How big are the energy savings worldwide if everyone uses LED instead of regular lamps?

Question

How big are the energy savings worldwide if everyone uses LED instead of regular lamps?

In: 4

Answer 1

There’s about 8 billion lightbulbs according to Google. If we assume each uses 40wh, that’s ~50 mil megawatt hours per day. Assuming LEDs are using only a fifth of that energy, that’s a 40mil megawatt hours / day reduction.

That number doesn’t mean much I suppose, but if you think that the whole world spends 100 bucks per day on powering regular bulbs, switching would change that to 20 bucks per day.