Being more general than senectus1, Fertilizer is huge market, explosives and ordnance is (sadly) a huge market, synthetic fuels (eg: methanol for container ship

Being more general than senectus1, Fertilizer is huge market, explosives and ordnance is (sadly) a huge market, synthetic fuels (eg: methanol for container ships) is a huge market - all of these are growing rapidly and looking for non traditional sources (eg: Hydrogen with much lower methane and trad fossil fuel miced in, "green hydrogen" from solar, etc.).