> Yet there are whole weeks practically without wind in winter. And most climate models estimate that global warming reduces wind further.

Not for the combination of [continent-wide, offshore, the Atlantic coast].

The Atlantic continental shelf isn't correlated with the Baltic.

Offshore Dunkelflaute is much shorter than on-shore.

> Storage in the required dimensions is an unsolved problem.

Also false. The required quantities even of batteries is comparable to electrification of road transport.

Also, independently of batteries, hydro plants come in two flavours that people often mix up: generation, and storage. Of these, only generation requires an associated upstream supply and watershed; storage can be done with a hole in the ground, of which there are plenty, and just the currently and soon-to-be closed coal mines in the EU can be converted to around 13 TWh of pumped storage: https://gfzpublic.gfz.de/rest/items/item_5038282_1/component...

And it's not like we can't dig more holes if we wanted to, we dig holes to get out rocks even though rocks are one of the cheapest things you can buy.

Storage in the required dimensions is an unsolved problem.

No, it's not. Decommissioned nuclear plant infrastructure used as massive battery storage.

https://gesi-deutschland.de/en/gesi-project-presented-in-gro...