Volcanic energy is a renewable geothermal energy. So it is technically renewable and it can be used for Bitcoin mining also as it seems. It is going to be a first experience with volcanic energy in this field I guess. El Salvador is still continuing to be one of the firsts to take brave actions. I hope that this can be helpful for the environment to stay better and then maybe the other countries would also start preferring this way.
El Salvador is setting examples for the world, be it legalizing bitcoins, installing atms, using renewable energy for bitcoin mining or anything. They are taking risks and I hope other countries will follow them if they get successful.