Any feedback is highly appreciated. If it's used, I might make a forumpage about it.
Couldn't understand it, sorry. But a forumpage with more information about how to use would be nice if you have the time to spare.
Might want to clean up your language a bit, to make a more serious impression

I just made my own spreadsheet with mining profits, electricity cost, etc. that I can experiment with.
But I did not do a forward projection like you did (if I understood that correctly), which would be nice to have.