The first large-scale plant, capable of producing 50 million litres (13 million US gallons) a year, opened in Scotland in 2005, soon followed by a large plant co-owned by Tesco and Greenergy (Tesco sell 5% biodiesel at many of their petrol stations. The Fuel conforms to standard EN590 which allows up to 5% biodiesel inclusion ). Biodiesel is treated like any other vehicle fuel in the UK and the paperwork required to register as a producer is a major limiting factor to growth in the market. Although since July 2007 home users may produce 2500 litres per year for personal use without registering or paying duty.