Storage

Small Storage: Stores a couple items and can pump them out again.

Barrel ; Stores a big amount of a single item.type.

Warehouse ; You need storages full of items just for more storage.

Tank ; Stores a fluid and can pump it out again.

Silo ; A giant steel structure storing massive amounts of fluid.

Capacitor ; A large array of batteries with immense capacity. Has moderate power leakage.