The Orhaneli Mine supplies lignite to the 210 MW Orhaneli Thermal Power Plant. In addition, the mine supplies lignite to the local populace for domestic purposes. The mine started production in 1979. About 1986 and 1987 the major equipment was purchased to produce the current production levels. However, the Power Plant did not reach full capacity until 1997 after the installation of Flue Gas Desulfurization units. The production for the past five years is as follows:
The mining license for the operation of the Orhaneli Mine covers 9143.88 hectares or about 22,600 acres. The license is intersected in the middle of the Gumuspinar mine area by a private license. The lignite field is divided into three areas, namely Gumuspinar, Sagirlar and Civili. All mining is in the Gumuspinar area, which is about 5 kilometers long and 1 kilometer wide.