Christian Roselund has a strategy for when a new solar tariff petition drops. Turn off your phone. Then get to reading. Had he failed to follow these rules in April, Roselund, a senior policy analyst at Clean Energy Associates, would have gotten an ear full from developers fearful of yet another tariff fight.U.S. solar manufacturing giants First Solar and QCells are putting their weight behind the latest threat to an already fragile supply chain, and it could be much worse than the one that b...