Source is OpenElectricity.org.au - you can view more (or less) details on the chart at that link.
Notes:
- Loads: Area below the zero line is Loads (exports and power stored in batteries or pumped hydro).
- Curtailment: The white-hatched area above Solar shows renewable generation which was curtailed (switched off or just unused) due to excess generation which could not be stored.
- Battery Charging cost is due to batteries charging in the middle of the day when wholesale prices are negative.
| Sources | Energy (GWh) | Contribution | Cost per MWh |
|---|---|---|---|
| Solar | 8,860 | 16.7% | $13.67 |
| Wind | 13,738 | 25.8% | $32.81 |
| Hydro | 2,448 | 4.6% | $114.58 |
| Battery (Discharging) | 978 | 1.8% | $99.21 |
| Gas | 816 | 1.5% | $149.02 |
| Coal | 30,162 | 56.7% | $57.82 |
| Imports | 2,151 | 4.0% | – |
| Loads | -7,129 | ||
| Exports | -5,960 | -11.2% | – |
| Battery (Charging) | -1,169 | -2.2% | $17.68 |
| Curtailment | |||
| Solar | 634 | 1.2% | |
| Wind | 2,639 | 5.0% | |
| Net | 52,025 | ||
| Renewables | 25,047 | 47.1% |
Coal also hides the real costs too, like the cleanup caused by air pollution, health, etc. There are also coal seam fires that have been burning for years