David, I guess you're right. "Here" means Romania and I should have said something about the length too. There are two such installations, each one of about 0.2 miles long, but the trains are a lot shorter and the plant is smaller than your average plant.
here they have built a sort of surface tunnel structures (long sheds) that are used to park the coal cars inside them. then the cars are heated with steam through a bunch of pipes. the sheds are long enough to fit a whole train.
a few words about the structure: the shed is made out of concrete...