The reason why stuff like this (electrolysis, desalination, etc.) is not widely done is that the capital cost of the facilities is too high. If you spend a bunc

The reason why stuff like this (electrolysis, desalination, etc.) is not widely done is that the capital cost of the facilities is too high. If you spend a bunch of money on an electrolysis plant and only run it 10% of the time, you'll never make your money back, even if your electricity is free.