That's true, but also the algorithm plays an important role. Do we really need ASIC farms in order to secure the network? Ideally, and how it was thought at the beginning, the individual nodes should also be responsible for its validation, using consumer grade hardware.

There are greener algorithms like the Monero's. Also Nano uses something called "block lattice" in order to secure the network, with close to 0 required energy

@tired_n_bored @Deestan I think monero made the right choice of making ASICs useless and be mined on traditional PCs... Anyone can join the mining at anytime what makes mining farms (like the ones with ASICs or GPUs) way less common