2 ms·You need not waste electricity to maintain a consensus network. For those who made it to the end.by RichardHeart 5y agoYou need not waste electricity to maintain a consensus network. For those who made it to the end.UncleMeat 4y agoBTC spends a lot of electricity to write data. Writing is a pretty key component of a hard drive or a harder drive.recursive 4y agoHowever, it just so happens that all the most successful ones do.