The data shows that investment in solar far outstripped that in wind, and that US clean energy investment moved ahead of China for the first time since 2008.

The data also revealed that 2011 saw the one trillionth dollar invested in clean energy globally since Bloomberg New Energy Finance started compiling data in 2004.

Other 2011 highlights include a 36 per cent surge in total investment in solar technology, to $136.6 billion. This was nearly double the $74.9 billion investment in wind power, which was down 17 per cent on the previous year.

Bloomberg New Energy Finance Chief Executive Michael Liebreich said: “The performance of solar is even more remarkable when you consider that the price of photovoltaic modules fell by close to 50 per cent during 2011, and now stands 75 per cent lower than three years ago, in mid‐2008.

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"The cost of PV technology has fallen, but the volume of PV sold has increased by a much greater factor as it approached competitiveness with other sources of power.”