Confirmed: Thailand’s Domestic Oil Reserves Last 106 Days, B20 Diesel Sales to Start by April

The Ministry of Energy reported that as of 2 April 2026, Thailand has 106 days of domestic oil reserves and plans to begin selling B20 diesel within April. Eligible vehicles must have large diesel engines.

On 2 April 2026, the Ministry of Energy reported on Thailand's and international energy situation, diesel oil reserves and sales volumes, the status of the fuel oil fund, and related matters as follows.

1. Global energy situation and factors affecting prices.

On the morning of 2 April 2026, President Donald Trump stated that the U.S. is nearing its goal after destroying nearly all of Iran’s military and missile capabilities within 32 days. He emphasized that the U.S. has sufficient resources and no longer needs to rely on oil from the Strait of Hormuz, despite media noting no clear timeline for peace negotiations.

Meanwhile, the Iranian leader released an open letter to the American people, urging them to question the U.S. government's motives for waging war on Israel’s behalf. He affirmed that Iran’s actions are defensive and that Americans are not considered enemies. Following these statements, global crude oil prices remained highly volatile, with WTI crude reaching $103 per barrel and Dubai crude at $131 per barrel.

2. Domestic oil reserves and diesel production and sales.

• As of 2 April 2026, Thailand’s domestic oil reserves are sufficient for approximately 106 days of use, comprising 25 days of statutory reserves, 18 days of commercial reserves, 33 days of oil in transit, and 30 days of confirmed supplies.
• As of 31 March 2026, diesel production reached 78.73 million liters, while sales totaled 82.54 million liters.

3. Domestic and international retail fuel prices and the fuel oil fund status.

• According to PTT prices, diesel (B7) costs 44.24 baht per liter, gasoline (E20) 38.25 baht, gasohol (95) 43.25 baht, and gasohol (91) 42.88 baht.
• Comparing Thailand’s retail fuel prices with ASEAN countries, Thailand’s average gasoline price is 43.25 baht per liter, while prices in the Philippines, Cambodia, Myanmar, Laos, and Singapore range from 52.22 to 86.16 baht per liter. Diesel prices in Thailand are 44.24 baht per liter, compared to 50.36 to 107.20 baht per liter in Malaysia, Vietnam, Cambodia, Laos, the Philippines, Myanmar, and Singapore.
• As of 2 April 2026, the fuel oil fund deficit is 48.217 billion baht, with daily diesel subsidies of approximately 1.442 billion baht.

Additionally, Bangchak Corporation has produced its first batch of 35,000 liters of B20 diesel, distributing it through depots and preparing to sell it at gas stations within April. Eligible vehicles include those with large diesel engines such as trucks, buses, and industrial machinery. Using B20 diesel supports domestic energy resources, reduces import dependence, adds value to Thailand’s agricultural sector, and aligns with energy development goals considering security, economic, and environmental factors.