Replace "extremely cheap" with "zero cost" and you've got it correct. Texas at night is an endless sea of flare stacks. We burn off an unbelievable amount of natural gas just to get rid of it.

I've often wondered how this is lawful under the EPA. Obviously it must be, but it seems like a gross oversight to allow people to just burn natural gas and allow its byproducts to escape into the atmosphere yet not get any useful work out of it.