The reason it puts downward pressure is because large scale miners are forced to sell all their BTC almost immediately, if not pre sell future mined coins at a locked price (Hedgy.co solving this issue for them) So if people are forced to mine and sell every bitcoin instantly it applies heavy downward market pressure on the exchanges. Look at the volume in China, most of this comes from miners.
If electricity wasn't too bad, and/or the price was significantly hire per BTC the pressure to liquidate and pay bills wouldn't be there as much, leading to less (immediate) downward pressure on the markets/price.
If electricity wasn't too bad, and/or the price was significantly hire per BTC the pressure to liquidate and pay bills wouldn't be there as much, leading to less (immediate) downward pressure on the markets/price.