You can replace an acetylene torch with gas electric arc welding and cutting. It is done, but is currently more expensive (not a whole lot mind you). The probl

You can replace an acetylene torch with gas electric arc welding and cutting. It is done, but is currently more expensive (not a whole lot mind you). The problem is not manufacturing but mostly smelting and refining. (Including recycling) You need huge sustained and peak energy input for that, renewables do not deliver it.