Ukraine's state electricity company has imposed limits on electricity supplies for Crimean consumers due to a "power crisis" on the mainland.
Ukrinterenergo also threatened to cut all supplies to the region if these quotas were breached.
Crimea, which was annexed by Russia in March, still depends on Ukraine for around 80% of its electricity supplies.
"If the limits are not adhered by the consumers of Crimea, the company will be forced to completely turn off supply lines to the peninsula," the firm said in a statement.
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