The new vessel, which is called Osman Khan has a 450-megawatt capacity.
It is expected to replace the current 225 megawatts barge which was delivered in November 2015 and docked at the Tema Fishing Harbour.
The arrival of the second Karpowership is part of the agreement signed in the Power Purchase Agreement which was signed with the Electricity Company of Ghana (ECG).
The agreement requires Karpowership Ghana Company Limited to provide a total of 450MW capacity and directly feed it into the national grid for 10 years.
The second Karpowership will also be connected to the national grid. Both the barge and the vessel will work simultaneously for about a month.
Experts envisage that the vessel would be well stabilized before the 225mg barge is decommissioned and moved out of Ghana.
The operations of 470 MW Karadeniz Powership Osman Khan is expected to provide a better quality of power in the country which will subsequently help grow the economy.