Recently, the Bureau of Indian Standards (BIS) published two major fuel standards:

• IS 19850: 2026 (for Ethanol Blended Fuels): This standard outlines the specifications for E22, E25, E27, and E30 fuels, which are admixtures of completely free-of-water (anhydrous) ethanol and motor gasoline.
  • E22, E25, E27 and E30 fuels are higher Ethanol-Petrol blends at 22%, 25%, 27% and 30%, respectively.
  • Ethanol Blending is a process of mixing ethanol with petrol. E.g. E20 (20% Ethanol in petrol). 
  • Current status: India has achieved 20% Ethanol Blended Petrol (EBP) target set under the National Policy on Biofuels (2018) and aims to move towards 30% blending by 2030.
• IS 18698 : 2026 (for DME Blended LPG): This standard replaces the older 2024 standard for Dimethyl Ether (DME) blended Liquefied Petroleum Gas (LPG).
  • DME is a clean-burning synthetic fuel that behaves almost exactly like LPG.
  • 2 production pathways: 
    • Indirect route (syngas to methnol to DME) and 
    • Direct route (syngas to DME).
  • China accounts for nearly 90 % of global DME production capacity.