No worries fren this place teaches me so much. That’s a good question and tough one to answer. Essentially the more connections (generators and transmission capacity) there are, the more stable a grid is. You could (and we sometimes do) isolate sections to prevent cascading failures but there’s a lot of variables at play, such as power flow and system frequency, that could affect something downstream. It really comes down to not having enough generators and not enough infrastructure to transmit power.

We spend billions on upgrades annually on our state’s grid and that’s just to barely keep up. The so called green energy stuff is handcuffing grids all over the nation. Between muh green energy and muh supply chain, things are going to get interesting.