Does anybody have any experience with this new tool or know whether any further guidance on how it should be used is available?

I have two questions in particular:
1) How is the baseline electrical system efficiency determined?
2) Where are the electrical losses of the server Power Supply Units accounted for?

The tool looks extremely useful but having worked through it I remain unsure about how I should document electrical system efficiency when using it. A means to input overall system efficiency at various loads is offered, but I can only see limited information on how to determine these. My initial thoughts here are that I should start by adapting the baseline calculation to ensure my method aligns with this. But the formula for the baseline calculation are not visible in the tool.

The tool i am referring to is on the USGBC site here: http://www.usgbc.org/resources/minimum-energy-performance-data-center-ca....

Many thanks for any help you can offer.