The display extends from the early morning on Wed May 13 to 4am on Friday 15. The display lags and that was the end of the visible story when this post was hoisted on Sunday morning. There was next to no wind through the whole of Thursday 14 into the 15th. The source is the Fuel Mix tab on the AEMO Data Dashboard.
Looking at the live situation on the Aneroid site on Saturday morning the Victorian windmills were providing 25.5MW – that is 1% of the installed capacity (2.45GW). That means there was virtually no wind power in Victoria for more than 24 hours.
That comes from the Wind Energy display on the ANEROID site that is a separate entity, set up years ago by a private agency with information from the AEMO presented in a way that people could understand. That prompted the AEMO to lift their game.
Looking at the whole of SE Australia at 6am the wind was providing 9% of the electrons, in SA it was 30% at 16% capacity of their 2.1GW windfleet. Interesting! they have been overtaken by Victoria, the new wind leader in installed capacity if not in delivery when the wind fails to turn up!
Wind Information. On the side of the Wind Energy display is a map of Australia with wind velocities forcast two days hence (don’t ask) so today you can read a wind forecast for 4pm on the 18th issued by the BOM on the 16th. Yesterday a wind drought was predicted for Victoria this afternoon and it may lift somewhat on Monday. Re Gerry’s comment, I have suggested that the wind contribution should be in the regular weather reports that radio stations broadcast on the hour.
Here it is! The wind supply across the nation any time you want it. Not looking good for the South East!
Battery capacity. Yesterday I checked the Musk battery capacity to find if the figure of 20 minutes of supply from the Hornsdale windfarm was correct (and 3 to 4 minutes for the whole state of SA). As per Mark M it stores 129 MWhrs of power and can discharge at 100MW that will last for 77 minutes. Hornsdale it is 315MW project with 99 turbines and on the AEMO data base there are three units of 100, 100 and 112MW capacity and I think the battery is connected to Hornsdale No 2. The 20 minutes figure assumed that it maintained the flow from the three units.
Shifting to the whole of SA where the demand can reach 2GW or 2000MW the battery would last for 3.8 minutes although the demand can go below 1GW and then it would last longer!
It is (feebly) justified as a way to cushion the transition to gas when the wind dies but the fundamental problem is the fragility of the grid caused by the injection of intermittent energy. Anyway how can you say that the transition to gas is cushioned by maintaining a flow from a single 100MW source into a system demanding 2000MW?
BREAKING NEWS. New Zealand surprises by dropping climate change mitigation as the priority in favour of economic revival. Just as well, their hole is deeper than ours.