Why are solar lights so dependable?
A17: Because each light has its own power plant–a solar generator is energized by the sun. The generator is guaranteed for twenty years-which keeps an ultra reliable battery charged to de- liver lighting power whenever it is needed. There is some charging every day, even when it is cloudy.Solar lights don’t depend on faraway generating stations, high voltage transmission li- nes and switches, substations, transformers, and wires or cables. Though these are very reli- able on average, the failure of any one of these elements will extinguish hundreds and som- etimes thousands of lights all at once, often at times when they are vital, like in hurricanes or snow storms and ommunities are plunged into darkness.
