The flooding, this week, of coal supplies at Yallourn Power station (as reported here in the Age) – plus the reference to NEM-Watch in the Channel Ten news in Melbourne on Thursday night (seen here, at least currently) prompted us to have a brief look at what had happened:
Using the NEM-Review historical analysis package, we can see how Yallourn output was significantly curtailed from Tuesday afternoon onwards as each of 3 units were progressively withdrawn from service.
It was not until the following day that power prices pushed noticeably upwards, though – and then only to a very minor degree due to the large surplus of generation capacity in Victoria, and also elsewhere around the NEM.
The following chart (from NEM-Review) shows output of Victorian stations aggregated by fuel type – illustrating how Victoria reversed its normal position (as an exporter of electricity) to import electricity from neighbouring regions.
This afternoon, we see a similar story in the NEM-Watch real-time dashboard:
For a more detailed view of what’s currently happening within the Victorian region, we refer to the ez2viewAustralia (trader’s dashboard) to see how Yallourn output is still restricted to low load at one unit, and the wind is still in the doldrums: