Although EET-mediated synthetic schemes showed the lower thermionic efficiency rather than H2- mediated hybrid photosynthesis in the situation where variables were kept at standard levels but may benefit from being able to practicably be concentrated in a comparatively smaller cross-sectional area at a comparatively small cost in thermionic efficiencies. Also, the results indicated that fine-tuning the thermodynamics and improving kinetics in each module could pave a way to reduce the losses of efficiency, as all schemes seem to have the potential to exceed natural photosynthesis.