The 2008 forecast for clean energy cost how 'far'?

Solar photovoltaic webex: British climate change expert committee in 2008 for offshore wind, onshore wind, nuclear power and other low-carbon energy sources by 2020 has made the forecast (the cost of power generation Didn't do to pv cost forecast, because experts feel that pv is not counting on) 。 If the 2008 forecast and the actual cost to do a comparison of the results (as shown Constant prices for 2012 pounds) :

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'photovoltaic (pv) of the world' this is a comprehensive system to introduce photovoltaic summary of past, present and future of the development of corpus, wide-ranging, and can meet the needs of different readers. This paper not only includes editor Wolfgang & middot; Dr Parr, herself, in its new energy career of more than 50 years, the deep understanding of the development of photovoltaic (pv) and system summary, also include the global photovoltaic industry professionals engaged in new energy or a review of the photovoltaic difficult development,

into people line of sight of the electric car safety accidents frequently, power battery seems to be accountable. So, what are the problems behind the deep? To solve range anxiety to win more market and consumers, and how to keep security clearance?