Over the course of its life, a 100 watt, 1 square meter solar panel will produce about 10,000 kilowatt hours of electricity.

This is an induction furnace, by far the most energy demanding component in solar panel assembly, used to produce the silicone boules that solar panels are made of.

It uses 15 kilowatt hours per hour. One furnace can produce several boules per day, and each boule can produce several panels worth of photovalic material for use in solar panels. A furnace uses only a tiny fraction of the power the panel will produce over its lifetime.