I agree with the influences everyone else saw in the Pilot, but the main"rip-off" I could see was from the Hunger Games movie. It was almost like the premise had been floating around for a while, & when HG hit, someone pitched-
"picture a long-haired girl in her mid-to-late teens. She's dressed in a leather jacket with high boots & has a bow-like weapon strapped across her back. Now picture her hunting in the woods so she can provide for her family, Then, suddenly, her sibling is taken by the evil, totalitarian government, so she has to use her skills to save her entire way of life, which may turn out to be a lie.
BTW...America is coming around to the "We're not horrified with the kids killing kids" idea, so...there's that.
Now, see if we can shoe-horn your whole "post-Apocalyptic, World Has No Way of Producing Power" idea to explain why she has to hunt & has some skills in something other than texting, but since there's no texting, let's give her a step-mom she can rebel against so every teen knows that no matter the situation you find yourself in, rebellion is the only way to cope.
Somebody call JJ."
Did I mention that I liked the Book of Eli influenced fight scenes?