low cost circuit monitoring using the micrometer (Score 1)

I had a similar goal to the author in monitoring the circuits of our house (we wanted to gauge production - solar panels against consumption - branch circuits to understand areas in need of optimization). After much research, we ended up installing two micrometer units - http://www.micrometer.com/

Chris Clements aka mr. micrometer - has done a great job of putting together a reasonable priced solution for power monitoring.

As a bonus, the micrometer have a straightforward ASCII interface which makes integrating the data a snap. LMK if you want any additional info, I'm very satisfied with ours.

cheers.

-Ophir