Google’s datacenter power management relies on software features that nobody outside Google is prepared to accept. Most operators expect to have thermal headroom for short CPU clock rate bursts and they don’t want some central daemon downclocking their machines. From what I’ve seen outside Google, most organizations would get much more benefit from focusing on utilization than trying to replicate Google fan speed control techniques. If you still have UPSs and dual AC-DC power supplies in every box and your PUE is 2.0 you don’t need the thing that allowed Google to go from 1.11 to 1.10.