First Solar's quarterly sales rise on higher solar panel demand | Reuters Exclusive news, data and analytics for financial market professionalsLearn more aboutRefinitiv Companies Follow April 30 (Reuters) - First Solar(FSLR.O), opens new tab, the biggest U.S.-based solar panel maker, on Thursday reported higher quarterly sales that met Wall Street expectations, helped by demand from third parties and from India. U.S. tariffs and stricter trade enforcement that raised the cost of imported solar panels have s ...