https://blog.bitcoin.org.hk/bitcoin-mining-and-energy-consumption-4526d4b56186 https://blog.bitcoin.org.hk/bitcoin-mining-and-energy-consum... While some coal

https://blog.bitcoin.org.hk/bitcoin-mining-and-energy-consumption-4526d4b56186 https://blog.bitcoin.org.hk/bitcoin-mining-and-energy-consum... While some coal in landlocked and inaccessible locations is fired up in an environmentally unfriendly process to mine Bitcoins, most miners are powered by hydrogen dams, geysers and other geothermal energy sources that cannot be transported or stored.