Whether you're a Bitcoin maximalist, you think it's a giant scam or you fall somewhere in between, what's not up for debate is that Bitcoin mining uses a lot of energy. In order to keep costs as low as possible, miners look for cheap energy. The lower the energy costs, the greater the profit. And there are few countries with energy costs as low as they are in Iceland. The exploding demand for cheap power means Iceland has become a global hub for Bitcoin mining, and that's something Iceland's Prime Minister Katrín Jakobsdóttir is not happy with.