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"Calif., Hawaii, Arizona, Maryland and Delaware come out tops in new rankings that examine the financial profitability of residential solar from state to state."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mnn.com/your-home/at-home/blogs/solar-gain-5-states-where-pv-panels-can-earn-homeowners-extra-green?hpt=hp_bn18>