Global Power Synergy Plc (GPSC), the power generation arm of national energy firm PTT Plc, took over four firms yesterday operating nine solar farms in Thailand with total capacity of 39.5 megawatts. Chawalit Tippawanich, president and chief executive of GPSC, said the company took over the firms through its wholly owned Global Renewable Power Co (GRP), acquiring shares in GNPS Star Group Co, World X Change Asia Co, PP Solar Co and Terra Form Operating Thailand Co.