Well, Germany's wind was done without a thought about how to implement storage; it did not have to; it was a perfect egotistic game-theoretic play:

The EU energy market mandates that wind and solar production must be bought before everything else. What happens at the moment is France's nuclear reduces production when Germany's wind is over-producing; there is no energy storage at all.

So right now, on top of wind uselessly adding to max production capacity, it thrashes zero-CO2 nuclear-allocated capital's effectiveness. That's a form of capital theft.

And on top of that, Germany's huge coal baseline continues producing just as before:

https://app.electricitymap.org/zone/DE

Really, the EU rules should be changed so as to account for driveability in energy production.