Photos never give the scale justice!
I was lucky enough to go to Electric Mountain in a work related capacity. I still have a hand drawn diagram of the way it works and a (very) professional document detailing what the generators are capable of. The turbine hall sports 2 X 200T overhead cranes that have to be used in tandem to remove a turbine (weighing 350T).
It is also one of the grids "Black Start" power stations, used to restore the grid if there is a regional or national blackout. The generation of the AC phase (50Hz) is very precise as other stations coming on need to be "pulled" into phase by the reference station.
Fantastic bit of kit and amazing engineering