More than 51,000 households were left without gas and 1,500 apartment buildings had no winter heat in Moldova's Moscow-backed separatist enclave, authorities said on Monday, as Moldova and Russia traded blame for an escalating energy crisis.

By Iulian Ernst in Bucharest With no natural gas and insufficient electricity produced from its limited coal reserves, the pro-Russian separatist Transnistria region in Moldova has chosen to live under a self-imposed energy blockade after Ukraine discontinued the transfer of Russian gas to Europe (including Moldova) on January 1,

Authorities in Moldova's separatist Transdniestria region on Sunday cut off gas supplies to several state institutions as a deal allowing Russian gas to transit through Ukraine comes to an end at the close of the year.