Some quotes:
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More recently, the economic recession in 2008 and 2009 caused a significant drop in electricity demand. As a result, the lower demand projected for the near term in the AEO2011 Reference case again results in excess generating capacity. Capacity that is currently under construction is completed in the Reference case, but only a limited amount of additional capacity is built through 2025. In 2025, capacity growth and demand growth are in balance again, and they grow at similar rates through 2035.
...geothermal resources triples as a result of technology advances that make previously marginal sites attractive for development, as well as increasing the resources available at existing geothermal sites.---
...generation from biomass more than triples from 2009 to 2035, when it accounts for 39 percent of total nonhydroelectric renewable electricity generation.
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Because the Federal PTC expires at the end of 2012, however, 73 percent of the overall increase in wind capacity (18.2 gigawatts) occurs between 2009 and 2012. From 2012 through 2035, only an additional 6.9 gigawatts of wind capacity is added.
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