Moreover, the poor quality of power supply from the grid (network surges, frequent interruptions) may prevent use of the advanced electronic controls that come with many imported technologies. Compa energy generation accounts for up to 20 percent of installed capacity in Nigeria and 6 percent across sub-Saharan Africa (Steinbuks and Foster 2010). Private generating facilities are costly to establish, operate and maintain, and they drain capital that could go to more productive investments (Okafor 2008, Steinbuks and Foster 2010).