%0 Report %K Energy Markets and Policy Department %K Energy Analysis and Environmental Impacts Division %A Tom Hoff %A Carl Lenox %A Nicholas Miller %A Yih-huei Wan %A Ray George %A Joshua Stein %A Benjamin Kroposki %A Andrew D Mills %A Mark Ahlstrom %A Michael Brower %A Abraham Ellis %C Berkeley %D 2009 %I LBNL %P 18 %T Understanding Variability and Uncertainty of Photovoltaics for Integration with the Electric Power System %2 LBNL-2855E %8 12/2009