[Shiraz (Ray)]

agree, a battery adds the "synchronous" bit to wind and solar generators - it doesn't take the place of other generation and the Grattan Institute has mislead if they are implying that such a small capacity is useless.

If SA had a battery in place during the statewide blackout, it would have helped stabilise the majority of the grid through the few minutes of severe instability when the towers were being blown down, the wind generators would not have sensed a grid condition that forced them to disconnect and there would have been no blackout at all. Battery storage acts like a shock absorber and changes the game entirely when wind generators are used.