Solar systems can be switched off remotely by the network operator, as part of solar curtailment measures.
Western Australia
All solar installations and upgrades with an inverter capacity of 5 kW or less will need to be capable of being remotely turned down or switched off in emergency situations by the network operator.
These requirements were introduced on 14 February 2022 for systems installed after 14 March 2022. These measures allow network operators to take control of (turn off) private and business inverters, in order to stabilise the grid if the demand for electricity becomes too low and the supply too high (minimum demand).
Victoria
Victoria has recently introduced an emergency backstop mechanism for solar installations and upgrades from 1 October 2024. This has been implemented to manage excess solar energy on the grid.
These rules apply across the industry, and are measures put in place to be used in emergencies only, to prevent widespread blackouts and to allow the continued uptake of solar in Australia.
Plico's Virtual Power Plant helps manage supply and demand on the grid. This service includes switching off solar systems and charging member batteries from the grid during times of minimum demand. This helps to avoid mandatory curtailment and generates revenue for Plico members.