It's clearly explained in the article it's frequency stability it's talking about.
>When an issue happens or maintenance is required on the power grid in Australia, the Energy Market Operator calls for FCAS (frequency control and ancillary services) which consists of large and costly gas generators and steam turbines kicking in to compensate for the loss of power.
>When an issue happens or maintenance is required on the power grid in Australia, the Energy Market Operator calls for FCAS (frequency control and ancillary services) which consists of large and costly gas generators and steam turbines kicking in to compensate for the loss of power.