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There are various energy carriers for CO2 global recycling system. Here selected two major syn-fuels, a CO2-methanol, and a CO2- LN aiming at both CO2 depression, and utilization of remote new energy resource (CO2 =C source). The calorific capacity[cal/mol-CO2] of CH4 is superior that of CH3OH. However, the CH4-system involves much energy consuming process (liquefction and LNC tanker). In the viewpoint of energy consumption of total system, CO2-methanol system is available ingeneral. However the CO2-LNG system becomes also hopeful on the local condition such as gas field near a desert. Because there is a coexistence of a rich solar energy and LNG-infra system, additionally often in the case of CO2-rich natural gas field.