Independent Electricity System Operator (IESO)

Built World

Forecasting 75% demand growth by 2050 in its October 2024 outlook

Ontario is running two nuclear refurbishments at once. Bruce Power returned Unit 3 to the grid in 2026, seven months ahead of its January 2027 target and $150 million under budget, and says it is halfway through a six-unit, $13 billion program. Ontario Power Generation finished Darlington's four units in February 2026.

Updated Oct 23