Just checked the power consumption (in idle) for my humble system.
SuperNait 2: 18 W.
HiCap DR: 5.6 W.
NDX 2: 0.3 W without sever mode. 16 W with server mode.
Rega Aria: 11 W
The Aria phono stage is shut down while not in use. The others are left on. Around 40 W in total.