The efficiency of DC hydrogen production is about 1%-2% higher than that of AC coupled hydrogen production.

LV transmission is suitable for power stations and hydrogen plants and other scenes, with small and medium power, relatively mature technology. 

DC coupling hydrogen production

After MV transmission tens of kilometers, DC hydrogen production power supply is used to power the electrolyzer.

MV  transmission technology is difficult and immature. Its main difficulties are DC solid-state switching technology, DC system protection technology, isolated DC/DC cascade converter technology;