[rockinqsranch]

Not being a chemist sort I’m wondering about the costs of the oxygen to liberate the hydrogen.

[LesbianThespianGymnasticMidget]

Around 5% of the H2 produced then powers the oxygen production plant, so the system more than pays for itself.

---

If true it is just the capital for the plant, but that is a big if.

Plants don’t look outlandish. https://www.alibaba.com/showroom/oxygen-plant-cost.html

[Jonty30]

There is a net loss, but it is a reality that energy production is a subsidized activity in the world to make the modern world possible and not send us back to the Stone age.

Thus could help lead to quenching the thirst of the deserts of the world and make the world bloom.

[willyd]

What about adding the water vapor to the atmosphere when the hydrogen burns? Water vapor is 70 times worse than CO2

[Svartalfiar]

Not being a chemist sort I’m wondering about the costs of the oxygen to liberate the hydrogen.

'Free', actually. Assuming the scientists here are correct, the last line of the excerpt has the answer you seek:

Around 5% of the H2 produced then powers the oxygen production plant, so the system more than pays for itself.