Spain's grid operator denied on Wednesday dependence on solar power was to blame for the country's worst blackout, while Prime Minister Pedro Sanchez came under increasing pressure to explain what went wrong.

Spain’s grid operator has denied that solar power was to blame for the country’s worst blackout, as Prime Minister Pedro Sanchez faces increasing pressure to explain what went wrong. Red Electrica de Espana (REE) on Wednesday said the source of the outage had been narrowed down to two separate incidents of loss of generation in substations in southwestern Spain,

The major power outage affecting Spain and Portugal was likely caused by failures at solar farms in the southwest of the country, according to REE. Spanish grid operator REE identified two incidents of lost power generation,