Green energy transportation system and transportation method using green hydrogen

A green energy transportation method comprising:

• a power generation step that generates and stores electricity using renewable energy;
• a water electrolysis step that generates hydrogen by electrolyzing water using the electricity obtained in the power generation step;
• a methane synthesis step that generates methane through a Sabatier reaction using the hydrogen generated by the water electrolysis step and recycled CO2 as raw materials;
• a methane transportation step that transports the methane generated in the methane synthesis step to a hydrogen energy consumption site by using a means that does not emit CO2 to the atmosphere;
• a hydrogen production and carbon capture step that produces hydrogen and carbon monoxide by an autothermal reforming method, which is a process that generates a synthesis gas containing hydrogen and carbon monoxide by sequentially causing a partial oxidation reaction of methane and a steam reforming reaction to occur in a reactor using the methane transported by the methane transportation step and oxygen prepared separately as raw materials and that recovers high concentration CO2 as recycled CO2 from a process gas produced during the hydrogen production;
• and
• a CO2 transportation step that transports the recycled CO2 to a methane synthesis site where the methane synthesis step is carried out by using a means that does not emit CO2 to the atmosphere;
• wherein the method further comprises an oxygen transportation step that transports the separately prepared oxygen generated by the water electrolysis step to the hydrogen energy consumption site by using a means that does not emit CO2 to the atmosphere.