Faced with power shortfalls, demands for greener energy and drought threats to hydropower, a growing range of African nations are considering a shift to an unexpected power source — nuclear energy.

South Africa has the continent's only commercial nuclear power plant. But according to the International Atomic Energy Agency, a third of the almost 30 countries around the world considering adopting nuclear power are in Africa.

Ghana, Kenya, Egypt, Morocco, Niger, Nigeria and Sudan have engaged with the IAEA to assess their readiness to embark on a nuclear program, and Algeria, Tunisia, Uganda and Zambia are mulling the possibility, according to the agency.