The inhabitants of Iceland are the first to consume more electricity on mining cryptocurrencies than on household needs. Perhaps it was possible due to magma-fuelled power plants. Volcanoes supply the island with a cheap and copious form of renewable energy.
Read the details in the article of Coinidol dot com, the world blockchain news outlet:
https://coinidol.com/iceland-a-new-dream-island-for-bitcoin-miners/