The report by digiconomist has been criticized and critiqued over its accuracy. Nonetheless, this is a matter that should be taken seriously and I don't believe it is FUD. As a true believer in Bitcoin and cryptocurrencies, I believe this is a problem that needs to be solved no matter the accuracy of digiconomist. Whether it is completely accurate or not, the energy used to min bitcoins is too much. Recently, they did an experiment in Canada trying to use hydro power, but it didn't work. The mining farms needed too much energy.

Bitcoin won't be sustainable if it is using this much energy. A project like Cardano or IOTA will pave the way. Proof of Work might be taken over my Proof of Stake. Again, this is not FUD. This is just a supporter of Bitcoin acknowledging a potential problem to future success.

Other solutions include countries moving to renewable energy altogether. This will be necessary with or without cryptocurrencies.

Thanks for your article.