And plants powered by gas emit far less carbon dioxide than those powered by dirty coal.

如果用天然气发电，它比用煤发电排放的二气化碳量要少很多。

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A carbon floor price, announced in late 2010, makes dirty coal-generation more expensive.

2010年底宣布的碳最低保证价，使煤电生产成本更高。

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Elderly nuclear power stations and dirty coal plants must be shut down over the next five years.

陈旧的核电厂和脏乱的煤发电厂在未来五年必须关闭。

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They seem to believe we can replace those dirty coal plants with solar and wind power.

FORBES: How Many Politicians Are Needed To Screw Up A Light Bulb?

The government will also introduce an Emissions Performance Standard, designed to prevent the construction of new, dirty coal plants.

BBC: Energy bill to boost cleaner energy production

As small heat-and-power units spread to homes and offices, the inefficiency of dirty coal-fired power plants would be exposed.

ECONOMIST: Stepping on the gas