Link: https://wattclarity.com.au/articles/2026/04/is-a-battery-correlation-penalty-looming/

The battery fleet’s capacity has ramped up faster than the wind or solar fleet did at a comparable size. With at least 7.7 GW of additional batteries still coming, the growth of batteries will reach a much faster rate than at any stage of the solar buildout.
Source: NEMreview.

To me, the more striking figure is behind-the-meter. In the first nine months of the federal government’s home battery subsidy scheme, somewhere in the vicinity of 4 to 5 GW of residential battery capacity has already been installed. Like rooftop solar before it, the vast majority of this capacity is effectively being dispatched before utility-scale storage assets — quietly shrinking the parts of the duck curve that grid-scale batteries target.