How does the IESO ensure that there is enough electricity to meet demand?
Managing the power system is a 24-hour-a-day, 7-day-a-week responsibility. On a continual basis, the IESO forecasts how much power is needed throughout the province and takes in offers from generators and other suppliers to meet that demand. See How the Wholesale Price is Determined for more information about how the IESO balances supply and demand. Over the long term, the IESO issues assessments of the reliability of the system and the adequacy of the existing and planned transmission and generation facilities to meet growing demand. The quarterly Power Outlooks provide three-month overviews of power demand and system reliability. The semi-annual Ontario Reliability Outlook reports on the progress of interrelated generation, transmission and demand-management projects underway to meet future reliability requirements.
