South Korea is proceeding cautiously on the timing of its strategic oil stockpile release under the International Energy Agency (IEA) framework, with officials citing the possibility of a global oil supply crisis as early as August 2025. The decision reflects Seoul's intent to preserve its reserve release as a last-resort option rather than deploy it prematurely.

Background: The IEA Commitment

Earlier this year, Seoul pledged to release 22.46 million barrels of oil from its strategic reserves by 9 June as part of a coordinated plan adopted by 32 IEA member nations. The joint release was designed to stabilise global oil markets disrupted by the US-Israeli war against Iran that began in late February.

What Seoul's Deputy Minister Said

Yang Ghi-wuk, Deputy Minister for Trade, Industry and Resources Security, told reporters at a regular press briefing on Tuesday that the government is carefully calibrating the timing of any release. He described the reserve option as a 'final' card, to be used only in the worst-case scenario.

'Concerns over (a possible oil crisis) have somewhat eased recently with news that the situation in the Middle East may get better, but until just a few days ago, there have been projections that oil supplies may suffer disruptions if the effective closure of the Strait of Hormuz continues for longer,' Yang said.

He added that South Korea does not feel an acute need for a release at present, crediting the country's efforts to secure alternative supplies and a crude swap arrangement with private firms. He also clarified that while Seoul intends to adhere to the IEA plan 'as much as possible,' the agreement carries no mandatory penalty for timing deviations: 'The timing and the way of the release can differ by country,' he said.

IEA's Red-Zone Warning

IEA Executive Director Fatih Birol warned last week that commercial oil inventories globally are depleting at a 'very fast' pace, cautioning that oil markets could enter a 'red zone' in July or August. The warning has added urgency to member-nation deliberations over when and how aggressively to deploy reserves.

South Korea's Supply Diversification

The South Korean industry ministry has reported that the country's crude oil supplies are relatively stable for now, with approximately 85 per cent of pre-Iran war supply volumes secured for use through July. Notably, Seoul has sharply reduced its dependence on Middle Eastern crude during the May–July period.

The combined share of oil supplies sourced from regions outside the Middle East reached 51.5 per cent for that period, up sharply from 30.9 per cent recorded during the same window last year. Shipments from North and South America rose to 35.6 per cent from 23.1 per cent, while supplies from Asia climbed to 7.4 per cent from 5 per cent. Shipments from Africa expanded significantly to 8.3 per cent from just 2.2 per cent.

What Comes Next

The trajectory of the Strait of Hormuz situation and any further IEA guidance will likely determine whether Seoul activates its reserve release before the 9 June deadline or seeks a revised timeline. With global inventories under pressure and the August risk window approaching, the coming weeks are critical for both South Korean energy policy and broader IEA coordination.