Lots of big power users have their own power plants, with the grid as backup. This is especially good if there's someone nearby who can use the waste heat from

Lots of big power users have their own power plants, with the grid as backup. This is especially good if there's someone nearby who can use the waste heat from the power plant. Looks like the melting point of pure silicon is high enough that it's way above the temperature of the power plant's waste heat.