A solar-to-hydrogen efficiency above 10 per cent has been reached in testing at Sparc Hydrogen's laboratories.

Solar-to-hydrogen efficiency measures how much of the energy in sunlight a device converts into hydrogen. Reaching double digits is a milestone for technologies that split water directly with sunlight. Developer SunHydrogen announced the breakthrough and a technology collaboration with Sparc Hydrogen where the two companies will test whether SunHydrogen's modules can be integrated into Sparc Hydrogen's reactors to lower the cost of producing hydrogen.

If agreed milestones are met, moves to on-sun testing at Sparc Hydrogen's SHARP pilot facility at Roseworthy in South Australia. Those results will feed a jointly funded study of the all-in cost to produce one kilogramme of hydrogen.

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