Quick answer
E10 is blended locally in many regions. Ethanol is often sourced from crops like corn or sugarcane, then mixed with petrol in refineries or distribution centres. The exact origin varies by country, but the blending typically happens closer to where fuel is sold.
Detailed answer
E10 is not a brand so much as a specification—petrol with up to 10% ethanol. The production and blending processes happen in multiple steps. Ethanol itself is created by fermenting plant-based sugars, often from corn (maize), sugar beets, sugarcane, or even wheat, depending on the region’s agriculture. Once fermented, it’s distilled to a high-purity alcohol, suitable for mixing with petrol.
This ethanol is then shipped to fuel terminals or refineries. In many countries, blending occurs right before distribution to ensure the final product meets local regulations on ethanol percentage and octane rating. For instance, in the UK, a distribution centre might receive large volumes of regular petrol and separate ethanol shipments. They use precise equipment to blend them at the required ratio, creating E10.
Why blend it locally? Ethanol can absorb water or separate if stored or transported over long distances. Doing the blending close to the final market helps maintain quality control. It also simplifies logistics because ethanol might come from different sources—domestic or imported—and the petroleum base might be refined from various crude oil suppliers.
You may hear about “biofuel mandates” that set minimum requirements for ethanol content in petrol. E10 is often the chosen standard in places where these mandates are in effect. The exact supply chain depends on each country’s agriculture. For instance, in some areas, sugarcane-based ethanol is popular; in others, corn leads the way.
Though the crop used can vary, the final product meets a typical standard for E10. The focus is on ensuring the mix is up to 10% ethanol (sometimes slightly below), suitable for engines designed or adapted for it. If you’re curious about the specific ethanol source, you might find general data on your supplier’s website or government resources, but exact details can be scattered.
Overall, E10’s “made” location is as much about the ethanol production region as it is about local blending facilities. You might have Brazilian sugarcane ethanol, or domestic wheat ethanol, or any combination thereof, ending up at a depot near your city. Then it’s combined with petrol from a local refinery or port terminal. That’s how your local forecourt gets the final E10 product you pump into your tank.
