As the article says the need for storage is for storage that can store maybe 1-3 hours worth of grid capacity energy in the afternoon and discharge it late at n

As the article says the need for storage is for storage that can store maybe 1-3 hours worth of grid capacity energy in the afternoon and discharge it late at night. That doesn't seem like a "strong" need for storage. I would say we have a "strong" need for storage if we need the majority of the grid to be operating on storage for at least half the day - "strong need for storage" is not a now problem. If you go out and build that you are likely to lose money. (But if you really think we need that kind of storage, go invest in it and prove me wrong!)