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"The U.S. Energy Department said $10 million in cash was available to teams that can develop solar systems for $1 per watt."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Business_News/Energy-Industry/2012/09/13/US-aims-to-encourage-cheap-solar-power/UPI-49551347538399/>