Indonesia has formalized one of the most aggressive biofuel blending mandates in the Asia-Pacific region, issuing a ministerial decree requiring all diesel users to transition to a 50% palm oil-based biodiesel blend, known as B50, by 2028.

The rollout follows a graduated pathway, building on the current B40 standard. Subsidized diesel is expected to reach the 50% blend threshold by 2027, while non-subsidized diesel may remain at B40 depending on available supply capacity. The accelerated push is partly driven by energy supply concerns linked to geopolitical tensions and is expected to reduce fossil fuel consumption by approximately 4 million kiloliters per year.

Authorities also project savings of up to 48 trillion rupiah (roughly $2.81 billion) in subsidies as a result of the shift, with the decree designed to give supply chains and infrastructure sufficient time to adapt across all diesel consumption categories.

Beyond road transport, the government is advancing ethanol blending in petrol, with non-subsidized fuel in Java set to include a minimum 5% ethanol rising to 10% by 2028, and is preparing to introduce sustainable aviation fuel from 2027, beginning with a 1% blend at Jakarta’s Soekarno-Hatta and Bali’s I Gusti Ngurah Rai airports.

As the world’s largest palm oil producer, Indonesia’s biofuel trajectory carries significant weight for global commodity markets and trade flows. How effectively the country executes this transition will matter well beyond its own borders, offering broader lessons on whether domestically anchored energy strategies can deliver both resilience and decarbonization.