Iran's capital and outlying provinces have faced rolling power blackouts for weeks in October and November, with electricity cuts disrupting people's lives and businesses. And while several factors are likely involved, some suspect cryptocurrency mining has played a role in the outages.

Iran economy has been hobbled for years by international sanctions over its advancing nuclear program. The country's fuel reserves have plummeted, with the government selling off more to cover budget shortfalls as wars rage in the Middle East and Tehran grapples with mismanagement.