They are, but they still take time to build, and loans to finance. Here are two of SA's (which has the most renewable generation): https://en.wikipedia.org/wik

They are, but they still take time to build, and loans to finance. Here are two of SA's (which has the most renewable generation): https://en.wikipedia.org/wiki/Hornsdale_Power_Reserve https://en.wikipedia.org/wiki/Hornsdale_Power_Reserve https://web.archive.org/web/20220523164905/https://www.electranet.com.au/electranets-battery-storage-project/ https://web.archive.org/web/20220523164905/https://www.elect...