
Celtic Renewables is a company that's making waves in the sustainable energy sector. They're a Scottish-based firm that's pioneering innovative solutions to help us move away from fossil fuels.
Their approach is centered around the idea of transforming non-food biomass into bio-oil, which can then be used as a low-carbon alternative to traditional fuels. This process involves converting waste biomass into a high-quality bio-oil that can be used in various applications, such as power generation and transportation fuels.
One of the key benefits of Celtic Renewables' technology is its ability to utilize a wide range of biomass sources, including agricultural waste, forestry residues, and even municipal solid waste. This versatility makes their solution particularly appealing, as it can help to reduce waste and minimize the environmental impact of our energy production.
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Caldic and Enter Form Partnership
Caldic and Celtic Renewables have formed a strategic partnership, which is a big deal for the bio-solvents market.
Caldic, a leading solutions provider for the life science and specialty chemical industries, will distribute the bio-solvents produced by Celtic Renewables' first production plant.
This partnership will provide Caldic's customers with a sustainable bio-based alternative to fossil fuel produced solvents, with an extremely low carbon footprint.
Caldic's customers will be able to advance their sustainability journey with the help of Celtic Renewables' high purity, bio solution.
The partnership will support Caldic's customers in the production of biofuels and personal care and homecare products.
Caldic is delighted to have agreed a partnership with Celtic Renewables for the distribution of their bio-solvents throughout Europe.
This partnership is in line with Caldic's strategic plan to grow their portfolio with products that have a lower carbon footprint.
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Renewable Energy Solutions
Celtic Renewables has made significant strides in developing sustainable biofuels, inspired by biofuel pioneer David Ramey's 10,000 mile journey across the USA in a car fuelled by biobutanol.
The company's breakthrough came from combining barley residues with liquid effluent from whisky distillation to create a new raw material, which can be used to extract high-value, low-carbon products like acetone, butanol, and ethanol.
These biofuels can be used in place of regular diesel or petrol without any modification to your car engine, making them a viable alternative for transportation.
The ABE process, which was first developed during the First World War, has been revived by Celtic Renewables to produce biobutanol from whisky residues.
This approach is more sustainable than growing crops specifically to create biofuels, as it utilizes waste materials that would otherwise be discarded.
By partnering with local distilleries, Celtic Renewables can save them hundreds of thousands of pounds on disposal costs while also boosting their environmental credentials.
The company has secured funding from various sources, including private investors, Scottish Enterprise, and a Department of Energy and Climate Change grant, totaling around £1.2 million.
This funding has enabled Celtic Renewables to scale up their technology from laboratory to viable commercial pilot scale.
In 2017, the company made history by powering the world's first car run on biofuel derived from local whisky production, demonstrating the potential of their products.
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Scientific Innovation

Celtic Renewables is a spin-out company from Edinburgh Napier University that's making groundbreaking scientific innovation a reality.
Their roots began in a university research project to explore sustainable alternatives to fossil carbon, specifically in the whisky industry.
The scientists discovered that the by-product residues from whisky distilling could be combined and used as a new starting material for the process.
This collaboration with Scotland's whisky production industry led to the creation of a biofuel called biobutanol, made from draff and pot ale.
The biofuel can be used as a direct replacement for road fuel, with no engine modification required.
Celtic Renewables' patented low-carbon technology converts by-products and waste from various industries into high-value green chemicals.
These green chemicals generate up to a 65 percent carbon saving in comparison to petrochemicals.
For every tonne of bioacetone or biobutanol produced, almost three tonnes of fossil carbon is avoided.
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Proprietary Process
Celtic Renewables has developed a proprietary process that converts by-products and waste from industries like food, drink, and agriculture into high-value green chemicals.
These green chemicals have a significant carbon-saving impact, with up to a 65 percent reduction compared to petrochemicals.
The company's technology converts whisky residues into green chemicals used to make everyday items, which is a great example of turning waste into something valuable.
For every tonne of bioacetone or biobutanol produced, almost three tonnes of fossil carbon is avoided, which is a huge environmental benefit.
Celtic Renewables' plant is the world's first biorefinery to produce and supply green chemicals at this scale, making it a pioneering achievement in the green chemical revolution.
The company's fermentation process has been scaled up to 100,000 litres for each batch, which is a testament to the effectiveness of their proprietary process.
This process has been developed and proven in Scotland, where Celtic Renewables' global technology centre is based, and is a source of pride for the company.
Global Rollout
Celtic Renewables is addressing the estimated $2 billion global market for green chemicals. This is a huge opportunity for the company to make a significant impact.
The company's bioacetone and biobutanol can reduce the chemical industry's carbon emissions. This is a crucial step towards a more sustainable future.
Celtic Renewables' plant has been operational since 2023. This marks a major milestone for the company.
Construction of the company's first biorefinery was completed at the end of 2022. This was a significant investment in the company's future.
The company is already looking into three to four larger-scale biorefinery opportunities. These will have a combined output of 32,000 tonnes per annum.
Celtic Renewables is seeking to deploy its technology through licensing and partnerships across the globe. This will help the company reach a wider audience and make a bigger impact.
Circular Economy
Celtic Renewables is at the forefront of creating a circular bioeconomy. They've developed a process that not only reduces carbon emissions but also helps to defossilize the chemical industry.
The chemical sector consumes 10 percent of all fossil fuels. This is a staggering amount, and Celtic Renewables' Grangemouth plant is a major step forward in the UK's journey to net zero.
Their technology produces secondary products like biogas and recycled water. These can be reintegrated into the process or sold back to suppliers, achieving a truly circular economy.
The potential to scale this up around the world is immense. Celtic Renewables is already shipping bioacetone and biobutanol in tankers, and there's a huge opportunity to transform how we make everyday consumer products.
Climate Change
Climate change is a hot topic right now – and it’s only getting hotter. The IPCC recently reported that global warming will be irreversible if action isn’t taken now.
Celtic Renewables is passionate about answering the question of how to tackle climate change. They aim to transform society’s reliance on fossil fuels by bringing a green solution to the global market.
The company successfully reinvented an early 1900s biological process called ABE fermentation to develop technology that can convert low-value waste materials into sustainable chemicals and advanced biofuels.

Celtic Renewables made history in 2017 by powering the first car fuelled by whisky residue-derived biobutanol. Their patented technology can also be applied to a wide variety of other organic residues.
The business is almost completing the construction of a purpose-built, first-of-its-kind biorefinery in Grangemouth. This plant will allow Celtic to generate sustainable petrochemical alternatives on an industrial scale.
We can use the same products as we use now, because Celtic Renewables makes the same chemicals, just in a different way.
Sustainability
Celtic Renewables has its roots in research to find sustainable alternatives to fossil fuels. The company's founder set up the Biofuel Research Centre at Edinburgh Napier University in 2007 to conduct research in this area.
The whisky distillation process produces huge quantities of organic by-products, namely barley residues called draff and leftover liquid in the stills called pot ale. These are of very low value to industry and create a problem in disposal on a routine basis.
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The ABE process, which extracts high-value, low-carbon products like acetone, butanol, and ethanol from barley residues and pot ale, was first developed during the First World War. It led to one of the largest biological industries in the world until the 1960s.
Producing biobutanol from whisky residues is more sustainable than growing crops specifically to create biofuels. This is because it reduces the need for land, water, and fertilizers, making it a more environmentally friendly option.
Celtic Renewables partnered with local distilleries to supply the raw materials, which could save them hundreds of thousands of pounds on disposal costs and boost their environmental credentials. This partnership helped the company to scale up its technology from laboratory to viable commercial pilot scale.
The company secured funding from a variety of sources, including private investors, Scottish Enterprise, and a Department of Energy and Climate Change grant that totalled around £1.2 million. This funding allowed Celtic Renewables to continue its research and development efforts.
Celtic Renewables aims to continue expanding throughout Scotland and worldwide, using its biorefinery as a launchpad for new opportunities. The company hopes to serve as a beacon of inspiration for others to follow in its footsteps and develop sustainable businesses.
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