[1] The plant has an installed capacity of 972 MW and is capable of generating 2,500 GWh of electricity annually.
[3] The station was built in 1964 with an installed capacity of 2X36MW or 72MW from two Stal-Laval gas turbines and began operations in 1966.
Then the station was called Delta I under the Electricity Corporation of Nigeria (ECN), a precursor to the Nigerian Electric Power Authority (NEPA) and its successor, the Power Holding Company of Nigeria (PHCN).
In 1975, six units of General Electric (GE) Frame 5 gas turbines (20MW each) were installed in the station known as Delta II, after the merger of Niger Dam Authority (NDA), Kainji, and the ECN to form the National Electric Power Authority (NEPA).
Delta IV control system was also upgraded to Mark V by GE of USA which built the station.