Akaysha writes ‘Waratah Super Battery now operating at 700MW’
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.
Waratah BESS
Waratah BESS more significantly ramps, on Thursday 16th April 2026
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.
The second transformer at Waratah BESS is operational (for testing)
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.
What’s up with Waratah BESS … again?!
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).
AFR (and elsewhere) notes more machinations at Waratah BESS
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’.
The state-of-charge for 2025: The NEM’s battery fleet crosses the chasm
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 entry for Waratah BESS was a Data Entry Error?
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.
Late January testing planned for a problem transformer at Waratah BESS? (Nope – a data entry error?)
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).
Further thoughts (and questions) about Waratah BESS, two weeks after the snowball started to roll…
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.
Angela’s article in AFR answers some of our "What’s up with Waratah BESS?" question
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.
A quick look at (plant-related) rebids for Waratah BESS from 19th October to 8th November 2025 (with PASA Avail 350MW)
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.
A quick look at (plant-related) rebids for Waratah BESS to 19th October 2025 (during Hold Point 5 testing for full discharge)
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.
An updated longer term trend (and tabulation) of operations at Waratah BESS
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.
What’s up with Waratah BESS (unplanned outage till 3rd May 2026)?
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.
AEMO updated MT PASA guidance, on 3rd October 2025
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.
Looking more at (commissioning) operations at Waratah BESS through August 2025
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...
Recapping operations at Waratah BESS (including enablement for SIPS) … to August 2025
The Waratah Super Battery System Integrity Protection Scheme (SIPS) was enabled by TransGrid at last Friday 1st August 2025. This prompts this look back on operations thus far.
The state-of-charge for 2024: The highs and lows of the big battery boom
Following on from a similar review this time last year, Dan provides an updated look at the economics and performances within the NEM's big battery fleet, making use of our recently released GSD2024.
Which units are still offline in NSW and QLD, as of 3:30pm on 27th Nov 2024
A quick look at our generator outages widget from ez2view, to see which units are still offline as of 3:30pm on Wednesday 27th November 2024.
Waratah BESS also directed to maintain state of charge on Wednesday afternoon, 27th Nov 2024
The Waratah BESS has receieved a direction to maintain a state of charge of 96MWh, not long after Wallgrove BESS received a similar instruction.