In the last half-hour, market notice 121067 has caught our attention, with the AEMO directing Iberdrola’s Walgrove BESS to maintain a particular state-of-charge (59MWh).
Notice ID : 121067 Notice Type Description : Market intervention Creation Date : 27/11/2024 13:28:54 AEMO ELECTRICITY MARKET NOTICE Direction - NSW region to Iberdrola Australia Wallgrove Pty Limited - WALLGROVE BESS Refer to Market Notice 121070. In accordance with clause 4.8.9(a)(1) of the National Electricity Rules, AEMO is issuing a direction to Iberdrola Australia Wallgrove Pty Limited. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1). Direction issued to: Iberdrola Australia Wallgrove Pty Limited - WALLGROVE BESS at 1330 hrs 27/11/2024 Type of resource: bi-directional unit Required actions: Maintain 59 MWh Energy Storage Level and follow dispatch targets at 1430 hrs 27/11/2024 Services provided: Reserve Circumstances necessitating the Direction: Reliability Circumstances necessitating the Direction additional detail: intervention is required to maintain the reliability standard Expected duration: 1900 hrs 27/11/2024. Manager NEM Real Time Operations
This may signify that the AEMO is responding to the LOR2 condition to direct the BESS to avoid being drained too early, however a member of our team also notes that the BESS was subject to constraint N-WALG_BESS_BDU_ZERO today, which constrained the unit to 0MW between the 09:05 and 13:35 dispatch intervals. The presence of that constraint could indicate that on-site maintenance may have been scheduled, which made the direction necessary. We cannot confirm either theory at this point.
The above notice was later followed by market notice 121070:
Notice ID : 121070 Notice Type Description : Market intervention Creation Date : 27/11/2024 13:30:03 AEMO ELECTRICITY MARKET NOTICE Direction - NSW region 27/11/2024 In accordance with clause 4.8.9(a)(1) of the National Electricity Rules, AEMO has issued a direction to a participant in the NSW region. For the purposes of the National Electricity Rules this is a direction under clause 4.8.9(a1)(1). The issue of the direction commences an AEMO intervention event. AEMO declares all trading intervals during the event to be intervention trading intervals, commencing from the interval ending 1335 hrs on 27/11/2024. Intervention pricing does not apply to this AEMO intervention event. AEMO may issue or revoke additional directions in order to meet the current requirement, unless sufficient market response is provided. A further market notice will be issued when all directions related to this requirement have been cancelled. Manager NEM Real Time Operations
And now followed by a notice 121083 to the Waratah BESS (which is still commissioning): 96 MWh to be held in reserve. I was wondering what we’d see today from the commissioning BESS, and it seems that Waratah at least will be in action (to be joined by the Capital BESS?).