No, I’m not confusing anything. I’m simply saying more people using their heaters for longer is what’s putting the strain on the system. You’re the only one that seems confused by something.
And that is wrong.
If you use, in simple terms, 1500 watts, it's 1500 watts. How long you use it is not the issue. The grid was about to over load due to all of the people using it while a system, or part of the network failed.
Let's keep with simple terms. If TVA can produce 45,000 watts at a steady rate per minute, 29 people could use a 1500 watt heater every day and all day and it should be ok. add a 30th person and the system in now at capacity. Add 10 more, and there is not enough to go around. So somebody is going to get shut down. Thus rolling back outs.
These systems are constantly making electricity. Longer has nothing to do with it.
This is why people in this thread and all over the TVA world is saying that this winter snap is not unusual. When I was a kid, we had them. Teen we had them. -12 / 1966, 0 / 1962, 2 / 1985. 4°F (1989).
The issue here is that we have no policy to make our grid better. There has been poor planning for the future. But we are rushing to kill sources and make news ones that make it even worse (Studies show we can not hand;e our needs and transition to electric cars). We have not done anything to accommodate any growth in any direction.
But we can forsure send billions and billions everywhere....