The Energy Bulletin referenced a Wired Online article that reported that there is a shortage of silicon for photovoltaic systems. If demand for solar cells grows at the rate that the solar industry forecasts, shortages could cause the solar industry to have difficulty in finding the raw materials to meet their needs this year. The semiconductor manufactures are willing to pay a higher price for silicon than the solar industry. According to the article, silicon manufacturers cannot justify the capital investment for new production facilities at the price solar manufacturers are willing to pay for their products. If federal and state governments would establish subsidies for solar energy, the silicon industry would be more inclined to make large-scale investments, an industry spokesman said. It takes 3 years to get a new silicon facility on line, so tight supplies could continue for several years.
So we have yet another roadblock to expanding our renewable energy supplies. It is a good thing that solar cells are not really a economical source of energy at this time, except where they are highly subsidized or where there is no source of less expensive power. California is considering funding to encourage installation of solar panels on 1 million rooftops by 2018.
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Posted by: tom walkman | March 24, 2007 at 03:41 AM