Olkiluoto 3, Finlands newest nuclear reactor sells electricity for 40€/MWh. Even if you double that, to account for the French subsidy, you only end up at $86/MWh after currency conversion.
The same Lazard research report also states that: "Combustion turbines for 100% hydrogen are not commercially available today".
Given that you have to produce something other than hydrogen to produce clean energy this drives down efficiency further.
So, what are these completely insane things that you can do with renewable energy sources and still come out ahead?