The partial provisional acceptance of Unit No. 4 having 29.00 MWm / 28.65 MWe installed capacity has been realized in the Upper Kaleköy Project, which is preparing to become the largest hydroelectric power plant by installed capacity operated by the private sector in Turkey.

The partial acceptance was carried out with the participation of a committee consisting of representatives from the Ministry of Energy and Natural Resources, TEİAŞ South East Anatolia Load Dispatch Operation Directorate and TEİAŞ 13ᵗʰ Regional Directorate. The acceptance report was signed on 26 April 2018.