IAAESS (I am an energy system scientist).
These are four of the most prominent *climate* scientists in the world. But not one of them has published a single paper on energy systems (as far as I can see in their online lists of publications). There is a whole field of science concerning integration of intermittent renewables, and these guys have never demonstrated any expertise in this area.
I'm sure all four of them get extremely annoyed when scientists in fields completely unrelated to climate change spout climate skeptic nonsense all over the media (I do too). Now they are guilty of the exact same sin.