H2 from Cyanobacteria

Solar biohydrogen uses our most abundant energy source (126,000 TW of
solar power reaches the Earth’s surface) to produce hydrogen, the fuel
with the highest specific energy.Photosynthetic bacteria can harvest
this solar energy and convert it into hydrogen, a clean and sustainable
fuel source.We are using genetic and metabolic engineering approaches
to improve the H2 production efficiency from Synechocystis PCC 6803.
Some of the current challenges to photobiological H2 production include
oxygen sensitivity of the enzyme, preferential energy consumption by
other metabolic pathways, and heat tolerance.

Photosystem