Due to its power-consuming ASIC mining hardware, the Bitcoin network alone consumes as much energy as Switzerland. (Source)
It doesn’t have to be that way!
With Burst and its proof-of-capacity algorithm, miners use free space on their hard-drives to back up the network, consuming little more power than simply leaving the computer turned on. Here is the Best Cryptos List which serves as the best alternate for Bitcoin if you want to explore other crypto networks.