Brent crude futures dropped about, or 0.75%, to trade at $45.12 a barrel by 05.37 am GMT.
Brent crude held most of it gains from the previous trading session.
About $600 million has been invested by the African Development Bank (AfDB) in Africa for the development of renewable energy in the continent.
The Russian Federation has disclosed plans to enhance bilateral co-operation between with Nigeria to develop the latter's energy sector.
Nigeria and others have secured $20 million investment in the Metier Sustainable Capital International Fund II from AfDB.
The Council of Ministers of APPO has been urged by President Muhammadu Buhari to support the $1 billion recapitalisation of the AEICORP.