Between 2004 and 2010 annual global investment in renewable energy, energy efficiency and associated technologies soared from just over US$ 50 billion to about US$ 250 billion. Clean energy technologies also became cheaper – most notably solar photovoltaics, but also wind turbines, LEDs, batteries and all the associated control technologies – so that each dollar of investment started to buy a lot more equipment.
Recently, however, progress has stalled, and 2012 was the first year in which investment globally dropped, by 11%. Yet it would need to increase to between US$ 750 billion and US$ 1 trillion a year if energy-related carbon emissions are to peak by 2020.
See full Article: http://forumblog.org/2013/02/biased-against-clean-investment/
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