all public price markets: 1 markets, 23 Oct 23:00 UTC
Most since we started · Markets with a negative price · all public price markets. Tracked since 23 Oct 2026, the first date in our data for this series. This is not a historical record.
Status: Superseded · since 23 Oct 2026 · superseded by a newer value
1D markets
- Interval starting 2026-10-23T23:00:00Z (300 s)
- First seen 2026-10-24T16:43:30Z
- Checked against a second batch fetched 2026-10-24T17:00:24Z
Sources & licences
Data: Source: Australian Energy Market Operator (AEMO), NEMWEB. source licence Derived numbers and charts: CC BY 4.0, SolarCostData Data Desk (licence). Source data keeps its own licence.
Series around the value; the marked point is the tracked interval. Derived by SolarCostData from the published values.
Context
Most markets negative at once: 1 of the public price markets had a negative price at the same moment, 2026-10-23 23:00 UTC. Coverage was at least 95% of the public price markets, and this is the most since we started tracking on 2026-10-23.
No earlier tracked value of this kind exists in our data window, so this entry is a baseline that later readings can beat. Baseline entries are not marked notable and are not offered to search engines.
Conditions in the data at the same time: NEM South Australia price rt5 -8.0 AUD/MWh (reading at 23:00 UTC). These are the readings nearest to the tracked interval in the same database, shown for context only; they do not explain the value on their own.
First seen in a batch fetched at 2026-10-24 16:43 UTC (payload backfill:7). It was checked after a second batch fetched at 2026-10-24 17:00 UTC (payload 4631ae34be): a later batch arrived, this feed does not republish old intervals, and the stored point stayed unrevised, unflagged and within 2%.
These values are built from provisional operator data that can be revised, so each one is checked against later batches before it is marked Tracking and can be withdrawn if the source changes it. Readings outside market bounds, with a wrong unit, flagged by a quality gate or showing a price jump without a matching load change are rejected and never listed. See the methodology page for the full rules. Not for trading or operational decisions. Provisional data.
Not for trading or operational decisions. Provisional data.