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I believe most mining operations make use of hydro-electric power, simply because it’s much cheaper than burning off coal.

• lawn 9y ago
  Also practically free hydro-electric power which would otherwise be wasted.
  • Symbiote 9y ago
    That's not true at all. If the power were not used by Bitcoin miners, it would be used by other industries, and less more-expensive (coal etc) power produced by other power plants.