THTH for SnO2 reduction decreases with the reduction in the PO2PO2 in the inert carrier gas. Re-oxidation of SnO via water splitting reaction is feasible below 875 K (at 1 bar). Q̇solar-cycle increases by 342.62 kW due to the increase in the THTH from 1780 to 2380 K. Q̇solar-cycle decreases by 18.32 kW due to the increase in the TLTL from 400 to 800 K. ηcycle=41.17%ηcycle=41.17% and ηsolar-to-fuel=49.61%ηsolar-to-fuel=49.61% can be achieved with 50% HR.