About Ontario Grid
A clearer view of the power behind the plug.
The electricity behind a light switch comes from many places. This site helps you see which Ontario generators are running, how the mix changes, and what the grid may need next.
Why this site exists
I work in the energy industry and wanted an easier way to spot changes in plant output and investigate possible outages.
About the websiteHow Ontario's grid works
A short guide to the energy mix, why plants sometimes slow down, and what the IESO expects between now and 2050.
Explore the gridHow the numbers are calculated
See where the IESO data comes from and how the live mix, history, capacity factor, prices and estimated revenue are calculated.
Read the methodology