Hi, I'm still relatively new to anno. I'm just far enough in my first game to develop items in the academy. So I made "Full LED convertion", which should reduce Energy consumption of all Needs Buildings in the category Information by 30%. I've put it into an empty socket in the ark, but it didn't do anything.
I have the same problem with the item "Daylight headlights", but I've stored "Optimized rotor Blades" in a warehouse, and it works.
I've read somewhere that items on the ark don't work in offline mode, but I'm not playing offline. Can anyone help me?