As part of the process, the government issued certificates of ownership to buyers of the PHCN generating and firms on 30 September 2013.
The country received more than $2.5bn from investors.
International Finance Corporation (IFC) country manager Solomon Adegbie-Quaynor was quoted by businessdayonline.com as saying, "It is a historic day for Nigeria as the private investors takes over the assets. It is probably the most important step in the privatisation process."
"We at IFC are committed to supporting the power privatisation and we will engage with the private and public sector stakeholders to make sure that the environment can support further investment," Adegbie-Quaynor added.