[ktgkdodfm]

>And even though gas power plants are the designated backup power plants for times when there is neither enough sun nor wind,

Doesen't that mean that they need to build the capacity to cover their full use regardless(expensive), just that less fuel(cheap) is burned?

[dns_snek]

No, unless you're anticipating that winds will drop to 0 not just across entire Germany, but across the EU.

[ktgkdodfm]

What kind of capacity can Germany rely on to receive from other countries when it's own production is zero? Someone has to have reliable capacity somewhere, usually basic infrastructure such as electricity is built on guarantees, unless Germany has decided it's okay to get blackouts when it's not windy and neighboring countries would rather use their power themselves