Earlier quoted context omitted.
The customer debt from this can be sold off, but you might be lucky to get a penny-on-the-dollar for it.
Maybe, because it's going to (on average) be hard to collect. But the debt doesn't go away automatically or get reduced, it goes to whoever paid that penny... (Now, if that's John Oliver [0], maybe it also gets forgiven, but that's not the usual case...) [0] https://www.globalcitizen.org/en/content/john-oliver-buys-15...
If Griddy is booted out of ERCOT, Griddy (or its assignees) probably can't prevent them from switching to other providers with a balance due, and probably can't have their electricity turned off for non-payment, so for customers that ended up with a balance due in the thousands, I expect they'll have to write off a lot of that.
(I'm not a lawyer, if I was a lawyer, I wouldn't be admitted in Texas, I didn't even read the law, just a web page that looked appropriate)