The Iberian Peninsula’s widespread blackout raises questions about the resilience of the electric power infrastructure in the two countries — and to an extent, the rest of Europe.

Spain’s blackout highlights growing grid risks as renewable energy expands and storage infrastructure lags behind.

In response to a power outage in Spain and Portugal, the U.S. Department of Energy’s secretary Chris Wright tried to blame the use of solar and wind energy, though the cause of the blackout is not yet