Nice concept! The game works well when broken down into the 3 objectives you laid out. I like that it has an environmentally positive message and it fits the theme very well! The visuals are great too, very simple and easy for the player to distinguish what they're looking at.
Of course, it still needs a bit more polish to be a complete game. I noticed you can exploit the resources you pick up by spamming 'e', so I had everything I needed to build the wind turbines very quickly. The prompts for picking up the resources are a little unreliable too, you have to position yourself the right way to get the prompt. Also, when you need to move your mouse and click something, I find that it clashes with the UI a bit. Ideally, you want to freeze the player's ability to look around when browsing an inventory screen for example.
All that said, most of us in this game jam have things to fix and polish up post-jam, so don't sweat it. I think for the week that you had, this is pretty impressive and you should continue to add to it and polish it up. It will make a nice portfolio piece.