‘Blackouts can happen anywhere’: how power systems worldwide can collapse

After Europe's biggest blackout in over 20 years, experts warn that while such incidents are rare, no grid is infallible

Europe's biggest blackout in over 20 years on the Iberian peninsula unleashed hours of chaos for people in Spain, Portugal and parts of France earlier this week. But in the aftermath it has raised a common question for governments across the continent: could the same happen here?

Europe's political leaders and energy system operators have given assurances that such blackouts are extraordinarily rare, and that European power grids are some of the most stable in the world.