> The applications can be any process which converts electricity into another usable form of energy. You’re ignoring capital costs. Try to think of all the thi

> The applications can be any process which converts electricity into another usable form of energy. You’re ignoring capital costs. Try to think of all the things you know what consume electricity and compare the price of that thing to the cost of the electricity it consumes. Specifically, free electricity is only useful if the cost of electricity is a high percentage of the cost of the machine that consumes it. E.g. building a $10M machine that normally consumes $100k worth of electricity in its lifetime doesn’t make sense just because the electricity becomes free (or even priced at negative $100k). You’d still be spending 99% on the machine itself, thus saving — at most — 1% due to cheaper electricity.