Can you believe it — it was 10 years ago today that North America was hit by a massive blackout.
A power outage that began in Ohio spread to eight states and most of Ontario, leaving more than 50-million people without power.
Some were without power for as long as four days.
Experts say the blackout tested Ontario’s aging electrical system and helped bring in mandatory reliability standards.
But while Hydro One says the possibility of a similar event occurring today is low, the grid is still vulnerable to cyber threats, human error and extreme weather.