Done Windmills dissapeared

i was wondering why i didn't get any energy,
went to the top of the base, and found out my wind turbines disappeared.
Can anyone check this out real quickly?
Thanks

edit:
i made a few more wind turbines but i didn't place em at the place where my wind mills disappeared, to not interfer with investigation

 

Tagging @Moderator
Can you please provide more details? Like coords where was your windmills?

 

You can also just, come online and tp to me.

 

i'm not at home.

 

ok, fine,
i placed glass at the place my windmills were,
x: 2766
y: 80
z: 787

 

@destinyyjoice is loading Horizons right now.

 

[DOUBLEPOST=1437573390,1437573375][/DOUBLEPOST]Horizons,
I'm going there right now[DOUBLEPOST=1437576169][/DOUBLEPOST]Marking as done - windmills were returned

 

jim, you know to do /ticket, , you know why, i don't think i need to explain anything more to you about that