How can I make a energy system

Hi, I want to make a game where you have a base with electricity. I want to make an energy system with generators, consumers and batteries. How can I do it?

 

Hello there. It sounds like you're trying to build your magnum opus while having zero experience. Would you like information on how to learn Unity? [insert Clippy gif here]

But seriously, it does sound like you're only just starting out, so chances are you're nowhere near ready to tackle this task. Before you can dive into making your cool ideas, you have to know what you're doing. Spend some time learning the engine and how to write code, and consider revisiting your idea once you've got a more solid base of knowledge to build on.