Over the last six months, reports of Chinese miners crossing the border to obtain cheap electricity from regions like Vietnam, Cambodia, Thailand, and Iran have abounded. According to a recent interview, Chinese miners have found extremely affordable electric prices ($0.006 per kilowatt-hour) in the oil-rich nation of Iran. However, managing to get thousands of machines over the Iranian border has proven to be far more difficult.
https://news.bitcoin.com/bitcoin-miner-recounts-struggle-to-obtain-cheap-iranian-power/