There is speculation that the Grand Inga Dam can produce enough electricity for the whole continent. That was true before the 1990s. The continent has annual economic and population growth respectively of 5% and 2.5%. In 2005, electricity usage was 600 kWh per capita for the 910 million Africans. The region with chronic power shortages is Sub Saharan Africa (South Africa excluded), where production was only 250 kWh per capita for 700 million people. An African average of at least 1000 kWh per capita requires a total continental production of more than 1000 TWh p.a. / 120 GW. This is equivalent to three times the maximum capacity of Grand Inga Dam. The world average per capita was 3044 kWh in 2012 (The World Bank: 2014 The Little Data Book).