I actually address this point in my post: <i>&quot;Many&#x2F;most miners use hydroelectric power because competition compels them to use cheap renewable energy instead of other polluting power sources such as coal power plants&quot;</i> examples:<p>BitFury: <a href="https:&#x2F;&#x2F;www.businesswire.com&#x2F;news&#x2F;home&#x2F;20151211005837&#x2F;en&#x2F;BitFury-Launch-Energy-Efficient-Immersion-Cooling-Data" rel="nofollow">https:&#x2F;&#x2F;www.businesswire.com&#x2F;news&#x2F;home&#x2F;20151211005837&#x2F;en&#x2F;Bit...</a><p>KnC: <a href="http:&#x2F;&#x2F;thenodepole.com&#x2F;2015&#x2F;06&#x2F;04&#x2F;kncminer-to-build-new-20mw-greenfield-datacenter-in-the-node-pole&#x2F;" rel="nofollow">http:&#x2F;&#x2F;thenodepole.com&#x2F;2015&#x2F;06&#x2F;04&#x2F;kncminer-to-build-new-20mw...</a><p>Therefore your worry about CO₂ emissions is misplaced.