Hi theory team here, I should point out that Hydrogenase refers (usually) to a family (or families depending on the author) of enzymes. Even though they all do the same, it depends on how specific (scientifically) you want to get that we might have to focus on a specific enzyme or just use the general idea of the enzyme family.
So the idea for the Hydrogenase organelle is to produce ATP without oxygen, right? And you don’t know how much ATP (comparing with Mitochondria) it should produce?
If so I could calculate that. Though, it could take some time so I won’t do it if it’s not needed.