An ez2view client and avid WattClarity reader was fast off the mark with a tip to look at Waratah BESS - which (via charging at the time) contributed to the price spike in QLD and NSW.
We’re not the only ones who noticed Akaysha Energy’s announcement yesterday (Monday 28th September 2026) that ‘Waratah Super Battery reaches final commercial operations’.
After Wednesday's first SIPS test, the Waratah Super Battery successfully completed its second this afternoon, as it inches closer to commercial operations.
A short post to note that the Waratah Super Battery tested its full SIPS capacity of 700MW for around two hours yesterday morning — the first time it was able to do this since last October's transformer failure.
Today (Friday 5th June 2026) a couple of our readers prodded us to notice the News Update ‘Waratah Super Battery now operating at 700MW’ ... so we had a quick look.
Thursday 16th April 2026 is the first time (since we started looking more closely after the long outage began) that Waratah BESS has ramped more than 400MW in a Dispatch Interval.
With the advantage of ‘next day public’ data we can use ez2view to confirm the 2nd (of 3) transformers at Waratah BESS was returned to service Friday evening 10th April 2026.
Another* of our keen readers (and ez2view users) flagged some more machinations to us with respect to Waratah BESS that occurred yesterday (Monday 23rd March 2026).
This article’s a short one triggered by Angela Macdonald-Smith’s article in the AFR on Wednesday afternoon titled ‘Waratah Super Battery faces longer delay in test for NSW grid’.
In this instalment of our annual review of the NEM’s expanding battery fleet, we draw on the GSD2025 to look at long-term trends in market revenue, high-price capture, the early returns of FPP, and network curtailment.
No, it looks like the data we saw (for Waratah BESS) to prompt yesterday morning's article at 08:14 (NEM time) was probably just a Data Entry Error that was corrected shortly afterwards.
Probably worthwhile to note that there’s been some recent changes in AEMO market data with respect to the long partial outage for the WTAHB1 unit (late on Tuesday 13th January 2026).
Identifying 5 distinct time periods (from 26th Sept 2025 to 21st Nov 2025) with Waratah BESS, we take ez2view and some external references to try to piece together sequence of events in 3 of these 5 time periods.
On Friday afternoon we asked the question ‘What’s up with Waratah BESS (unplanned outage till 3rd May 2026)?’. It was great to see (on Monday evening) Angela MacDonald-Smith answer some of these questions in the AFR, and then a media update from Akaysha Energy.
Another in the series about Waratah BESS, we have a look at the unit's bids and operations over a 20-day time-range to midnight ending Saturday 8th November 2025.
In the next in the series about Waratah BESS, we have a look at a 9-day time-range to midnight ending Saturday 18th October 2025 via the ‘Bids & Offers’ widget in ez2view.
Almost exactly 3 months ago we posted a ~12 month chronological record of the history of Waratah BESS. Due to observations today (and questions and conversations leading from them) it was worthwhile to update this trend.
Today we see that, for the WTAHB1 unit in the MT PASA DUID Availability data set, there's now an unplanned outage for Waratah BESS extending well off the page.
Worth copying in here AEMO's Market Notice 129413 published late Friday afternoon 3rd October 2025 pertaining to the coming two-year period - because of some changes and other notes.
In this article we take a look at operations of Waratah BESS through August 2025 - including some large Dispatch Errors on several days: (a) including Fri 29th Aug 2025, and how WTAH1 apparently helped to drive frequency the wrong way; (b) and Tue 19th...