Supplemental Info:

Reports from multiple sources, including real-time social media and news outlets, confirm a "desconexión total" (total disconnection) of the Sistema Eléctrico Nacional (SEN). This has left much or all of the island without power.

Key Details (as of now)

Cause: Authorities (Unión Eléctrica / UNE) have stated that the exact cause is not yet known or publicly detailed. This fits the pattern of recent failures linked to fuel shortages, aging infrastructure, and mechanical issues at thermoelectric plants.

Impact: Widespread or island-wide darkness affecting ~10–11 million people. Havana and other areas are reported as dark. This comes amid the ongoing energy crisis with prolonged daily blackouts (often 18–22+ hours in many places).

Restoration: No confirmed timeline yet. Efforts are presumably underway, but full recovery from such collapses has historically taken hours to days.

This is the latest in a string of severe grid failures in 2026. The system remains extremely fragile due to chronic fuel shortages and outdated equipment.