Over the last decade renewable energy, or energy recycling, has taken on a whole new light. Although the technology has existed for years, it is becoming more main stream both commercially and residentially. The main streams are wind power, hydropower, solar energy, geothermal energy, biofuel, and biomass.
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2. Renewable energy is energy
that comes from natural
resources such as sunlight,
wind, plants, etc.
There is an unlimited supply
and this energy form can be
used repeatedly
3. Wind Power
Use wind turbines to harness the power
Wind turbines have output of 1.5-3 MW
Potential of wind energy is 5 times current
energy production
Hydropower
Also known as hydroelectricity
Energy from water
Water is 300 times denser than air
Forms include micro hydro and run-of-river
hydroelectricity
4. Solar Energy
Also known as solar power and solar thermal
energy
Most common form of renewable energy
Results from solar radiation
Characterized as active and passive
Biomass
Plant material
Plants harness the power during
photosynthesis
Energy is released when the plants are burnt
5. Biofuel
Derived from plants
An variation is biodiesel which is made from
vegetable oils, animal fats, or recycled
greases
Used to power vehicles or added to diesel
Geothermal Energy
Thermal energy is contained in the earths
core
Stored at about 4,000 miles inside earth’s
core
Hot springs are heated by geothermal energy