Years ago, @AmoryLovins called this “ship/store the electron with a proton attached.” Today, even-lower marginal cost of excess electrons from wind and solar means they both create and out-compete with the excess nuke energy production. That is, make your H2 from solar and wind.https://twitter.com/Sammy_Roth/status/1190771528578695168 …
If there is excess electricity, producing H2 would make sense. However, growing adoption of heat pumps and electric vehicles will likely consume any but very temporary excess. Those who plan for H2 production should model the future supply excess, not today's excess generation.