Currently, 1.7 billion people worldwide are without electricity. The problem is most acute in Sub-Saharan Africa where over 500 million people presently lack modern energy, with rural electricity access rates as low as 2%.
Among the poorest of the poor, lighting is often the most expensive item among their energy uses, typically accounting for 10-15% of total household income. Yet, while consuming a large share of scarce income, fuel based lighting provides little in return.
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