Smart Meters not too bright

Something interesting has happened.

Although not well publicised, a Supreme Court decision has exposed a weakness in McGuinty's Smart Meters.
Recently the Supreme Court of Canada ruled that Calgary police had the right to collect details of any customers electricity use to determine if they were growing marijuana. They don't need a search warrant any more.
However, as one of the dissenting judges said, "it is an incremental but ominous step toward the erosion of the right to privacy." They continued to say that a reasonable person wouldn't expect details of electronic use which can detect when a person goes to bed, does chores, etc. to be handed over to another party.
The police had used a 'digital recording ammeter' (DRA) to get a detailed printout of power consumption in a home.
As it turns out a DRA is a smart meter, which has been installed on millions of homes in McGuinty's Ontario.
The Ontario privacy commissioner warned that 'privacy is the smart grid's sleeper issue' because they can reveal a lot about a person's lifestyle, from the time they turn their lights on in the morning until they turn them off at night.

As much as we want to get rid of the handful of marijuana growers, is it worth this invasion of our privacy? More importantly, what was the real motivation of the liberal government by installing these expensive 'smart meters'?
We surely didn't need them and they are clearly another invasion of our privacy.