South Australia is a much smaller energy market: https://aemo.com.au/en/energy-systems/electricity/national-electricity-market-nem/data-nem/data-dashboard-nem h

South Australia is a much smaller energy market: https://aemo.com.au/en/energy-systems/electricity/national-electricity-market-nem/data-nem/data-dashboard-nem https://aemo.com.au/en/energy-systems/electricity/national-e... That graph actually does go to 0, but it peaks at only 2.5GW. The grid is backstopped by two state interconnectors[1] with a third under construction. The existing two have 650MW and 220MW of capacity. The new one will have 800MW of capacity. Just those two connectors sum to 0.87GW, or 34% of the peak usage of the state. The demand low overnight is less then the capacity of those interconnectors. SA backstops it's baseload through other states (and there's nothing wrong with that, but someone, somewhere, has to have the generating capacity to provide that - if it's all batteries, then none of that helps). [1] https://www.energymining.sa.gov.au/consumers/energy-grid-and-supply/our-electricity-supply-and-market https://www.energymining.sa.gov.au/consumers/energy-grid-and...