Integrated System Plan (ISP) Feedback Loop Notices

Context

AEMO’s Integrated System Plan (ISP) establishes a whole-of-system plan for the efficient development of the power system. In July 2020, AEMO published the 2020 ISP, which identified the optimal development path. The optimal development path contains a series of power system investments, some of which are classified as “actionable ISP projects”. 

Transmission Network Service Providers (TNSPs) are required to assess the actionable ISP projects through the Regulatory Investment Test for Transmission (RIT-T). 

Following completion of the RIT-T, a TNSP may seek written confirmation from AEMO to confirm that the preferred option from the RIT-T remains aligned with the optimal development path in the most recent ISP. This process is referred to as the “feedback loop”.