It was kinda hinted they were made as some kind of techno-magical batteries by the Cyclopses.
So now with technology made a bit more clear, any ideas on power output?
I Imagine that with the smoking tower having its own 100 point techno-magical power plant it should be somewhat similar. Considering that Tiberoliths can also defend themselves, well, maybe halve that to 50. And that it is very much a kind of free add-on effect..
Or perhaps just 25, forcing the old cyclops empire into a really inefficient mass-production of their dear Tiberoliths to get any kind of serious power.. haha! (and thus ruining themselves on a lack on power)