A methane or methanol producing system is proposed in which laser beams are generated in space by excitation of sunlight, transmitted onto land or sea without {HEAD ~ loss} to obtain {TAIL ~ optical energy} with high efficiency, and irradiated on a hydrogen producing device to produce industrially inexpensive hydrogen with high efficiency, thereby producing methane or methanol 
A methane or methanol producing system is proposed in which laser beams are generated in space by excitation of sunlight , transmitted onto land or sea without { HEAD ~ loss } to obtain { TAIL ~ optical energy } with high efficiency , and irradiated on a hydrogen producing device to produce industrially inexpensive hydrogen with high efficiency , thereby producing methane or methanol
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