When the future arrives, lots of people will be amazed at how little of the solution to this "issue" ended up being storage as such and how much turned out to be demand management and reasonable system architecture.
When the future arrives, we will build enough nuclear reactors.
Hopefully before China eats our lunch.
Who is "we"? There don't seem to be any investors eager to build these...
From TFA: "...to build new wind and solar farms equipped with storage systems"
Right, because writing this sentence makes the technology exist.