California regulators approved an expansion of a subsidy for rooftop solar power generated by homeowners and businesses. The plan, adopted by the California Public Utilities Commission, allows more homeowners and businesses that install their own solar-power systems to sell unused power to their utility. The "net energy metering" program requires utilities to buy the power.
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Links:
[1] http://www.scpr.org/blogs/environment/2012/05/24/6303/cpuc-approval-net-energy-meeting-boosts-solar-indu/