Yes it seems I have come up with something that already exists (only on a per-household basis not by city)
Why wouldn't this work on a bigger scale though? it could be implemented by Eskom today, without needing to install millions of user devices.
I mean, surely if your town gets cut you will switch off some stuff at least? Especially when it cuts again and you have to sit for another 30 minutes without power. and then another hour. then two.
I really think there is no incentive with the current system. With this new load limiting system there is, even if it functions on a bigger scale.
It could work, just comes down to buy in from people, which is where the problem is, not everyone cares to 'save'. If power goes off, they have backups to last them days. There is no incentives for them, regardless of implemented system. Load shedding does not affect them.
Edit: The only big issue that was brought up by many in previous discussion with systems like load limiting and your concept here is the frequent 'on/off' of electronic goods. It need to be handled properly, sufficient warning etc. Something needs to be done to implement it properly. Electronics will be frying in no time
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