Celtic Renewables

Celtic Renewables Ltd. is the first company to produce biofuel from the by-products of the scotch whisky industry.

It has been estimated that annually the whisky industry produces 1600 million litres of pot ale and 500,000 tonnes of draff which has historically been used for animal feed.

In uniquely combining the whisky by-products, Celtic Renewables Ltd adapt the traditional Weizmann Fermentation process (also known as ABE fermentation) to a brand new and entirely sustainable novel substrate – not only providing a sustainable disposal route for the by-products of one of the UK’s largest and most iconic industries, but also integrating renewable energy production with environmental sustainability and carbon reduction, by producing sustainable biobutanol as a direct replacement for fossil road fuel to help meet the EU mandated biofuel targets, together with a sustainable source of other high value products.

Celtic Renewables Ltd is initially focused on the £4 billion Scottish Malt Whisky industry as a ripe resource for developing biobutanol. The pioneering process combines the two main by-products of whisky production (Pot Ale and Draff) to produce high value renewable products, including biobutanol.

In a distillery, only 10 percent of what flows out of the distillery is future whisky- the rest is Draff and Pot Ale. The whisky industry annually produces 1,600 million litres of pot ale and 500,000 tonnes of draff which could be converted into biofuel as a direct substitute for fossil-derived fuel, thereby reducing oil consumption and carbon dioxide emissions, while also providing energy security – particularly in remote/rural areas where the whisky industry is prevalent. The Celtic Renewables Ltd production process also produces other sustainable chemicals, acetone and ethanol, as well as high grade sustainable animal feed.

“Scotland’s whisky has a world-wide reputation for excellence and generates huge benefits for our economy. It’s fitting, then, that the by-products of this industry are now being used in an area where we have so much promise – sustainable biofuels”

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