Led's are incredibly efficient for lighting. I use strings or Rope lights to light my house.
but your question kind of implies that you have no power. for that I would have to go with candles of some kind, really big candles burn very slowly so might be what you need.
Location: Western Washington
posted 5 years ago
Nah, I've got power. I, just curious what things are actually most efficient without all the externalities. I can see LEDs being way more better than CFL or other light bulbs because of how much less stuff they use. Its like just a wire in a tiny blog of glass.