roblem is IGCC isn't there yet.It costs about 20 percent more than traditional plants.And even though it's easier to collect the resulting carbon dioxide from an IGCC plant than a traditional plant, there's no proven way to get rid of the.One plan is to drill a shaft to pump the carbon dioxide underground, into saltwater formations.But there's no guarantee it will remain underground forever.
NRG think solving the IGCC riddles is worth the trouble because they expect the U.S.will soon limit the amount of carbon dioxide that power generators may ."With the additional cost of IGCC, to just voluntarily build something that's 20 percent more expensive, that’s commercial suicide," NRG chief administrator, David Crane said.
NRG
expect the cost to decline after six or seven plants are built.But other industry experts think it will take about a dozen plants for the price to be competitive with traditional coal plants.Takaya Watanabe, a vice general manager of Mitsubishi, admits that the cost challenges are difficult.“It’s good for a company to say we want to be green, but unless someone is willing to pay, it's a dream.It won't keep our faily eating rice," he said.
64.What is expected of the new technology?
A.To make electricity without polluting the air.
B.To produce energy without burning coal.
C.To keep the use of electricity cheaper.
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