Australia’s solar capacity has grown so large that electricity retailers are now required to offer customers three consecutive hours of free power every day during peak solar generation periods, according to a report published June 30 by The Guardian. The rule, known as the Solar Sharer Offer (SSO), took effect in South Australia and is tied directly to the midday glut of solar generation that regularly overwhelms the state’s grid.
The non-obvious detail buried in that headline: the free electricity window is not a promotional gesture — it is a grid-management tool. When solar output exceeds demand, wholesale electricity prices can go negative, meaning generators are effectively paying the grid to take their power. Retailers pass that window to consumers as zero-cost electricity rather than let the surplus destabilize transmission infrastructure.
