Telephone: +44(0)1494 882994 - Lines open 7am-9pm 7 days a week.
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Biodiesel - the facts


Since June 2007 you are now permitted to 'produce' up to 2500 litres of biodiesel annually without having to pay ANY duty or VAT. 2500 litres is enough fuel for 2 average family cars a year. This applies to every member of your family or Partners.

This means if you make your own biodiesel you will be saving over a £1.20 per litre  converting used cooking oil (WVO) into biodiesel.

This saving is set to increase with the ever rising cost of diesel from the pumps.

You can make as much as you like for offroad use, generators and Heating fuel.

GoldenRay have produced a range of biodiesel processors that takes full advantage of this unusual benefit provided by the Government. The GoldenRay processors are the culmination of innovation, good design and experiance. Our processors will convert both new and used cooking oil into high quality biodiesel - in ONE machine. Just plug in and go.

Biodiesel is a fuel that has many of the characteristics of normal mineral diesel, but is made from vegetable oils or animal fat, generally, vegetable oils such as sunflower, soy, rape seed or palm oil, and used cooking oils from food processing or restaurants.

Section 2AA of The Hydrocarbon Oil Duties Act 1979 (HODA) describes biodiesel as a diesel quality liquid fuel that is produced from biomass or waste cooking oil, and has an ester content which is not less than 96.5 per cent by weight and a sulphur content not exceeding 0.005 per cent.

To produce biodiesel from vegetable oils, they are subjected to a chemical reaction, which is called transesterification. It is a process that splits the oil into Methyl Ester (biodiesel) and glycerine, using Sodium Hydroxide or Potassium Hydroxide as a catalyst mixed with Methanol. The result is a split between biodiesel (80% approx) and glycerine (20% approx).


The original diesel engine was first demonstrated in 1895 and was designed to run on vegetable oil, over the following century it was more economic to run diesels on mineral oil, and there wasn’t much concern over what we were doing to the environment. Its now common knowledge that the oil in the ground is being used faster than we can find new resources, and will go the same way as the Dodo and Quagger. We will soon be forced into stopping poisoning the atmosphere as there will be no more fossil fuels to do it with.

Biodiesel reverses all of the problems associated with mineral diesel, apart from the cost but as the production of fossil fuels decreases prices will rise until biofuels become the main fuel, this has already started to happen. Governments are bowing to the inevitable and taxing biodiesel less than other fuels. The European Community has made a commitment to increase the use of biodiesel to 2% of the total used by the year 2010. Most members of the Union are on target to achieve this but the U.K. has only just started. With or without help the market place will decide and when there is no oil left in the ground we will have to grow our own. You can't put a Nuclear power station in your car.


Biodiesel's plus-points are obvious: It is biodegradable, decreases soot-emissions by over 50%,  and  emissions of hydrocarbons it is also CO2-neutral. In addition to the environmental plus-points, it is safer (its flashpoint is ± 170C º) and will mix with fossil diesel in any proportion, or can be used neat. It is totally sustainable and can be grown on the same land again and again for ever. Best of all it puts you in control of your fuel.


In most European countries, including Austria, Italy, Spain, France and Germany biodiesel is serious business, with France and Germany as leaders. Over 150,000 cars run on biodiesel in Germany. Scattered across the country are over 1,200 service stations with a biodiesel pump. The reason for the biodiesel success in Germany is that no excise or tax is levied on biodiesel, In the U.K the government have cut the rate of excise duty on biodiesel for its use in vehicles by 20p per litre and for home production up to 2500 litres a year no tax,vat or duty.


Virtually anyone can make biodiesel by means of a very simple process, often compared to brewing beer. It means that energy-independence is in the reach of everyone.

Biodiesel is made by warming vegetable oil with a mix of potassium hydroxide and methanol (methoxide). This causes the oil to split into esters and glycerine. The methanol combines with the esters to form methyl esters (crude biodiesel) and the glycerine drops to the bottom of the solution. After running off the glycerine the crude biodiesel is 'washed' to clean out impurities and dried before filtering. It is then ready for use.

We will show you how to produce biodiesel with practical hands on training and clear precise easy read  manuals. Our methods are ones that have been tried and tested, proven to work World wide and result in good fuel. We will make it easy for you.

Making biodiesel  requires a little practice and a little knowledge.

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Telephone: +44(0)1494 882994 - Lines open 7am-9pm 7 days a week.
Email: sales@goldenray.co.uk

Please note that the above is intended as a guide only and could be subject change

Golden Ray | Unit 6c Abbey Business Centre |24-26 The Row | Lane End | Bucks HP14 3JS | Tel: +44 (0)1494 882994
Email: sales@goldenray.co.uk