Quote from Uncle_Ho:
Why does the spread cost that much to carry? Wouldn't you just hold nat gas inventories then wait and sell a future contract against it, or does it cost that much to hold nat gas in storage for months?
Storage operators capture the majority of that spread. As a futures investor, you cannot capture the differential as you cannot touch the physical. Winter always carries a premium to the summer as part of the economics of storing gas, and the fact that winter is the peak demand season of gas.