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