In the first six months of 2011, Vulcan reported a loss of RON15.4 million.
Vulcan said its first-half sales doubled more than doubled to RON47 million, from RON21.2 million in January-June 2011.
Overall revenue also doubled on the year to RON69.9 million, while total costs increased 18% to RON58.8 million.
Vulcan is 74.8% owned by Grupul Energetic Tender SA Bucuresti, a company controlled by businessman Ovidiu Tender.
Monday, Vulcan closed down 4.55% at RON0.42 a share in Bucharest. (EUR1=RON4.4924)