Turkey is the third-largest lignite producer in the world,[1] with 7% of total production.

[3] TKİ is on the Global Coal Exit List compiled by the NGO Urgewald (in German) [de].

[5]: 34 TKI's annual capital expenditure was ₺198 million (US$57 million) per year between 2016 and 2017.,[6] and the largest lignite mine in Turkey is Afşin-Elbistan.

[7] TKİ had been profitable but made losses in 2016 and 2017,[8] and in 2021 the Court of Accounts criticised TKİ for losses which could continue for decades.

[9] Ventilation air from some mines such as Soma Eynez, contains significant methane; in 2019 studies were being done on how to capture it.