According to New Energy Finance, onshore wind energy needs a carbon price of $38, offshore of $136 and solar cells of $196.

新能源金融所研究表明：陆上风里发电需要碳价38美元，海上风力发电需136美元，太阳能电池板需196美元。

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In the short term, that means rolling out proven technologies such as onshore and offshore wind power, solar photovoltaics and energy efficiency measures.

就眼前来说，这意味着推广成熟的技术，如陆地或海上风力发电、太阳能光电和能源效率措施。

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Other proposals to ensure Britain hits its EU target of generating 15% of its energy from renewable sources by 2020 are the building of 3, 500 onshore wind turbines.

为保证英国在2020年达到欧盟的从可再生资源里提供15%能源的目标，其他提议包括在海岸上建造3500座风力涡轮发电机。

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Meeting Britain's energy needs from onshore wind power would require covering literally the entire country in turbines, even assuming that the wind was guaranteed to blow.

ECONOMIST: What to do?

In the past, all technologies were subsidised equally, so most investment went into onshore wind, the cheapest source of renewable energy.

ECONOMIST: Renewable energy

However, he said the UK needed to move to cleaner energy and stressed there was an economic case for onshore wind.

BBC: Wind farm