditional

fossil fuel generation.

The advances of technology really

help us to improve to reduce the

disadvantages and step over the obstacle.

The power of renewable energy is far

beyond of any human kind imagination,

if we fully utilize the immense power of

alternative energy. I believe one day, the

usage of renewable energy will be

exploiting more than the traditional finite

energy sources.