system frequency

  • Energy storage and flexibility

    Chart of the week | Cha-Cha Slide: COVID-19 & falling levels of inertia

    The level of inertia on the system is a key contributor to electricity system stability. Inertia is an attribute of the system related to the energy stored in the rotating motors of synchronous generators. It prevents system frequency from falling too quickly after a frequency disturbance (e.g. a generator trip)....

  • Energy storage and flexibility

    Australian Chart of the week | The more things change, the more they stay the same…

    This Chart of the week focuses on the comparatively small but important Frequency Control Ancillary Services (FCAS) in the NEM. FCAS in terms of total dollars is minuscule in comparison to the total energy bill. While the proportion may appear small, its function is key to maintaining a secure operating...