They mention using waste heat from the reaction to minimize the energy cost of discharge. As long as they still get some power out of it, it could be a win even if it’s quite inefficient. When the input hydrogen is “free” in the summer (due to excess production), inefficiency can be tolerable.
I do wonder if “free” will actually pan out, or whether someone will find a way to demand-shift from winter to summer and use it all up.
I do wonder if “free” will actually pan out, or whether someone will find a way to demand-shift from winter to summer and use it all up.