Great work!
I'm not much into tower defence games but I think a good tower defence game is a _puzzle_ game, rather than a grind fest. The ones I try usually are mostly automated towers and you end up having to just collect the coins as the player, and only have agency in spending them and putting a new tower somewhere clever (and if you choose wrong well sucks to be you!)
Here I really felt like I was solving a puzzle LIVE, and the idea of having a base with a "main beam" and using that to create a laser path, meaning I could power only parts of my "infrastructure" at once, is awesome! I truly had to solve issues on the fly and manage where to send power. It was genuinely fun and I think this could actually work as a game!
Congrats to you!