I had one when I lived in Perth. FWIW, my father is an electrical engineer, and he thought it would definately be worthwhile in our situation.
I imagine they are situation specific in terms of the benefit derived. In our situation
- we had fully programmable reverse cycle air-conditioning that used 3 phase power.
- we had processes where the power usage could be set to run at night (pool cleaner).
- given we both worked odd hours, we actually used comparitively little power during peak periods.
Keep in mind, we did not pay for the meter. We got it for free because we had to have the 3 phase hooked up (man did that cost some money) and we also were switched to underground power at the same time (which also cost us a lot). So I think they took pity on us (yeah right
). Actually, I think we qualified soley on the 3 phase connection.
I have to admit, I never paid the powerbills, my wife did. She said that the power company for a while sent us a bill showing what it would have cost us with the normal meter, as opposed to what the cost was with the smart meter. The saving was usually around the $10 per month level, which was significant back then (1995).
Not sure if that really helps, just our experience.