The Principal Solar Institute Publishes White Paper Outlining Industry’s First and Only Independent Ratings System for Creating, Testing, Monitoring Solar PV Modules

  FOR IMMEDIATE RELEASE   The Principal Solar Institute Publishes White Paper Outlining Industry’s First and Only Independent Ratings System for Creating, Testing, Monitoring Solar PV Modules Dallas, TX – November 13, 2012 — Principal Solar, Inc (PSI; OTC Pink: PSWW), a publicly traded solar energy holding company executing a unique roll-up strategy to create …

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