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2008 Dec 24 - Solar Power Plant: Alternative Sources Of Energy For Growing Cities
Alternative Power Plants
McCoy Alternative Power Reports tracks data about every electric power
plant worldwide using alternative fuels. Founded in 2007 and sister
company of McCoy Power Reports, McCoy Alternative Power Reports (MAPR)
collects data about every alternative energy power plant in the world
through information collected from trade publications, periodicals, press
releases, and surveys submitted by equipment manufacturers.
Although we
are currently focused on the wind energy database and reports, MAPR with
the support of MPR, also offers reports for Hydro, Solar, Geothermal,
Municipal Solid Waste, Coffee Grounds, and Biomass electric power plants
that produce 5MW or more of electricity." Biomass currently includes:
agricultural waste, sewer sludge, wood, wood chips, bark, paper, paper
sludge, waste sugar cane, bagasse, peat, rice hulls, chicken litter,
straw, and waste tires.
As the leading producer of power reports, we offer:
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An independent voice.
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A commitment to follow data through the life cycle of every
alternative electric power plant in the world.
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Multiple data points so purchasers of the raw data can take the
database and manipulate it and customize it to meet their needs.
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Basic bottoms up approach so that market share numbers can be
verified."
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Continually updated database with needs and feedback of our
customers in mind.
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Affordable reports because we have low overhead.
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Focused 100% on our database and our reports to bring our customers
the most accurate and useful information.
Solar Power Plant: Alternative
Sources Of Energy For Growing Cities
Many huge cities spouted
around the world in the past several years. These mega cities often
require tremendous amount of energy to sustain its industries and
households. In most cases, the source of energy of these mega cities is
fossil fuels. Everyday, tremendous amounts of fossil fuels are burned in
these areas. Since burning of fossil fuel can have great impact to the
environment, many scientist and environmentalists strongly recommends the
use of solar power plants as alternative sources of energy.
As a form of renewable resource, sunlight is considered as a cheap source
of energy for the planet. Solar power plants can convert the heat of the
sun into electricity. According to experts, the process of converting the
sunlight into electricity is simple and very cost efficient. Yes, the
initial investment required by a solar power plant may be quite high
considering the number of solar panels and the amount space needed to set
up these solar panels but the good news is that after the initial
investment on, the solar power plant will now require minimal maintenance.
Note that solar panels are usually made of modular and easily available
and affordable materials, making it quite easy for the power plant owners
to easily replace damaged solar panels. Moreover, the solar power plant is
self-sufficient. As long as it can capture enough sunlight, you do not
need any fuel inputs to generate energy. Furthermore, since the solar
panels are built to last for a long time, you will have enough time to
recover your initial investments on the solar power plant.
Solar power harnesses the suns heat and light emissions. It is the power
we get from converting the suns energy. The energy of the sun is abundant,
clean, and environmentally friendly. Every day, we receive more energy
from the sun than the entire world could use in 27 years! solar power is
highly renewable, as the energy from the sun is estimated to last another
4.5 billion years.
The basic difference between
generation of solar power and the conventional power is:
Solar power doesn't need large, polluting power stations * Solar power can
be generated at home and in industries * Once installed, there is no
further need of any raw materials to generate solar power
Converting the Suns Energy
There are many different ways of converting the suns energy, in the form
of light, into electricity. Photovoltaic cells, more commonly known as
solar cells, are made of semi-conductors. These energy converters convert
the energy in sunlight into electricity. Sunlight, which is a stream of
energy particles–photons–falls on the semi-conductors or the conductors
and transfers its energy to them. The photons transfer their energy as
they hit the silicon atoms in the solar cells, thereby releasing the
electrons from their orbit around the nucleus, generating electricity.
To help concentrate the sunlight on a small area of photovoltaic cells,
Fresnel lenses, mirrors, and mirrored dishes are used as concentrators. A
Fresnel lens consists of concentric rings of segmental lenses with a short
focal length. Multiple solar cells are combined to make a solar panel. For
protection of these solar cells, glass, with an anti-reflective coating,
is used as a cover. Solar panels usually produce 12 or 24 volts of DC
power.
Boiling Fluids - Mirrors or reflective surfaces are used to concentrate
the suns energy onto a fluid reservoir. This leads to steam generation by
boiling the fluid, which in turn spins a turbine to generate electricity.
Using a turbine to generate electricity is similar to the conventional way
of power generation, except that solar energy is used in place of
non-renewable fossil fuels. Either DC or AC electric power can be
generated using turbines.
Heat Engine - The heat engine, the most common one being a Stirling
engine, has a gas- enclosed compartment. Through mirrors or reflective
surfaces, the sunlight is concentrated on the engine, which heats the gas.
This causes a piston to move, which runs the generator. The gas gets
cooled and returns to go through the heating cycle again. These heat
engines are silent. Depending on the generator, they can produce either DC
or AC current.
How Hydropower
Plants Work
Worldwide, hydropower plants produce about 24 percent of the world's
electricity and supply more than 1 billion people with power. The world's
hydropower plants output a combined total of 675,000 megawatts, the energy
equivalent of 3.6 billion barrels of oil, according to the National
Renewable Energy Laboratory. There are more than 2,000 hydropower plants
operating in the United States, making hydropower the country's largest
renewable energy source.
In this article, we'll take a look at how falling water creates energy and
learn about the hydrologic cycle that creates the water flow essential for
hydropower. You will also get a glimpse at one unique application of
hydropower that may affect your daily life.
The Power of Water
Simple Beginnings
Use of hydropower peaked in the mid-20th century, but the idea of using
water for power generation goes back thousands of years. A hydropower
plant is basically an oversized water wheel.
More than 2,000 years ago, the Greeks are said to have used a water wheel
for grinding wheat into flour. These ancient water wheels are like the
turbines of today, spinning as a stream of water hits the blades. The
gears of the wheel ground the wheat into flour.
When watching a river roll by, it's hard to imagine the force it's
carrying. If you have ever been white-water rafting, then you've felt a
small part of the river's power. White-water rapids are created as a
river, carrying a large amount of water downhill, bottlenecks through a
narrow passageway. As the river is forced through this opening, its flow
quickens. Floods are another example of how much force a tremendous volume
of water can have.
Hydropower plants harness water's energy and use simple mechanics to
convert that energy into electricity. Hydropower plants are actually based
on a rather simple concept -- water flowing through a dam turns a turbine,
which turns a generator.
Here are the basic components of a conventional hydropower plant:

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Dam - Most hydropower plants
rely on a dam that holds back water, creating a large reservoir. Often,
this reservoir is used as a recreational lake, such as Lake Roosevelt at
the Grand Coulee Dam in Washington State.
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Intake - Gates on the dam
open and gravity pulls the water through the penstock, a pipeline that
leads to the turbine. Water builds up pressure as it flows through this
pipe.
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Turbine - The water strikes
and turns the large blades of a turbine, which is attached to a
generator above it by way of a shaft. The most common type of turbine
for hydropower plants is the Francis Turbine, which looks like a big
disc with curved blades. A turbine can weigh as much as 172 tons and
turn at a rate of 90 revolutions per minute (rpm), according to the
Foundation for Water & Energy Education (FWEE).
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Generators - As the turbine
blades turn, so do a series of magnets inside the generator. Giant
magnets rotate past copper coils, producing alternating current (AC) by
moving electrons. (You'll learn more about how the generator works
later.)
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Transformer - The transformer
inside the powerhouse takes the AC and converts it to higher-voltage
current.
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Power lines - Out of every
power plant come four wires: the three phases of power being produced
simultaneously plus a neutral or ground common to all three. (Read How
Power Distribution Grids Work to learn more about power line
transmission.)
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Outflow - Used water is
carried through pipelines, called tailraces, and re-enters the river
downstream.
SAPP is against dirty coal ...more
Coal's Assault on Human Health
Coal pollutants affect all major body organ systems and contribute to four
of the five leading causes of mortality in the U.S.: heart disease,
cancer, stroke, and chronic lower respiratory diseases. This conclusion
emerges from our reassessment of the widely recognized health threats from
coal. Each step of the coal lifecycle-mining, transportation, washing,
combustion, and disposing of post combustion wastes-impacts human health.
Coal combustion in particular contributes to diseases affecting large
portions of the U.S. population, including asthma, lung cancer, heart
disease, and stroke, compounding the major public health challenges of our
time. It interferes with lung development, increases the risk of heart
attacks, and compromises intellectual capacity.
Oxidative stress and inflammation are indicated as possible mechanisms in
the exacerbation and development of many of the diseases under review. In
addition, the report addresses another, less widely recognized health
threat from coal: the contribution of coal combustion to global warming,
and the current and predicted health effects of global warming...more
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Aug 26, 2010 -
Are nepotism and corruption behind the Sabah coal plant?
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Aug 21, 2010 -
Build more gas power plants as soon as possible
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Aug 19, 2010 -
Coal plant DEIA rejected
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Aug 18, 2010 -
SAPP vows to scrap controversial dams and coal plant proposals
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Jul 29, 2010 -
EIA report on controversial coal plant flawed
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Jul 27, 2010 -
Sabah coal-fired plant 'far from eco-friendly'
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Jul 23, 2010 -
British environmentalist leads fight against Sabah coal plant
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Jul 17, 2010 -
Hundreds gather at site for proposed coal-plant
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Jul 17, 2010 -
MP calls govt's bluff over coal power
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Jul 16, 2010 -
Chua urges protection of biodiversity in Sabah
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Jul 06, 2010 -
Green Surf wants coal plant scrapped
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Jun 15, 2010 -
Parliament to debate Sabah's coal power
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May 18, 2010 -
Sabah says
No to coal!
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Apr 21, 2010 -
Sabah, a dumping ground for dirty coal
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Dec 15, 2009 -
Chua:
Q&A on power plants at parliament
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Dec 15, 2009 -
Commitment an irony, claims SAPP
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Dec 01, 2009 -
Chua: Terms
of reference on EIA
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Nov 29, 2009 -
Groups
express concern over report on coal-fired plant
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Nov, 27, 2009 -
How
important is Bakun power to Peninsular Malaysia?
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Nov 25, 2009 -
BN
flip flops again!
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Nov 18, 2009 -
Melanie engages in verbal spat over coal plant
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Nov 17, 2009 -
Sabah's
Objection to the building of Coal Power Plant
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Nov 16, 2009 -
Sabah
assembly: Coal-fired plant against green policy
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Nov 15, 2009 -
SAPP:
Coal plant idea not supported by public
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Nov 13, 2009 -
China eyes
closing coal-fired power plants in capital
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Nov 13, 2009 -
Dirty
Coal Power
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Nov 9, 2009 -
SAPP: Coal
power plant at Tungku tainted with power abuse
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Nov 9, 2009 -
China eyes
closing coal-fired power plants in capital
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Oct 27, 2009 -
Power from
West-East Coast Grid only by end 2013
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Oct 21, 2009 -
Ulterior
motive on the coal fired power plant
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Oct 19, 2009 -
Power entity
should be under state gov't
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Sep 13, 2009 -
Chua: Extend
National Energy Commission to Sabah
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Aug 19, 2009 -
People's
cries falling on deaf ears
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Aug 16, 2009 -
Stop holding
the people to ransom over power supply problem
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Aug 12, 2009 -
Enough! Stop Power Disruptions in Tawau
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Jul 30, 2009 -
National Green Technology Policy the way forward for renewable energy
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Jun 24, 2009 -
Birth
defects in China's Shanxi show human price of coal
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Jun 23, 2009 -
SAPP
to Raymond: Don't insult Sandakan folks
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Jun 17, 2009 -
WWF
opposes coal plant wherever sited in Sabah
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May 30, 2009 -
SAPP Yes
to gas-powered but No to coal-fired plant
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May 26, 2009 -
Sabah
discriminated by BN government
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May 18, 2009 -
Sapp
says no to coal-fired plant again
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Apr 30, 2009 -
Supply
Sarawak power to Sabah and not Indonesia or Brunei
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Feb 19, 2009 -
SAPP
welcomes assurance, calls for gas-powered plant for Sandakan
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Feb 18, 2009 -
SAPP
to continue its campaign against coal plant
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Feb 17, 2009 -
Tennessee Coal spill and destruction
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Feb 16, 2009 -
SAPP's
objection of coal-fired plants in Sabah
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Feb 15, 2009 -
Yong
shows up at anti-coal protest
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Dec 24, 2008 -
Alternative Power Plants
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Dec 24, 2008 -
Economic reasons over Health and Environmental concerns
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Nov 13, 2008 -
Scrap
coal-fired plant in Sekong
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Oct 07, 2008 - Don't
force the coal plant on Sandakan
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Nov 06, 2000 -
Tenaga eyeing renewable energy - Blowing Hot Air or Talking Bull?
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State's sovereign rights on oil ....
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Jul 01, 2010:
Questions on Blocks L & M not fully answered
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Jun 25, 2010:
Murky oil blocks deal could cost Sabah billions of ringgit
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Jun 11, 2010:
Is Maritime District 14 a Malaysian maritime territory?
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Jun 07, 2010:
Edward: People deserve to know what happened
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May 12, 2010:
Dullie to Mojigoh: Who are you helping?
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May 12, 2010:
Be honest about oil blocks, Kitingan tells govt
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May 10, 2010:
SAPP: The
fact speaks for itself
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May 05, 2010:
SAPP news in FreeMalaysiaToday
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May 05, 2010:
Malaysians only found out via NYSE: Yong
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May 04, 2010:
Sabah rights and interests have been sacrificed
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May 04, 2010:
Oil blocks deal: Huge financial loss to Sabah
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May 03, 2010:
SAPP: Ceding of blocks L and M to Brunei unconstitutional
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May 02, 2010:
Najib: M'sia, Brunei border talks will lead to a win-win solution
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Apr 30, 2010:
Statement by Tun Abdullah Ahmad Badawi on two oil exploration fields
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Apr 30, 2010:
Abdullah says cabinet approved boundary pact with Brunei
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Apr 30, 2010:
Pak Lah gave 'RM320b oil rich areas' to Brunei
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Apr 29, 2010:
Malaysia's generosity by Dr Mahathir
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Nov 23, 2008:
Oil royalty:
SAPP not giving up
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Nov 20, 2008:
Oil
Royalty Warrants Review
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Stop the Coal-fired Power Plant in Sandakan....
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Destruction of famous tourist attraction sites
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Sepilok Orang Utan Rehabilitation Centre
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Kinabatangan Ramsar Site, Sukau Resorts
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Island Resorts off Sandakan, Selingan Turtle
Island...
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Issues
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Sabah's Oil Royalty
Oil Royalty Warrants Review
- Kota Kinabalu (20 November 2008): State Government has been urged to
initiate a review of the 1976 Petroleum Agreement between the State and
Federal Government with the view to revise the oil royalty from five
percent to no less than 20 per cent.
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Issues affecting Sabah
on..
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