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On the Rise: Solar Thermal Power and the Fight Against Global Warming
05/08/2008
On-The-Rise.pdf
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Executive Summary
Global warming is real, is happening now, and is largely
caused by human activities. To prevent the worst impacts of global warming, the
United States
must take action to reduce global warming pollution quickly and dramatically.
Electricity generation accounts for more than a third of America’s emissions of global
warming pollution. Preventing catastrophic global warming, therefore, will
require the United States
to shift away from highly polluting sources of power, such as coal-fired power
plants, and toward clean, renewable energy.
Concentrating solar power (CSP) technologies – which use the
sun’s heat to generate electricity – can make a large contribution toward
reducing global warming pollution in the United States, and do so quickly and
at a reasonable cost. CSP can also reduce other environmental impacts of
electric power production, while sparking economic development and creating
jobs.
The United States
has limited time to transition away from dirty energy sources and toward clean,
renewable energy.
·
The latest climate science tells us that the United States
and the world must reduce emissions of global warming pollutants quickly and
dramatically to prevent the most catastrophic impacts of global warming.
o
Should global average temperatures to increase
by more than 2° Celsius, scientists warn that dangerous impacts from global
warming will become inevitable, including flooding of coastal cities, the loss
of large numbers of plant and animal species, and increases in extreme weather,
wildfire and drought.
o
To have a reasonable chance of preventing a 2° C
increase in global average temperatures, the world must keep the concentration
of global warming pollution in the atmosphere below 450 parts per million.
o
The United States must, at minimum,
reduce its greenhouse gas emissions by 15-20 percent from 2000 levels by 2020,
and by 80 percent by 2050 to prevent catastrophic impacts from global warming.
Other nations must act aggressively as well.
·
America’s
electric power plants produce more carbon dioxide (the leading global warming
pollutant) than the entire economy of
any nation in the world other than China.
·
Even if America uses energy efficiency
improvements to prevent future growth in electricity consumption, the nation
will still need to expand its renewable generating capacity dramatically.
Reducing carbon dioxide emissions from power plants to 20 percent below 2000
levels by 2020, for example, would require the U.S. to generate 15 to 24 percent
of its electricity from new renewable sources – or between 158 GW and 257 GW of
new renewable energy by 2020. The need for clean energy will further accelerate
in future decades as the United
States seeks to meet increasingly stringent
targets for emission reductions.
Concentrating solar
power is ready to reduce global warming pollution, and can begin doing so right
away.
·
America
has immense potential to generate power from the sun. The National Renewable
Energy Laboratory has identified the potential for more than 7,000 gigawatts
(GW) of solar thermal power generation on lands in the southwestern United States – more than six times current U.S.
electric generating capacity. Other
sunny areas of the United States,
such as the mountain West, the Great Plains and Florida, can also generate power from solar
thermal energy.
·
Solar thermal power plants covering a 100 mile
by 100 mile area of the Southwest – equivalent to 9 percent the size of Nevada – could generate
enough electricity to power the entire nation.
·
Building just 80 GW of CSP capacity – a target
that is achievable by 2030 with sufficient public policy support – would
produce enough electricity to power approximately 25 million homes and reduce
carbon dioxide emissions from U.S. electric power plants by 6.6 percent
compared to year 2000 levels. Solar thermal power can make even greater
contributions in the years to come – precisely the time when the nation must
achieve deep cuts in global warming pollution.
·
CSP plants are increasingly cost-competitive
with other power generation technologies that do not produce carbon dioxide.
The cost of energy from solar thermal power plants is estimated to be
approximately 14 to 16 cents/kWh – competitive in cost with theoretical
coal-fired power plants that capture and store their carbon dioxide emissions and
with new nuclear power plants.
·
CSP development has accelerated dramatically
since the beginning of 2007. More than 2,800 MW of solar thermal projects are
in some phase of development nationwide and could be completed by 2012.
CSP benefits the
environment and America’s
economy.
·
CSP power is clean. Its only necessary emission,
water vapor, is harmless. By developing CSP, America can avoid the need for
coal-fired power plants – which emit health-threatening mercury, particulate
matter, and smog-forming pollutants and consume large quantities of water – and
nuclear power plants, which consume large amounts of water and produce
radioactive waste.
·
CSP can play a leading role in the electric
power system. Unlike intermittent forms of renewable energy, CSP plants with
thermal energy storage can deliver power when it is needed to serve demand. CSP
plants can be designed to provide either peak or baseload power, enabling them
to address a variety of needs within the electric grid.
·
Solar thermal plants create permanent jobs for
local economies. Construction of 80 GW of CSP power has the potential to
generate between 75,000 and 140,000 permanent, green jobs for Americans.
·
CSP and other forms of renewable energy reduce
demand for natural gas, thereby reducing prices. Installing 4 GW of CSP in California could save
Californians between $60 million and $240 million per year in the cost of
natural gas.
·
America’s
vast potential for CSP could one day produce renewable electricity to be used
in vehicles – thereby reducing the nation’s dependence on oil.
Strong public
policies can increase the use of CSP in the United States. Priority actions
include:
·
Enacting a national
Renewable Electricity Standard (RES) that requires 25 percent of all U.S.
electricity to come from renewable resources – and a certain percentage from
solar power technologies – by 2025.
States should also enact RES policies or expand their existing RES targets.
·
Expanding and extending the Renewable Electricity Investment Tax Credit can give CSP project
developers the financial certainty they need to move forward.
·
Enacting
caps on global warming pollution at both the national and state levels,
which will encourage the development of clean, low-carbon energy sources like
concentrating solar power and encourage the retirement of America’s dirtiest
electric power plants. Money raised by auctioning allowances under a
cap-and-trade system should help support renewable energy development and
reduce the cost of the program to consumers.
·
Creating
feed-in tariffs for renewable energy sources, which provide financial
rewards to generators who feed renewable energy into the power grid. Widely
used in Europe, feed-in tariffs aim to move
renewable energy to non-subsidized cost competition with conventional energy,
creating fair markets between new and traditional electricity sources.
·
Providing
access to transmission for CSP, in particular through western regional
policy agreements and initiatives, can ensure that solar power can be delivered
to power consumers. New transmission lines should be built to renewable
resource areas before they are built to traditional power generators and be
sited and designed to minimize environmental impacts. The federal government
should also fund existing research and development on a high-voltage direct
current transmission backbone.
·
Creating an annual $3 billion fund for research, development, and
deployment of renewable energy for 2009, which can ensure that CSP and
other renewable energy technologies are available to meet America’s energy and climate
challenges. The fund should be renewed for the next 10 years, committing $30
billion over the next decade. These dollars should come from shifting funds
away from coal, oil, gas and nuclear power subsidies.
Carbon dioxide equivalent.
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