Hydro-Quebec prepares for solar storms:
Hydro-Quebec spent nearly U.S.$900 million adding series compensators to its 735 kV grid, making it less vulnerable to tremendous solar storms predicted by astronomers to hit Earth in the next 18 months. In 1989, a geomagnetic storm triggered the collapse of the Hydro-Quebec power grid, leaving 6 million Canadians without power. The exceptionally intense storm caused seven static compensators of the 735 kV network to trip or shut down. Automatic load-shedding was not able to offset the loss of 9,500 MW of generation and the rest of the system collapsed within seconds.