Intermittency may be the Achilles Heel of solar energy. Since the Sun doesn't always shine and utility-scale energy storage isn't available yet, grid operators have to rely on dispatchable generation like natural gas or coal when clouds cover up solar farms. But that may be about to change in a big way.Solar panel with clouds image via ShutterstockThe National Center for Atmospheric Research (NCAR) has launched an ambitious three-year national ...
http://cleantechnica.com/2013/02/28/solar-energy-forecasts-could-boost
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