
I resized image to avoid page resizing, but as you can see my disk with EMP weapon (it looks like drain but it is emp) drains conyard and I got blacked out structures. it disabled building as supposed, so I cannot build anything.
In second picture you can see my disk disabling AI con yard, and on third picture AI still was able to build war factory! Power disabling is working as I noticed, base defense shut down too, but production is not working. I also saw it was able to train flak troopers to attack disk even I disabled barracks as well. Buildings have ImmuneToEMP=no set. In my case it disables production, but not on AI's