AER - Ausgrid 2024-29 - PTRM - Transmission - 2026-27 Return on debt update - January 2026

In line with our final decision on Ausgrid's electricity distribution and transmission networks, we have updated Ausgrid's return on debt for 2026–27. As a result of this update, the return on debt for 2026–27 is 4.77 per cent. This results in an X-factor for 2026–27 of –5.72 per cent and –9.78 per cent for its distribution and transmission networks respectively. Holding other things constant, a positive X-factor implies a real revenue decrease and a negative X-factor implies a real revenue increase. The revised PTRM shows the updated X-factor.