Amid tight supply in international energy markets and persistently elevated diesel prices, the Group of Seven (G7) has finally rolled out a large-scale strategic reserve release measure.

In a G7 leaders' statement released by the French presidential office on Friday, October 2 local time, the G7 said it would coordinate through the International Energy Agency (IEA) to release 100 million barrels of strategic oil reserves, with the action set to begin "immediately" and continue for four months. During that period, G7 members and partners will front-load large-scale diesel reserve releases in the first 20 days. The G7 also pledged to avoid imposing export restrictions on energy and energy products among member states and called on other oil-producing countries not to adopt export bans that could further exacerbate market tightness.

After the G7 decision was announced, the decline in international crude oil futures widened notably during early U.S. trading on Friday. In early U.S. trading on Friday, U.S. WTI crude briefly fell below $88.10 per barrel, down nearly 5.2% intraday; Brent crude dipped below $98.50 per barrel, down nearly 3.8% intraday. Earlier on Friday, crude had already come under pressure from news that the G7 might further release strategic reserves.

Front-Loaded Diesel Release in First 20 Days as G7 Nations Avoid Energy Export Restrictions

According to the G7 leaders' statement published by the French presidential office, the core of the action is the coordinated release of a total of 100 million barrels of strategic petroleum reserves through the IEA, with the plan to start immediately and be completed within the next four months.

Notably, the G7 placed special emphasis on diesel supply.

The G7 leaders' statement said G7 members and partners will carry out "large-scale, front-loaded" diesel reserve releases in the first 20 days. At the same time, the G7 will continue discussions through the IEA in the coming days on whether to further increase the scale of diesel reserve releases if necessary.

The G7 also asked the IEA to monitor the impact of these measures on energy security and market stability and to submit a follow-up report before the 20-day period ends, including specific recommendations for replenishing strategic reserves in the future.

French President Emmanuel Macron told reporters after the meeting that the G7 hopes to push down fuel prices through this action.

Another important element of the measure is avoiding export restrictions. The G7 reiterated that members will not impose export restrictions on energy and energy products and called on other oil-producing countries to avoid embargo measures that could worsen market tightness.

This is also an important point that distinguishes the G7 action from a simple release of crude oil inventories — current market tightness is reflected not only in crude oil but also, and especially, in refined products such as diesel.

Before the Decision, Markets Already Traded on Reserve Release Expectations

In fact, earlier on Friday, international oil prices had already moved lower on news that the G7 might release more strategic reserves.

Reuters reported that European Union countries earlier that day discussed a French proposal under which European countries would release 50 million barrels of diesel while IEA member states would release another 50 million barrels of crude oil. The discussions took place before the G7 leaders' video conference.

The backdrop to this proposal is sustained U.S. pressure on Europe to release more emergency fuel reserves to ease rising fuel prices. Reuters previously reported that the U.S. government had pressured France and Germany to release emergency diesel stockpiles and was considering restricting U.S. diesel exports as a further means of pressure.

Therefore, the first round of oil price declines on Friday had already reflected market expectations that Europe might release diesel and the IEA might release more crude. After the G7 formally announced the 100 million barrel reserve release, selling intensified further.

The reaction in Europe's diesel market was particularly pronounced. The Financial Times reported that before the G7 formal decision was announced, European diesel prices fell nearly 6% on Friday as the market had already begun trading on expectations of a 50 million barrel diesel release.

After the IEA's Large-Scale Release in March, the G7 Adds Further Measures

This action also marks the second time this year that major global economies have tapped strategic petroleum reserves on a large scale through the IEA.

IEA member states agreed in March this year to release 400 million barrels of emergency oil reserves to counter supply disruptions caused by the Middle East war — the largest coordinated strategic petroleum reserve release in the IEA's history. IEA materials show that member states unanimously agreed at the time to release that batch of reserves to the market.

However, the previous 400 million barrel release plan did not advance fast enough to fully meet U.S. demands. As the Iran war continued, diesel supply tightened and fuel prices remained high, Washington has recently kept pressing Europe to accelerate the release of previously committed stocks.

The latest G7 statement explicitly asks the IEA to continue monitoring the implementation of the commitments made in March this year while, on that basis, releasing another 100 million barrels of inventories through the coordination mechanism.

From a market perspective, crude reserve releases mainly target crude oil supply expectations, while front-loaded diesel releases more directly target the current tightness in the refined products market. As a result, the diesel crack spread and diesel's premium to crude oil have become important indicators for judging whether this action can ease pressure in the energy market.

Trump Says It Will "Start Immediately" as Oil Market Waits for Supply to Actually Land

After the G7 decision was announced, U.S. President Donald Trump posted on social media welcoming the action, saying Europe had agreed to release "large" diesel stockpiles and that the process would "start immediately."

According to the formal G7 statement, the reserve release will indeed start immediately, but the 100 million barrels will not all enter the market in a single day. Instead, it is planned to be implemented through IEA coordination over the next four months, with diesel supply significantly front-loaded in the first 20 days.

This means that in the short term, the market is first trading on changes in supply expectations, while when and how quickly actual inventories are converted into spot supply will determine the subsequent direction of oil prices.

At the same time, the G7 statement still lists navigation through the Strait of Hormuz as a major risk to energy security, calls for the immediate and full restoration of navigational rights and relevant principles in the strait, and says it will continue to monitor changes in energy markets and adjust measures if necessary.

Therefore, while the 100 million barrel strategic reserve release significantly increases supply expectations for the coming months, whether it can continue to push oil prices lower still depends on the actual pace of releases, the degree of diesel supply recovery, and Middle East supply conditions and navigation through the Strait of Hormuz.