Algorand is carbon negative: https://www.youtube.com/watch?v=NykZ-ZSKkxM
Experiment away! But not with mega-scale proof-of-work projects that consume ungodly resource as a byproduct of securing the network (which is a financial problem in any case)
Are you familiar with any methods to achieve the same characteristics of Bitcoin but without PoW? Perhaps the energy is not the issue, perhaps it's your view to the importance of it.