Iberian blackout analysis reveals policy failures

A detailed analysis of the 2025 Iberian Peninsula blackout indicates that policy decisions contributed significantly to the grid's vulnerability. The report highlights that excessive hardware disconnection under near-normal conditions exacerbated the situation. Grid operators faced challenges with voltage oscillations, partly due to an over-reactive system for dampening these fluctuations, which increased reactive power and voltage on transmission lines. The findings suggest that Spain's grid management policies allowed too many components to disconnect, increasing the risk of a cascading failure.