On my Windows PC (AMD 5900X CPU), I found that with Adobe CC Desktop and the "CEF Helper" apps running in the background, the CPU will "idle" at 17 Watts. This is with no Adobe applications running. If I kill CEF Helper and all the other Adobe CC and updater background apps, my idle power drops down below 3 Watts. (This is CPU power as reported by the Ryzen Master software)
Looking at Task Manager, Adobe CEF Helper is always using at least 1% CPU even when everything is idle. That also means that software like Ryzen Master and Windows Tasks manager, which are monitoring resource usage and updating graphs on screen a couple times a second, are using much much less CPU than the Adobe "background" tasks!
14W may not sound like a lot, but multiply that by a million PCs running this software and what a waste of power!