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Title: The Popular Types of Renewable Energy
Author: Rick Chapo
Article:
One can't go far these days without discussions of energy issues
arising. Renewable energy sources are part of that discussion,
but what exactly are the types available?
Renewable energy is somewhat of a catch all phrase. It refers
not to one energy production method, but to many types that have
one thing in common. They all use an energy resource that is
freely available and does not run out per se. Let's take a look.
Solar Energy - Solar energy is considered a renewable energy
source because it uses the power of the sun to produce
electricity and heat. Since the sun isn't going to burn out any
time soon, it is a free power resource for the next four or five
billion years.
Wind Power - Wind power is actually a type of solar power. Wind
is produced when the sun heats of different surface areas at
different rates. The air over hotter surfaces rises and cooler
air rushes in to fill the gap. This is wind. As long as the sun
is shining, we will have wind. We can harness wind for
electrical production through turbines. The wind turns the
blades of the turbines, which crank a generator that puts out
electricity. Wind power is currently the fastest growing
renewable energy platform in the United States.
Hydropower - Hydropower is electricity generated by damming a
river. Turbines are built into the dam. Much like wind power,
water flows down through the dam because of gravity and spins
the turbine fans as it passes. This cranks a generator, which
produces electricity. Hydropower currently accounts for 10
percent of the electricity production in the US, but is losing
popularity as building dams is very expensive.
Biopower - The great hope of President Bush, biopower is based
on the idea of using organic material to produce fuel for cars,
heating and so on. It is better than using fossil fuels, but has
some serious disadvantages. Ethanol, for instance, can help
replace gasoline, but it produces a ton of smog. Processing
organic materials also takes nearly as much energy as it
produces in the form of fuel and such. All and all, this is one
of the weaker renewable energy resources.
Geothermal - This renewable resource works by capturing the
steaming water temperatures in the earth's crust. If
temperatures reach 240 degrees, the inherent energy can be
converted to electricity. Geothermal is a great idea with
limited application. The problem? It is not readily available.
In the United States, only California, Hawaii, Nevada and Utah
can support geothermal plants.
Renewable energy is definitely the wave of the future. Sooner or
later, we are going to have to convert to these energy
platforms. With huge oil companies buying up solar and wind
power companies, it looks like the future may be sooner than we
think.
About the author:
Rick Chapo is with SolarCompanies.com - providiing information
on <a
href="http://www.solarcompanies.com/renewable_energy">renewable
energy</a>.
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