Alberta's energy grid ran on reserves Wednesday, after multiple factors led to a supply shortage. At 3:52 p.m. Wednesday, the Alberta Electric System Operator issued a Level 2 alert, meaning that reserves were being used to supply energy requirements and that load management procedures had been implemented. The last Level 3 alert was in 2013. According to the supply and demand report on AESO's website, the load on the grid at 5 p.m. was 10,643 MW. That's down significantly from last week, when a heat wave pushed demand to record highs on the grid, with loads in the 11,700 MW range.

Source: CBC News July 07, 2021 23:45 UTC