The Turkish Energy Market Regulatory Authority, EMRA, gave fines totaling 224.4 million Turkish liras (about $84 million) to energy companies in the first half of 2015, according to the official data from the energy watchdog.
With 174 million Turkish liras (about $66 million), the oil sector was the largest subject of fines on 444 separate cases, the data show.
EMRA fined the oil companies for the purchase of diesel from unlicensed suppliers and selling sub-standard diesel, which did not contain the adequate level of national marker that indicates the prescribed quality.
The liquid petroleum gas, LPG, sector was given 65 fines worth 24.8 million Turkish liras ($9 million).
In the electricity sector, 28 companies were fined a total of 24.9 million Turkish liras ($9 million).
With 439,582 Turkish liras ($164,879), the natural gas sector received the least amount of fines.
EMRA gave fines totaling 639 million Turkish liras (about $234 million) to energy companies in 2014.
By Muhsin Baris Tiryakioglu