Looks like you are going to have 'very big problems' then because thats precisely what they are doing.
Smartgrid is all about:
1. monitoring HOME users on a hourly basis in order to SETUP VARIABLE RATE BILLING.
Now how much do you think that expensive periods will be at 1am? No. You are being scammed.
Its the same as the Enron power brokering of early 2000 again.
2. Turning OFF your usage remotely.
When the overloaded, inefficient system is about to crash they want to be able to run rolling blackouts. When do think this will be? During moderate temps? No, it will be during heatwaves. Now turning off people AC during a heat wave will have bad results.
No a better solution is to be a more efficient Citizen of energy. But thats not nearly as much fun as telling everyone else what to do huh?
Demand that the power companies develop efficient power transmission (its only like 30% now).
(smartgrid does nothing in this area)
And this coming from a person willing to make lots and lots of money selling you a meter (and other smart power devices).
Oh, and it can be hacked pretty easily too. Then I can turn off your power remotely. Loads of fun.