(ADPnews) - May 13, 2011 - Bulgarian renewable energy firm Solarpro Holding, a spin-off of mineral extracting and processing company Kaolin, ended the first quarter of 2011 with a net profit of BGN 2.63 million (USD 1.9m/EUR 1.3m), recovering from a loss of BGN 413,000 in the full 2010, the company said.