Yes, but it can be stored where batteries lose power over time. And a lot of the infrastructure doesn't need to be build but can be converted from natural gas use.

In the end batteries and hydrogen fill two very different gaps. You can use batteries to shift the renewable production peak at noon (thanks solar) to the demand peak in the evening, maybe even flatten fluctuation (in production and demand) over a few days. But they are entirely useless as seasonal long-term storage.

Also plans to produce green hydrogen exist independently. It's a requirement to decarbonise a lot of industry processes where direct use of electricity doesn't work. It's also a raw material in chemical industry.

So if decarbonisation of more than just electricity production is the goal, large scale hydrogen production is a given. As is large scale storage as production from renewable energy will always have seasonal fluctuations. From there having it also double as long-term on-demand stored energy means just scaling up what is already there.