Fairly certain the only way you are going to get this is to meter something directly on the PDUs or power drops where these are connected. This was something I remember trying to get from EMC a few years back and they were unable to produce any information on a DMX-3000 series.

Not sure if you have in-house or contractor electricians, but this is something that an electrician should be able to do for you with minimal effort. The downside being that it would be a sampling and not a running collection.

Be interesting to see if you get anything more detailed on this post.