Thanks for the compliments!
Because I don't have room for a large running layout, I went the diorama route. This way, there was enough room for the plant and service tracks.
The last structure I added is the plant's office building. It's from the Pikestuff Kitbasher Series. Pikestuff is the only company I know of that produces a kit for a modern office building. The only thing left to do with the structure is to fill a few open spaces at the bottom and attached an Evergreen sheet under it.