Not sure what evidence you’re looking for or how I can present it. I was a gnome user for a long time and it just sips power much more than all other distros. I don’t know, look it up online? Read some posts from Reddit? Lol There was talks about improving it and it looks like it HAS improved, hence my Ubuntu comment. I believe Wayland has something to do with it, too, since it scales hi res screens better than xorg