AER - Data period for calculation of MIC performance target (Transmission STPIS) - Guidance note - November 2021

On 5 November 2021, the AER published its draft guidance note that clarifies the data period to be used in setting the Market Impact Component (MIC) performance target under version 5 of the transmission service performance incentive scheme (STPIS).

This guidance note is intended as a supplement to the STPIS scheme instrument, rather than a new appendix to the scheme instrument.

The guidance note covers:

• context to the application of the Scheme to TNSPs and the framework in which it is applied (section 2)
• the requirements of the Scheme with respect to calculation of the MIC performance target, including our expectations in this regard (section 3)
• a worked example (section 4).