Redneck in training
Elite Member
Do you mean 396 kV AC? Which isn't a size just a voltage they transmit at. 138kv is popular around here, with longer and major tie points being 345 kV. Transmission lines are higher to use smaller wires, and copper losses.
Populated areas connect smaller stations with 24 or 34 kV, sub-transmission. Rural is transmission stepped right down to 12, 8, or 4 kV.
The size of the PV plant is 396 kW rated power (After conversion from DC to AC). At what voltage it connects to the grid is unknown to me but I would suspect the output from the inverters is three phase.