Couldn't get the nodes to work... Maybe make some popups with a little tutorial when you first enter the game
Has potential for a strategic game, liked the mechanic where you are limited by region to place the nodes. Needs some polish graphic-wise, It'd be cool if the generator was actually a sprite of a generator, etc, also some sound effects... And maybe a more intuitive visual indication of how much energy you need to run what, how much of this resource is being mined
Anyways, lots of suggestions but of course the time is limited and I think you created a cool idea for a strategic game in that time, specially for a first timer!
Good job