- PG&EhadpreviouslysignedapowerpurchaseagreementwithBrightSourceinApril2008for500megawattswithanoptiontobuyanother400megawatts.Twelvemilesofsolarreflectorsgenerateabout300megawatts,aminisculeamount.Ghanahopesthatgarbagealonecangenerate50megawattsofelec...
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