Oil Storage in Korea: Bonded Tanks, KNOC Joint Stockpiling and Finance

01 · Why Korea

In 2026 the case for Korean storage is supply continuity, not only geography

Korea has long promoted itself as a Northeast Asian oil hub. KNOC's project page describes the aim as making Korea a central hub for energy logistics in Northeast Asia by building commercial storage, separate from its strategic stockpile bases: one terminal at Yeosu, next to what KNOC calls Korea's second largest petroleum and refinery cluster, and one at Ulsan, which it calls Korea's largest port for petroleum and chemical logistics. The pitch to a Middle Eastern producer or trader is simple: put barrels close to the refiners of Korea, China and Japan, and sell from there.

The events of 2026 added a second argument. On 11 March 2026 the IEA announced that its member countries would make 400 million barrels of emergency stocks available, after exports of crude and products through the Strait of Hormuz fell to less than 10% of pre-conflict levels. MOTIR's 1 April 2026 press material describes emergency imports of UAE crude routed to avoid Hormuz risk, after an alternative UAE loading port had been suspended following an attack and then partly reopened. For a seller, a cargo already sitting in a Korean tank could still be delivered when the sea lane could not be used. For a buyer, it was supply that did not depend on a lifting being possible that week.

That is the energy-security logic behind storage in Korea. It does not make storage profitable by itself: tank fees, financing cost, quality upkeep and the forward price curve decide that. What storage changes is optionality and timing, and, if documented well, the ability to raise finance against the cargo while it waits for a buyer.

Sources [3][4][5]

02 · What exists

Yeosu and Ulsan North Port are operating; Ulsan South Port is still a plan

Much of what is written about the Korean oil hub mixes plans from 2008 with what was actually built. KNOC's own project page separates them. Two commercial terminals operate. A third phase is at the business-plan stage and has been reshaped around low-carbon projects.

Note the oil capacity at Ulsan North Port: of 5.75 million barrels in total, KNOC lists 1.70 million barrels in 12 oil tanks and the rest in three LNG tanks. Older articles that quote Ulsan as a large crude terminal predate that design.

Sources [5]

03 · Options

Each storage route gives a lender a different kind of proof

A producer or trader thinking about Korea usually has four routes in mind. They are not equivalent from a finance point of view, because each leaves a different paper trail showing who owns the oil and who can order it out of the tank.

Bonded status is not a fourth kind of tank; it is a customs status that a site has or does not have. The question to ask of any terminal is therefore two-part: who operates it, and under which customs designation the tank you will use sits.

Sources [1][5][6][8]

04 · KNOC joint stockpiling

Joint stockpiling oil is the owner's to sell, but Korea's priority purchase right comes first in a crisis

KNOC has run international joint stockpiling since 1999. In its words, it attracts and stores oil of producing countries and others in its stockpile facilities, raising Korea's reserve level without the cost of buying the oil, earning facility fees, and giving producers a logistics base in Northeast Asia. Partners named are national oil companies and international traders. The oil is not counted in KNOC's own government stock, and it is not KNOC's oil.

What Korea gets in exchange is a priority purchase right in an emergency. A 2026 MOTIR audit spells out how that works in practice. The right rests on the joint stockpiling contract between KNOC and the foreign company, not on a statute. During the 2026 supply crisis the conditions to exercise it were met, but action was delayed, and 900,000 barrels of a Kuwaiti national oil company's stored crude were exported. The audit found no breach of rules, criticised the delay, and asked KNOC to put in place an effective arrangement, such as requiring contract partners to notify KNOC in advance when they plan a sale abroad.

The same year shows the route working as intended: MOTIR reported that 2 million barrels from the joint stockpiling deal with ADNOC were discharged into KNOC's Yeosu base on 25 March 2026, and that 2 million barrels of UAE joint-stockpile crude held in Korea had been delivered to Korean refiners.

Sources [1][2][3]

05 · Bonded areas

Korean bonded areas let oil wait as foreign goods, within set time limits

Under the Customs Act, foreign goods must be kept in a bonded area (with limited exceptions), and bonded areas are of three kinds: designated, licensed (patent) and comprehensive. A bonded warehouse is a licensed bonded area for foreign goods or goods awaiting clearance. While the oil stays there as foreign goods it is not treated as imported; duties and taxes are settled when it is declared for import. If foreign goods in a bonded area are lost or destroyed, duty is collected immediately from the operator or keeper, unless the loss was caused by disaster or destruction was approved in advance by customs.

For re-export trading, the Petroleum and Alternative Fuel Business Act matters as much as the Customs Act. It defines an 'international petroleum trading business' as either trading petroleum in a bonded area, or making a petroleum product by blending in a comprehensive bonded area designated by the Korea Customs Service, in the manner set by Presidential Decree (including through a contractor operating a site there), and trading that product in a bonded area. The blending business must be reported to the minister; pure trading in a bonded area need not be, unless the oil is quality-adjusted under Article 26.

Importing into Korea is a different licence: petroleum export-import business requires registration with the minister, with exemptions such as export-only business, and crude importers carry a stockholding obligation. A foreign seller that only stores and re-exports under bond generally sits outside those duties; the Korean buyer that imports does not.

Sources [6][7]

06 · Finance

A tank becomes collateral only when someone independent can say whose oil it is and who can release it

Commodity lenders finance stored oil in a handful of ways. None is specific to Korea, but Korean law decides which security interest works. Two Korean instruments are relevant. A warehouse receipt under the Commercial Act is issued by the warehouse operator on the depositor's request and must state the type, quality and quantity of the goods, the depositor, the storage place and fees, and any insurance. Handing it to the person entitled has the same effect as handing over the goods, and goods pledged by warehouse receipt can be partly released before repayment only with the pledgee's consent. Separately, a registered security over movables is open to corporations, foreign corporations included, over goods identified by type, storage place and quantity; it takes effect on registration and ranks by registration order, but cannot be registered over goods for which a warehouse receipt or bill of lading has been issued.

The practical problem with oil, which UNCTAD described in 1996 and which still holds, is that terminals run on throughput and commingle products, oil quality changes with time, and a strategic commodity can attract government intervention. Traditional warehouse receipts are therefore hard to use, and lenders rely on frequent independent inspections that reconcile physical stock with pledged stock and with other owners' stock.

The tools below are common market practice. Their exact form depends on the lender, the terminal and Korean counsel.

Sources [8][9][11]

07 · Flow

Ten steps from the loading port to repayment

The sequence below is how a stored-cargo finance usually runs. Most failures happen at the joins: a B/L issued to the wrong party, a tank acknowledgement signed after drawdown, or a release instruction that nobody was authorised to give.

1. Before loading: agree the storage contract, the lender's term sheet, the terminal's form of acknowledgement and the inspector's mandate. Confirm the tank's customs designation and storage period.
2. Loading in the producing country: independent inspection of quantity and quality; certificate of origin; B/L made out so that it can be endorsed to the lender or its order.
3. Voyage: insurance in place with the lender as loss payee; vessel and route screened; documents sent to the lender or its bank.
4. Arrival and discharge in Korea: ullage and sampling by the inspector at the ship and the shore tank; outturn report; customs entry into the bonded area recorded.
5. Title and holding evidence: terminal acknowledgement or warehouse receipt in favour of the lender; security registered where that is the chosen route.
6. Drawdown: the lender advances against the inspected quantity at the agreed advance rate, net of fees and price buffer.
7. During storage: periodic inspection and stock reconciliation; marking to market; hedge results paid to the controlled account; watch the customs period.
8. Sale: the buyer is approved; the buyer's L/C or SBLC, or a prepayment, pays into the lender-controlled account.
9. Release: the lender instructs the terminal; customs export or import declaration filed; loading or delivery inspected.
10. Repayment: proceeds repay the loan; surplus to the owner; security and acknowledgements released in writing.

Sources [6][8][11]

08 · Checklist

Answer these before the first cargo sails

Producers and traders who use this list early tend to spend less time renegotiating storage contracts once a lender is involved.

• Which site and tank, which operator, and what customs designation: bonded warehouse, comprehensive bonded area, or none?
• Storage period that customs allows for that site, compared with the expected holding time and the loan tenor.
• Whether blending or quality adjustment is planned, and if so whether the international petroleum trading report is needed.
• Who will import if the oil is sold into Korea, and whether that buyer is a registered importer.
• For KNOC joint stockpiling: how the priority purchase right is triggered, priced and paid, and what notice of foreign sales the contract requires.
• Form of title evidence the terminal will sign: holding certificate, warehouse receipt, or registration of a security over the stock.
• Independent inspector appointed for loading, discharge and periodic stock checks; who pays and who receives the reports.
• Rules for commingled tanks: reconciliation frequency and how shortfalls are shared among owners.
• Quality specification at discharge and limits for deterioration during storage.
• Hedging plan and who controls the hedge account.
• Origin and vessel documents ready for the lender's sanctions screening.
• Insurance in tank with the lender named as loss payee.
• Release procedure in writing: who instructs, on what document, and the lender's consent for partial releases.
• Exit route: identified buyers and the payment instrument for the sale.

Sources [2][6][7][8][11]

09 · PentaBay

From energy trade to finance: how PentaBay approaches this

PentaBay is developing a Korea storage hub that would store Iraqi-origin crude and petroleum products in Korea and supply buyers in Asia. The starting point is the problem described above: in 2026 sellers and buyers found that a purchase could be agreed but not lifted. Oil already in Korean tanks answers part of that problem for both sides. PentaBay works with a local partner in Iraq.

Storage would use commercial terminals and tanks owned by small and mid-sized companies, not KNOC joint stockpiling or refinery tanks; the longer-term aim is purpose-built new storage. Products are crude oil and petroleum products such as naphtha and fuel oil. For crude, PentaBay designs the structure for parcels of at least 2 million barrels, the size of the joint-stockpiling cargoes MOTIR reported in 2026. Product volumes are agreed case by case.

The finance side is a structure under discussion, and nothing is confirmed. The lender would be a Korean securities firm; the borrower, a special purpose company (SPC) that the cargo owner sets up in Korea. Whether finance is provided, and on what terms, depends on the lender's own review and approval. Two forms are being considered. The first is a loan secured on crude or products held in storage in Korea, built from the tools in section 06. The second is securitisation of future sales receivables: under Korea's Asset-Backed Securitization Act, securitised assets can include receivables that will arise in the future, the transfer must meet true-sale conditions (sale or exchange, transfer of the right to benefit and dispose, no right of return, risk passing to the transferee), and originators are limited to listed institutions and to externally audited companies, including comparably audited foreign corporations, that meet the Financial Services Commission's criteria. Custody and collateral management of the stored oil would sit with a separate trust or custody company appointed on the securities firm's side; this is under discussion.

PentaBay's role is to arrange and advise on the financing, and to act as a seller of the cargo. Stored oil would normally be re-exported under bond to buyers in Asia. In special cases the Korean government exercising a priority purchase right could be discussed, but that would require a government decision and a contract; it is not an existing right. Final buyers vary by transaction.

Where Iraq or another crude-owning country wishes, the funds could be linked to Korean EPC+F, meaning a project in that country built by Korean companies under an engineering, procurement and construction contract that comes with financing, with payment made in Korea. In that kind of structure, official export credit, which KEXIM describes as direct credits to foreign buyers or cover for private lenders on OECD Arrangement terms, is one possible part. This is a possible structure only.

Sources [3][4][10][12]