Funny, I just build a station just like that, Ore, Silicon and Methane and the first processing of it. Importing energy cells however, I find placing those things a hassle.
Hello captain collins! I have a problem with my station and I would like to know if you know why it happens to me. I can't continue with the construction because I don't have energy cells and I've been waiting for days for the construction ship to get them, but nothing happens... could you help me?
Check if you still got enough money in the construction fund. If that doesn't help, you will need to haul the cells yourself to the construction site with a trader.
You make graphene with methane and energy cells with the graphene production module. If you have miner to bring the methane and solar panel (or transporter to bring energy cells), you don't need any funds. You don't need money to 'buy' from your own ships. If you want to directly buy the graphene, you need funds to buy it from other factions. But not if your own transporter bring it.