No, it&#x27;s proportional to the value of the coins used as reward. If there&#x27;s high turnover, that might lead to bitcoin&#x27;s price increasing and therefore higher energy costs. Also, high turnover may lead to higher fees, increasing the reward.<p>If the high turnover is done between trusted parties, or with settlement time, then it doesn&#x27;t matter to security. It needs to be people accepting large amounts from strangers&#x2F;untrusted counter-parties and giving stuff for it immediately. But usually, if I send someone $1000, they can wait 3 hours for security.<p>&gt;Also, when a bank charges me 1% for a wire transfer, they pay salaries from that money and some people buy food.<p>When a bank has lights on, burns fuel to send an armored truck around, etc, that&#x27;s also wasted.