I received a private message from someone on the forums about this, but since they aren't accepting private messages I can't respond so I figured I'd post my answer here. Plus it's an interesting question anyway, and I prefer to answer questions on the forums where others can see the answer.
The question was about whether AMT provided power usage information. The answer to that is no, AMT (nor the vPro platform as a whole) provides power usage information. I know some of the Intel boards that support vPro (the DQ45CB board, for example) have certain built in voltage sensors, you can look at the Intel Desktop Utilities for more on what's exposed there.
However, there is technology on some of the server side platforms that does provide power usage information, it's called Data Center Manager. You can find out more on that here: http://software.intel.com/sites/datacentermanager/.