You can probably argue that minimizing resource consumption, or at least keeping it below a certain level, is necessary to make Free Software available to the majority of people in the poorer regions of the world, who can't afford to buy 64 GB of RAM. But as far as I know this is not a general problem with Free Software.
I wouldn't be surprised if some kind of "sustainability" project would appear on the list, although I am not sure what it would mean in the context of Free Software.