Risk glossary


Ancillary services

Services that are designed to maintain the reliability of power supply to end-users. Ancillary services can include regulation, spinning reserve, non-spinning reserve and replacement reserve. They are provided by participants with excess generation capacity. Independent system operators (ISO) create a market for buying and selling ancillary services, which help control the flow of electricity and provide energy ‘reserves’ to maintain reliability.

  • LinkedIn  
  • Save this article
  • Print this page  

You need to sign in to use this feature. If you don’t have a Risk.net account, please register for a trial.

Sign in
You are currently on corporate access.

To use this feature you will need an individual account. If you have one already please sign in.

Sign in.

Alternatively you can request an individual account here: