VANCOUVER - Icelandic geothermal company HS Orka hf has reported a big turnaround in net earnings in the first half of 2011, majority owner Alterra Power Corp. (TSX:AXY) said Friday.Alterra said HS Orka posted net income for the first six months of of US$ 6.5 million, compared with a loss of US$ 18.7 million in the same, half-year period in 2010 … [Read more...]