How good and how soon is still unclear.
Solar Closing in on "Practical" Hydrogen Production
Researchers develop a solar tech that splits water into hydrogen and oxygen with record efficiency
By Mark Anderson in IEEE
Israeli and Italian scientists have developed a renewable energy technology that converts solar energy to hydrogen fuel — and it’s reportedly at the threshold of “practical” viability.
The new solar tech would offer a sustainable way to turn water and sunlight into storable energy for fuel cells, whether that stored power feeds into the electrical grid or goes to fuel-cell powered trucks, trains, cars, ships, planes or industrial processes.
Think of this research as a sort of artificial photosynthesis, said Lilac Amirav, associate professor of chemistry at the Technion — Israel Institute of Technology in Haifa. (If it could be scaled up, the technology could eventually be the basis of “solar factories” in which arrays of solar collectors split water into stores of hydrogen fuel——as well as, for reasons discussed below, one or more other industrial chemicals.) .... "
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