Typical Combined cycle block sizes offered by three major manufacturers (Alstom, General Electric and Siemens) are roughly in the range of 50 MW to 500 MW and costs are about $600/kW.

http://en.wikipedia.org/wiki/Combined_cycle
At $600/KW we have $600,000/MW and that translates to 600,000 X 160 [naira to dollar exchange rate]
to give 96,000,000 A.K.A. N96M.
When we consider the fact that the power plants of size 50 - 500 MW benefit from Combined Cycle Technology and most power plant built by the FG fall well with this range, the real fraud becomes clear.

The turbines used in Combined Cycle Plants are commonly fueled with natural gas.

http://en.wikipedia.org/wiki/Combined_cycle#Fuel_for_combined_cycle_power_plants

They include the Ihovbor Power Station, Benin in Edo State, with capacity of 4 x 125mw, Calabar Power Station in Cross River State, with capacity of 5 x 125mw, Egbema Power Station in Imo State, with capacity of 3 x 125mw, Gbarain Power Station in Yenagoa, Bayelsa State, with capacity of 2 x 125mw, and Sapele Power Station in Delta State, with the capacity of 4 x 125mw.

https://www.nairaland.com/1474680/gov-fashola-spends-n400-million#18749060