| There are many energy sources today that
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| | produce power. This is the most reliable
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| are extremely limited in supply. Some of
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| | of all the renewable energy sources. On
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| these sources include oil, natural gas,
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| | the down side, it affects ecology and
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| and coal. It is a matter of time before
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| | causes downstream problems. The decay of
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| they will be exhausted.
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| | vegetation along the riverbed can cause
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| Estimates are that they can only meet our
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| | the buildup of methane. Methane is a
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| energy demands for another fifty to
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| | contributing gas to greenhouse effect.
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| seventy years. So in an effort to find
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| | Dams can also alter the natural river
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| alternative forms of energy, the world
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| | flow and affect wildlife. Colder, oxygen
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| has turned to renewable energy sources as
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| | poor water can be released into the
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| the solution. There are many advantages
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| | river, killing fish. And the release of
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| and disadvantages to this.
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| | water from the dam can cause flooding.
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| Renewable energy sources consist of
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| | Geothermal energy uses steam from the
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| solar, hydro, wind, geothermal, ocean and
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| | Earth's ground to generate power. It uses
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| biomass. The most common advantage of
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| | smaller land areas than other power
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| each is that they are renewable and
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| | plants. They can run 24 hours per day,
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| cannot be depleted. They are a clean
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| | every day of the year. Disadvantages are
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| energy, as they don't pollute the air,
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| | that it is very site specific and, along
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| and they don't contribute to global
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| | with the heat from the Earth, it can also
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| warming or greenhouse effects. Since
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| | bring up toxic chemicals when obtaining
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| their sources are natural the cost of
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| | the steam. Drilling geothermal reservoirs
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| operations is reduced and they also
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| | and finding them can be an expensive
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| require less maintenance on their plants.
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| | task.
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| A common disadvantage to all is that it
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| | Biomass electricity is produced through
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| is difficult to produce the large
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| | the energies from wood, agricultural and
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| quantities of electricity their
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| | municipal waste. It helps save on
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| counterpart the fossil fuels are able to.
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| | landfill waste but transportation can be
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| Since they are also new technologies, the
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| | expensive and ecological diversity of
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| cost of initiating them is high.
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| | land may be affected. In addition, its
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| Solar energy makes use of the sun's
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| | process needs to be made simpler.
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| energy. It is advantageous because the
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| | Ocean energy is a clean and abundant
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| systems can fit into existing buildings
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| | energy form. It does, however, have high
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| and it does not affect land use. But
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| | costs. Ocean thermal energy also requires
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| since the area of the collectors is
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| | close to a forty degree Fahrenheit
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| large, more materials are required. Solar
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| | difference in water temperature year
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| radiation is also controlled by
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| | round. In addition, construction and
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| geography. And it is limited to daytime
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| | laying pipes can cause damage to the
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| hours and non-cloudy days.
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| | ecosystem.
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| Wind energy uses the power of the wind to
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| | There are many advantages to the use of
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| produce electricity. Although it is the
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| | renewable energy sources. There are also
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| largest job producer, it is reliant on
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| | some disadvantages. The fact is energy
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| strong winds. Wind turbines are large
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| | demands will continue to increase.
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| and, although you can use the area under
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| | Through research and development, as well
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| them for farming, many consider them
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| | as, new technologies, the hope is many of
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| unattractive looking. They are also very
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| | the disadvantages of renewable sources of
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| noisy to operate. In addition, they
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| | energy can be eliminated and we can
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| threaten the wild bird population.
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| | successfully incorporate it into our
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| Hydroelectric energy uses water to
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| | power supplies.
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