Long-duration storage fills ahead of the most stressed days and carries its charge across the year

Note: Illustrative: Victoria's long-duration storage in the 2030 forecast year. Net load is demand less wind, solar and run-of-river hydro. The plan starts the year at 50%, stays within 5% to 95% (shaded), and fills ahead of the 5% of days with the highest net load at a bounded daily rate.