100W idle is quite a lot in absolute terms, and more than I'd like because my boxes tend to run 24/7 (as do yours, I assume), but I suppose for the sheer amount

100W idle is quite a lot in absolute terms, and more than I'd like because my boxes tend to run 24/7 (as do yours, I assume), but I suppose for the sheer amount of hardware you're running it's actually pretty reasonable. So energy cost would be about €240/year where I live, assuming permanent idling. Not exactly cheap, but you get what you pay for I guess :-) Thanks a lot for the info, and congrats on the sweet rig :-)