Thailand’s Energy Policy Administration Committee has ordered a 2-baht-per-litre reduction in the ex-refinery price of B0, B7 and B20 high-speed diesel from November 1 to November 30, 2026, according to an announcement published in the Royal Gazette on October 28. The new rate is half the current 4-baht discount expiring October 31, reducing refinery-level support for diesel as global oil markets remain volatile.
Key Facts At A Glance
- The Energy Policy Administration Committee announcement was published in the Royal Gazette on October 28, 2026.
- The ex-refinery price of B0, B7 and B20 high-speed diesel will be cut by 2.00 baht per litre from November 1 to November 30, 2026.
- The current 4-baht-per-litre discount, in place since September 16, expires October 31, 2026.
- The Oil Fuel Fund Committee reduced the B20 diesel subsidy by 2.58 baht to 5.86 baht per litre, effective October 28.
- The B20 retail price was set at 33.50 baht per litre after the adjustment.
- Bangchak and PTT Station announced price reductions of 2.19 baht per litre for E20 gasohol and 3.69 baht per litre for B20 diesel.
The Royal Gazette on October 28, 2026, published an announcement from Thailand’s Energy Policy Administration Committee approving a 2.00-baht-per-litre reduction in the ex-refinery price of all high-speed diesel grades, covering B0, B7 and B20. The measure applies from November 1 to November 30, 2026, and is intended to mitigate the impact of the Middle East conflict on global oil price volatility, according to Thai Enquirer.
The November discount is lower than the current reduction of 4 baht per litre, which is set to expire on October 31. That 4-baht cut has applied to B0, B7 and B20 high-speed diesel since September 16, 2026, according to The Nation, citing government statements.
Oil Fuel Fund Adjustments
Separately, the Oil Fuel Fund Committee under the Ministry of Energy adjusted fund subsidy rates effective October 28. For B20 diesel, the subsidy was reduced by 2.58 baht to 5.86 baht per litre, bringing the retail price to 33.50 baht per litre. On the same day, Bangchak and PTT Station announced pump price reductions of 2.19 baht per litre for E20 gasohol and 3.69 baht per litre for B20 diesel. Publicly available reporting does not yet detail the full set of revised fund rates for other fuel grades.
Background On The Mechanism
Thailand first used refinery gate price controls in April 2026, when the Energy Policy Administration Committee invoked powers under a 1973 emergency decree on preventing fuel shortages to require all six domestic refineries to cut ex-refinery diesel prices, a step reported at the time as unprecedented. The committee has since revised the size and duration of the discount several times. Under the retail price structure published by the Energy Policy and Planning Office on September 18, standard high-speed diesel received a 4-baht-per-litre refinery discount alongside 8.62 baht per litre in Oil Fuel Fund compensation.
Officials have not publicly stated how the smaller November discount will be reflected in pump prices after October 31, or whether the Oil Fuel Fund will adjust compensation to offset the change. Publicly available details on the November measure remain limited to the Royal Gazette announcement as reported.
