JAKARTA, INDONESIA / RankWire.AI / – Indonesia’s B50 biodiesel programme is projected to save about 170 trillion rupiah, or US$10.8 billion, in foreign exchange during 2026, the Energy and Mineral Resources Ministry said. The estimate reflects reduced spending on imported diesel after the national blend rose to 50% biodiesel. The rule covers diesel used in transport, industry, shipping, rail services and power generation. Palm oil provides the renewable component, while conventional diesel supplies the other half. The programme replaces part of Indonesia’s fossil fuel demand with domestically produced biofuel.
Indonesia started nationwide B50 use on July 1 and formally launched the mandate on July 9 in Karawang, West Java. It replaced B40, which had required a 40% biodiesel share since 2025. B50 mixes equal portions of fatty acid methyl ester, known as FAME, and petroleum diesel. The higher requirement directs more palm oil into the domestic fuel market. Distributors may use remaining B40 stocks through September while completing the national transition. Authorities introduced updated fuel standards and distribution plans before the rollout.
The Energy and Mineral Resources Ministry placed foreign exchange savings under B40 at Rp133.3 trillion. Its B50 estimate lifts that amount to Rp170 trillion for 2026. Officials also expect the mandate to cut fossil diesel use by about 4 million kilolitres. The government assigned Pertamina to manage blending and support fuel delivery across the national network. Pertamina also coordinates storage and supply for regions covered by the programme. The rollout includes technical controls for production, transport and retail distribution.
B50 mandate increases domestic biodiesel demand
Indonesia expects B50 to require between 16.7 million and 18 million kilolitres of biodiesel. That volume exceeds the 15.64 million kilolitres allocated under the B40 programme for 2026. The mandate will also use an estimated 15.2 million to 16.3 million tonnes of crude palm oil. These supplies cover road transport, industrial machinery, ships, trains and electricity facilities. The allocation spans several major fuel markets across the country. Officials based the volume range on projected nationwide demand under the new blend.
Government projections put added value for Indonesia’s palm oil industry at Rp23.49 trillion. The official assessment places employment support at about 2.1 million jobs across farming, processing, logistics and fuel supply. Officials estimate B50 can reduce carbon dioxide emissions by as much as 44.46 million tonnes. The comparable B40 estimate stood at 39.66 million tonnes. Those figures form part of the ministry’s national assessment of the higher blend. The calculations cover the full programme rather than one sector or region.
Fuel trials preceded national B50 rollout
Before implementation, the government tested B50 in cars, trucks, mining machines, farm equipment, trains, ships and power plants. Trials for lighter vehicles covered 50,000 kilometres. Heavier vehicles completed testing over 40,000 kilometres. Mining equipment ran for about 1,000 operating hours without major engine problems linked to fuel quality. The ministry said the tested fuel met government standards and manufacturers’ technical requirements. Officials completed those trials before nationwide distribution began in July.
Indonesia has increased its biodiesel requirement in stages since introducing B2.5 in 2008. The country moved to B10 in 2013 and B20 in 2018. It adopted B30 in 2020, followed by B35 in 2023 and B40 in 2025. B50 marks the latest increase in the mandatory national blend. Each step required changes to fuel standards, production capacity, storage and transport systems. The 2026 programme now places equal shares of biodiesel and conventional diesel in the national fuel mix.