Johnson says that the 2007 plan anticipated 6GW of wind would be connected to its system over 20 years, but more than half that much has come on line in four years.
Wind sector enraged by BPA's forced shutdowns
A major legal battle is brewing as the Bonne-ville Power Administration (BPA) implements a policy to deal with overgeneration, costing US Northwest wind-power producers at least $742,000 in the past two weeks.
26 May 2011 22:00 GMT
Updated
25 November 2012 16:01 GMT
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