"Im sure most of you have seen the news about Bitcoins energy consumption. For instance, in Iceland, more energy is used to mine Bitcoin than to power peoples homes and per day the global Bitcoin network now consumes more energy than Ireland. Hence, we chose to build on the Stellar network as it is the most environmentally friendly blockchain available. For comparison, a transaction on the Stellar network only uses 0.03 Wh whereas VISA uses 1.69 Wh per transaction. Clearly, the Stellar blockchain is the perfect technology partner for our platform."
Read morehttps://datafloq.com/read/amp/blockchain-can-save-climate-poseidon/5235?__twitter_impression=true
It is true that bitcoin mining can take considerable amount of energy ,but it is no where near the deceptive value quoted for banks or visa transactions, because they usually did not include the electricity cost used in running the back office.