Queensland – New South Wales Interconnector

The Queensland – New South Wales Interconnector (QNI) is a 330 kV AC interconnection between New South Wales and Queensland, Australia.
The link was commissioned in 2001. It consisted of double-circuit 330 kV lines between Armidale, Dumaresq, Bulli Creek and Braemar and a double-circuit 275 kV line between Braemar and Tarong.[1]
There is an additional 330KV Dual Circuit to complement the QNI from Bulli Ck Switching Station (27°55'15.8"S 150°50'34.8"E) via Millmerran Power Station & Switching Stations (27°57'53.7"S 151°16'26.9"E) to Middle Ridge Switching Station & 330/275/110KV Sub, South of Toowoomba (27°37'22.2"S 151°56'43.0"E).
The original maximum transfer capacity was 300 to 350 MW in both directions. This has been progressively increased to 700 MW from New South Wales to Queensland and 1,200 MW from Queensland to New South Wales.[2]
The interconnector is operated by TransGrid and Powerlink Queensland.

Queensland – New South Wales Interconnector
StateNew South Wales
General directionsouth-north–south
Passes throughDumaresq
Bulli Creek
Ownership information
Powerlink Queensland
Construction information
Technical information
Type of currentAC
Power rating700 MW (NSW to Queensland)
1,200 MW (Queensland to NSW)
AC voltage330 kV (ArmidaleDumaresqBulli CreekBraemar)
275 kV (BraemarTarong)
No. of circuits2


  1. ^ Blake, Ben (2014). Interconnector capabilities for the national electricity market. Australian energy Market Operator (published July 2014). p. 6.
  2. ^ Project assessment conclusions report—development of the Queensland NSW Interconnector. Powerlink Transgrid. 13 November 2014. p. 16.