This article is just wrong. The premise is:

  * About 35% of Germany’s gas is used to generate electricity.

  * Eliminating German electricity from gas would thus nearly eliminate Germany’s purchase of Russian gas.

But Germany only uses 12% of gas for electricity: https://www.bdew.de/service/daten-und-grafiken/entwicklung-d... this usage has gone down another 15% in January/February 2022 before the war even started: https://www.bdew.de/service/daten-und-grafiken/stromerzeugun...

The author seems to have taken the 35% figure from https://oilprice.com/Energy/Natural-Gas/Germanys-Growing-Gas... where is is labeled "Power" in the chart. Whatever that is supposed to mean. But it is not electricity. I could not find any public information about this on: https://www.rystadenergy.com/energy-themes/commodity-markets....

Also some gas plants are used for electricity/heat co-generation so you cannot simply replace them with nuclear. Gas peaker plants have a completely different usage from nuclear plants.