I have successfully configured Power Optimization and Dynamic Optimization few months back, however the report from SCVMM 2012 R2 Console always says that the Power Saved in last 30 days is 0 hours. I am sure that servers are going down as per the schedule and coming back online at the end of the schedule. However, the report seems to be incorrect.
I had a case opened with Microsoft support and got a confirmation now that its a bug.
Should be fixed in the upcoming update roll-up 3.