Just tested the 'polling'; still works with R083. However, if the power level hasn't changed, there is no update pushed over WebSocket interface. As little as 6watt difference is notified, but I haven't tried to see how low of a power difference will be pushed.
Good to know.
What's the goal here? Near real time or real time power monitoring ?
You going to plot whole house and maybe a couple of outlets?
After Google Power Meter died I just went with my own stuff, now I'm thinking about throwing something into an App and maybe up to the LCD that plots Current, Daily, Weekly, Weekend, Day, Night, Peak, Low, Monthly, Annual, Trends Daytime, Trends Nighttime, Vampires and Spikes. Need to finish roughing out the 'wants', just dumping it text and then processing with SED & AWK. Really need to do a little Python and/or Curl stuff to make it nice.
I haven't decided on a reasonable polling interval so it needs to be adjustable and I want an adjustable threshold. Thing I haven't worked out yet is how I want to handle startup surges which require very short interval polling but it kind of seems like a waste to bother since I really care about usage of a duration more than a few seconds.
The Google Power Meter API info is still available to get a few more ideas.