"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
blockchain and bitcoin are two different things. Bitcoin can hardly be environmentally friendly, but blockchain can be so very easily. Just see PoS concepts and coins, they don't require much additional energy to be wasted.