- For lore about oil refineries, see Oil refinery.
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These large steel-shod buildings are designed to refine raw oil for use in the construction and maintenance of the Alliance fleets as well as the creation of unconventional war machines. Like the Shipyard, a Refinery is built along the coastline so that Tankers can deliver their cargo directly to its doors. A Refinery allows oil to be processed with far greater efficiency, increasing the amount of usable oil garnered from every load of crude.
- If you own at least one Oil Refinery, an additional 25 oil will be added to your stockpile every time an Oil Tanker drops off harvested oil. Tankers can also drop off oil here instead of at the Shipyard. Oil Refineries must be built on a coast.