Error in autarky result calculation

It seems to be something wrong with the autarky result calculation.
For systems that are completely dependent on energy suppliers, the autarky should be 0. As shown in the screenshot, the autarky is, in my opinion, significantly too high. 

<img width="1034" height="622" alt="Image" src="https://github.com/user-attachments/assets/897b063a-f7a0-4684-99bc-2cdc52b795e3" />