President Gabriel Boric said electricity was being restored, but the situation remained unstable. He blamed the nation’s power companies for not restoring power faster.

Electricity providers across Chile scrambled to restore service Tuesday after a sweeping blackout plunged 90% of the country into darkness, stranding commuters, knocking cell service offline and paralyzing businesses and daily life.

A large power outage struck most of Chile on Tuesday, resulting in a curfew until Wednesday morning for the areas hit by the blackout.