Bitcoin is so power hungry it uses only marginally less electricity than the entire country of Poland,Water is used to cool the gas and coal-fired plants that provide that much of our power. And large amounts of water are lost through evaporation from the reservoirs that supply hydroelectric plants. Every Bitcoin transaction uses, on average, enough water to fill “a back yard swimming pool”, a new study suggests. The figure is due to the water used to power and cool the millions of computers worldwide Bitcoin relies on. Is Bitcoin systems good for the climate?