I found the likely source of what you heard bout a Swiss-German wind-hydro cooperation: a Swiss parliamentary study (sorry link in German) on what to replace nuclear capacity with (Switzerland exits nuclear power, too). The study from this April argues that Switzerland is not well suited for wind power due to siting restrictions, but the rest of Europe has more than enough potential while Switzerland has hydro potential, so it would be best for Switzerland to 'serve' its neighbours with balancing power.

The article says that currently, Switzerland has 13.3 GW in hydro capacity, of which 1.7 GW is pumped hydro; and the study predicts the addition of 6 GW of power production capacity and 4 GW of pumped hydro capacity.


<sub>Lunatic, n.

One whose delusions are out of fashion.</sub>