Dusk has become a particularly frenetic time in Havana, as Cuba prepared for a third night potentially without electricity after repeated failed attempts to restart the national grid.
Cuba's national electrical grid first crashed around midday on Friday after the island's largest power plant shut down.
Some neighborhoods had electricity restored in Cuba’s capital, where 2 million people live, but most of Havana remained dark.
Residents of Communist-run Cuba have grown used to sporadic blackouts, but Cuza questioned how authorities could have allowed the entire grid to go down.