RE:RE:This does not sound 'major'... Using targeted microwaves to add heat for the methane & water to react and turn into hydrogen is a fairly good idea. It will use a large amount of power at scale..
The methane reformers need to heat the methane in tubes to 900 Celsius. There's a lot of waste heat. Some of it gets used to produce useful steam but still a lot of wasted heat. If one could use a highly efficient cogen facility with cO2 capture for power and/or solar/wind then the microwaves would be some of the lowest emission h2 on the block.