It isn't being framed in this manner but I think hydrogen needs to be thought of as a energy storage technology instead of an energy generation technology.

In every case so far it takes more energy to separate out the hydrogen than you get in energy from the hydrogen separated out. This allows you to store a good percentage of the energy, minus conversion costs, from a source in the form of hydrogen that could be used later as needed.

Too often I read breathless claims that somehow 'hydrogen' will solve all sort of problems. Most of these these reports are focused on the grand benefits of using hydrogen. But they are very light on explaining where you get the energy to extract the hydrogen from the water.