Board Thread:Warhammer 40k General Discussion/@comment-5.65.81.205-20131002091720/@comment-3258762-20131117183306

Yes but the Golden Throne complex, powered by a Psyker, IS the webway gate. It's not a way to create a gate, it literally is part of the gate. If it is not powered, it won't work, until humanity can discover what the Eldar were dicking around with that let them maintain their portals without someone directing them.

If the Webway project was finished then that would mean the Golden Throne was a functioning Webway Gate, meant to be powered by Magnus' psychic power, probably ensuring that the paths remained protected from Daemonic incursion and the like.