LED supply from 230V AC
How many LEDs can I supply from my home power supply?


A typical home in the US or Europe might have a 24 kW supply. (e.g. 120 V x 200 A or 240 V x 100 A)

A small 5mm 2V LED can visibly illuminate at 10 mA. That's 20 mW

24000 / 0.020 = 1200000

Therefore you could have billions of LEDs but only 1.2 million could be illuminated concurrently. You could perhaps increase this number with PWM if brightness isn't too much of an issue.

This assumes no power losses in the conversion and drivers. I'd apply a rule of thumb power-loss factor before placing an order for 1000000 LEDs.

Don't try this in summer.