There are two systems that I am aware of for power monitoring and reporting. One from SquareD called powerlogic and another called ION from PowerMeasurement (PML). Both of these were bought by Schneider Electric and merged into one website. I don't know if their software works with 3rd party metering devices.
http://www.powerlogic.com/index.cfm
I would imagine Seimens would have something available for this. Kepware might have something available for this as well.
