ECONOMYNEXT – Spain, Portugal and part of France have been hit by a cascading power failure, reports said, in the style that hits Sri Lanka from time to time leaving the entire island without power for several hours.
The power failure has brought trains, traffic and activities of ordinary people to a standstill, throughout the Iberian Peninsula, reports said.
“Tension has now been recovered in substations in several areas of the north, south and western peninsula,” Red Electra, the Spanish power company said in an x.com post.
“We continue to work with all resources to ensure the replenishment of the supply as soon as possible throughout the territory.”
Actualizamos información:
➡️En estos momentos se ha conseguido recuperar tensión en subestaciones de varias zonas del norte, sur y oeste peninsular.
➡️Seguimos trabajando con todos los recursos para lograr la reposición del suministro lo antes posible en la totalidad del…
— Red Eléctrica (@RedElectricaREE) April 28, 2025
Sri Lanka’s last cascading failure linked to a high share of intermittent renewables (outside of large hydros which have rotational inertia) on a weekend, when plants with inertia was low when a disturbance occurred in the grid.
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However earlier failures in Sri Lanka have been linked to weak links in the power grid failing and shutting off large amounts of supply.
The Spanish and Portuguese grids are linked.
Spain also has high share of renewables but it has an advanced grid compared to Sri Lanka and has decades of experience in dealing with intermittent renewables.
The failure came after the company announced a few days earlier that it was running entirely on renewables from April 16, reports said.
There has been no information on the cause of the failure. Initial reports suggested that a fire that put out a high tension like in French grid could have been the ‘primary failure’ that triggered the cascade.
A cyber attack has not been ruled out, reports said.
Later reports suggested that ‘induced atmospheric vibration’ involving oscillations triggered in high tension lines due to high tempertures, could be the primary failure.
In developed nations, cascading failures are rare.
Unlike in Europe, where the power supply is reliable, almost all businesses and many homes in Sri Lanka have stand-by power either through generators or batteries due to a past history of deliberate power cuts for ‘demand management’. (Colombo/Apr29/2025)