Mining process requires high consumption of electricity, as Mark Coppock said: "Bitcoin is far more power intensive than Ethereum when looking at a single transaction, at 163 kilowatt-hours (KWh) versus 49 KWh. That means that a single Bitcoin transaction could power the typical U.S. household for roughly 5.5 days as compared to the 1.5 days of a single Ethereum transaction." So can it be cheaper?

Check article on medium: https://cryptocurrencyhub.io/how-energy-premier-can-help-miners-to-get-better-deals-on-electricity-supply-f378d4cb7dcc