Your question is not specific. What do you really mean by "consuming energy", electrical energy or in a sense of efforts on transacting? If what you meant is the latter part (nasagot na kasi ng iba about sa electrical consumption eh) then definitely mas convenient gamitin ang btc as a form of payment because its fast and reliable, all you just need is internet connection and you are ready to go . In my experience, I can buy a load without even going outside, you can also use it for paying different kinds of bills.

(But kung wala kang internet and pc/smartphone which is a basic requirement to access crypto then mataas ang chance na taliwas ka sa opinion ko)