Clarification on the calculation of Energy of CPU in Case study eshoppen

[patrickburgercapgemini]

FAQ

• Question/Observation
  After reading and looking for explanation in the documentation, I do not understand the following formula for Energy
  E = Server utilization * Number of hours * Number of cores * TDP * TDP co-efficient
  in this page case study page eshoppen

• Suggested Answer
  I ask for answer actually.
  Why do need to include the server utilisation, but most of all, how do we get this information ?
  can you clarify the TDP co-effecient element.

thanks