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Chapter 5 • Sustainable Solar Energy Collection and Storage 85
FIGURE 5.3 Regions of sub-Saharan Africa.
the population by 2050 [13]. decreasing infant mortality rates and increasing fertility
rates have resulted in a high under-24 population, and by 2035 the number of working
aged Africans (18–64) is expected to exceed that in the rest of the world combined [14].
Currently, the average population density in SSA is approximately 40 people per square
kilometer, although the total range across countries is quite high: Namibia has only 2.5
people per square kilometer while Mauritius has 639 people per square kilometer (Fig. 5.4)
[14]. Assuming a community with more than 90 000 inhabitants qualifies as ‘urban’,
approximately 37% of SSA is considered to be living in urban areas. SSA has the world’s
