Anything a smart meter might be able to do in future will be a consumer choice and will be incentivised through tariffs.
If you hold out against smart meters you will eventually be told that you are on the highest rate 24 hours a day.
These two posts sum up the intention of smart meters.
The government plan (enthusiastically supported by the electricity companies) is to introduce peak-time charging. This will certainly be in the evenings when you've just got in from work, but may also be when the wind doesn't blow.
Economy 7 already exists, but has comparatively low take-up because most consumers don't choose it.
The same technology could already be used to offer skyhigh pricing 6 pm to 11 pm with a lower price at other times. We don't see that tariff being offered by most companies (I think one might), because most consumers wouldn't touch it with a barge pole.
It would also be electoral suicide for most political parties at the polls.
So that very same pricing structure is going to be introduced through the back door.
Instead of having an engineer come to your house to fit a special Economy 7 meter, s/he fits a Smart Meter. No change for you, right?
Then, instead of offering you a peak time price, the utility company offers you an off-peak discount (because the Smart Meter now tells them how much electricity at each exact time of day). Nice for you, right?
Then the price of the "normal" supply goes up and up and up, while the "discount" looks less and less like a discount, and more like what you were paying all along.
And when you turn round and say, "Hey, you just put us on an evening peak tariff and we can't afford to cook dinner and wash the kids clothes in this working-poor household ", the company will turn round and say, "But that was your consumer choice. We haven't done anything: you chose to pay peak pricing."