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Some environmentalists are skeptical of the technology, and of the idea of clean coal in general. ... Donald Brown at liberal think tank Climate Progress.
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Of course, people like him, who represent more ideologically than scientifically motivated organizations, are skeptical. Would be nice to hear from an actual environmental or energy scientist for the skeptic's perspective, rather than an environmental lawyer speaking on behalf of a left-wing interest group ("Climate Progress" is part of the Center for American Progress).
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Yet the federal Department of Energy believes that the process can create 20 megawatts to 50 megawatts by 2020, said Jared Ciferno, the agency’s director of coal and power-production research and development, in a statement.
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On the flip side, though, for a note of skepticism, I would note that total US power generation is measured in terawatts. So before getting too hopeful I would be curious to know how much more it would cost to develop this capacity which would amount to about a millionth of US needs in 2020 (maybe less - math is hard).
I have the same skepticism regarding environmentalists who sing the praises of alternative energy like wind and solar without admitting that the only currently viable alternative energy capable of the amount of power generation needed to supplant fossile fuels is nuclear power.