I am developing a simple RTS...

I am developing a simple RTS game that revolves around resource collection on the moon. Your rovers mine regolith. Regloith is refined into building materials in refineries. Rovers and refinieries run on electricity made from solar panels. Rover count is limited by the number of people you have in your colony, which can only be increased by having more lunar landers arrive. Regolith, refined metal, electricity, and population count are our main resources. What does this economic system look like?