Cool platformer - interesting mechanics, gravity switch is a classic and I think you added more to it with things like the solar panels and the level design was very clearly quite thought out.
I'm kind of bad at platformers, and eventually got stuck on level 2 which may be a skill issue but there did feel like there was some like angle gravity flip jumps through gaps that were pretty hard for level 2 :P Possibly just a skill issue though
Music was really nice, as is the art, i like the little character, nice pitch also!