Seems so pointless!
Saving the cost of several power stations is very laudable, but this may be a case of uninformed bureaucracy at its best. Let's face it. The IT industry is changing fast. We are just getting announcements of terabyte SSDs with 4 W operating power and 0.4 W on standby. HMC brings 30 to 40 percent saving in CPU/memory power and 3D X-point will bring more. Hyper-converged systems mean no need for storage boxes.
More important, desktops and workstations are going away. They no longer fill the use cases when compared to tablets. Even CAD and advanced video-editing has moved to the cloud, and just uses tablets to display results. There are power savings galore in the future of computers! We don't need an out-of-date and out-of-touch standard to get there. (I bet prices in California go up a lot!).
Anyway, the technical options are much better than the standard. We can get power supply chips that are better than 99 percent efficient...mandate those! We have storage compression that cuts capacity use by 80 percent. Mandate that!