Carbon Capture is Key to Fight Emissions Rise - Pwc
LONDON - Burying carbon dioxide
(CO2) underground will be vital to keep greenhouse gases at safe
levels, given projected rapid emissions growth in developing countries,
accountants PriceWaterhouseCoopers (PwC) said in a report.
China's economy has grown at
more than 10 percent a year in the past three years, and according to
PwC projections it could overtake the United States in size of economy
by 2016 and in carbon emissions by 2010.
Similar growth in India, Brazil, Russia, Indonesia and
elsewhere risks endangering a goal to avoid dangerous global warming,
which the European Union and some scientists put at 2 degrees Celsius
or more, the PwC economics report said on Friday.
Carbon capture and storage (CCS) is a barely tested
technology that involves burying the commonest greenhouse gas, CO2,
underground. But it is essential to curb emissions in the long run, the
report said.
"CCS is necessary to be on path to stabilisation at 450
parts per million," said the report's author, PwC's UK head of
macroeconomics John Hawksworth, referring to the atmospheric CO2 level
that some scientists match to a 2 degrees rise.
CCS is seen especially applicable to China and its huge
reserves of highly-polluting coal, because of the option to split coal
into CO2 and hydrogen and bury the CO2.
PwC estimated that CO2 emissions would fall by 17
percent by 2050 using both CCS and other clean energy technologies, but
would rise by 4 percent without CCS.
Climate scientists have previously estimated to Reuters
that a 16 percent cut by 2050 would still have a roughly two-thirds
chance of exceeding 2 degrees.
CCS is still at a demonstration stage, adding urgency to development of the technology, Hawksworth said.
"There's no room for delay to be ready to roll it out on a large scale by 2025."
Given this time gap, in the meantime the world will need
to apply energy efficiency technologies in power plants, cars, houses,
and appliances, to keep pollution under control.
Besides CCS, clean energy sources like renewables will
be necessary to achieve the further necessary emissions cuts to 2050.
Story Date: 29/9/2006
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