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About half of Austin has been out for 42 hours now. Source: I’m one of them.

That's ridiculous. I always thought the point of rolling blackouts was to make sure no one area was without power for too long.

Rolling only works for demand overages of up to 20% or so. With a loss of generation capacity of over 1/3rd of generation that is out the window.

They were trying to keep the grid alive and not have a statewide blackout.