While it might seem that the obvious solution is to expand electricity grids, in recent years more environmentally sustainable and immediately accessible alternatives have emerged. Chief among them is the solar-powered light emitting diode (LED) lamp.
"When we started out 15 years ago, there were no scalable solutions -- large energy-hungry fluorescent bulbs required large, expensive solar panels and complicated installation" says Mills. "Now, LEDs the size of a cherry can generate light 100 times brighter than a kerosene lamp at a very low wattage, while solar cells have become much more efficient."
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