‘N-BABU’ constraint set

This constraint set reflects restrictions as part of an outage on the Balranald to Buronga (X3) 220kV line.

Still air, empty tanks and a hot joint

Mon 29^th June 2026 9:06 AM | Allan O'Neil

Guest author, Allan O'Neil, goes into some detail of exploring the various factors contributing to the price volatility in South Australia that bookended the night of Sunday 21th June into Monday 22nd June 2026.

Unplanned outage on the Balranald- Darlington point X5 220 kV line, and Balranald to Buronga (X3) 220kV line in southern NSW

Wed 21^st January 2026 10:16 AM | Paul McArdle

At 21:14 (NEM time) on Tuesday 19th January 2026 there was an unplanned outage of Balranald- Darlington point X5 220 kV line and Balranald- Buronga point X3 220 kV line. This resulted in the 'N-BABU' constraint set being invoked.