In the past week we’ve seen the last three units at Liddell close:
- LD04 was second unit to close, on Monday 24th April (remembering LD03 was closed over a year ago).
- LD02 was third unit to close, on Wednesday 26th April.
- LD01 was last unit to close, on Friday 28th April (to a bit of fanfare as well).
This weekend we’ve been reminded of the challenges inherent in charting a course through this energy transition – here’s an annotated image from NEMwatch at the 18:40 dispatch interval on Sunday 30th April:
As per the annotations:
1) There was a large contribution from solar (both rooftop PV and Large-Scale Solar) through daylight hours, which drove prices negative in a number of regions for a period of time;
2) During these negatively prices periods, it’s a pretty fair bet that some wind farms were dispatched down as a result of bidding at or above their ‘negative LGC’ price band;
3) Outside of these negatively priced periods we see the aggregate production from wind was still at or below 1,000MW (dropped to a low of 594MW aggregate InitialMW metered at 18:55, as I type this) … one reason why prices in the mainland were well above $100/MWh through the night.
4) Note that network constraints may well have been a factor in curtailing production from some wind farms through the past 24 hours:
(a) Either (or both) sunlight periods and darkness periods
(b) I’ve not checked.
That’s all for now…