Sorry for the hijack.
Biggest problem with Domestic Solar.
The Power delivery people don't allow extra capacity in the system to cope with the power delivered in the local neighbourhood.
So you get a system that's perfect, up till it enters the delivery area.
Then all the Domestic Contributions, with their unreliable quantities due to weather/time of day etc., destabilize the amount needed to cope.
It's a far greater problem than people randomly turning things on and off.
The current network was never designed for large amounts of energy coming back into the distribution network.
When the initial 44c rebate on solar came in, distribution networks had to adjust (and still are) to cope with the energy being pushed back onto the grid.
Those continual network adjustments cost money. That money has to be gotten from somewhere...
Have a guess where?
Anyway, sorry for the thread hijack. Maybe we should get this one back to the NBN...
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