If you are also sad at the death of the Google Power Meter have a look at this Pic Power Meter project over at Pyrofer’s Projects.
“The Pic board counts rotations of the disc in 1 minute increments. Every ten minutes it connects to the server over serial (to ethernet UDP) and uploads all ten readings
The server saves these into a mysql database.
I wrote some PHP code to generate graphs of various data, this is proving to be the hardest part. Getting the data to look good. “