Gas peaker plants are storage. Well, half of it anyways. Utilities here in Germany are quietly (because that kind of business works best when not everybody is d

Gas peaker plants are storage. Well, half of it anyways. Utilities here in Germany are quietly (because that kind of business works best when not everybody is doing it) ramping up electricity to hydrogen converters everywhere. But not for the 1990ies vision of a full "hydrogen economy" complete with fuel cell cars that don't work and whatnot. They just use them to convert cheap (sometime even negative cost, hence the desire to not inspire too much competition) electricity at peak supply times to hydrogen that they push into the existing gas grid that has a huge storage capacity by itself (think months of national demand). That network is currently carrying mostly natural gas, but it used to carry much higher fractions of hydrogen back in the age of coal gasification. If you can work with natural gas, chances are that you can work with a conservative blend of natural gas and hydrogen with very little extra investment, very much unlike pure hydrogen concepts. (Also, utilities are building a lot of heat storage capacity, so that their cogeneration plants can be freely dispatched according to electricity demand, with the district heating function completely decoupled, even on the seasonal scale)