Scotland’s Celtic Renewables secures investment for facility at Grangemouth 

Celtic Renewables has secured £16.23 million (€18 million) in public and private funding to scale its production of high-demand green chemicals.
The funding comprises £5 million (€5.75 million) in new investment from Scottish Enterprise, Scotland's national economic development agency, and £5 million from Celtic’s existing private investors, alongside £6.23 million (€7.1 million) from the Grangemouth Just Transition Fund that was awarded by the Scottish Government in December.
The latest investment was announced by Scotland’s Secretary for Climate Action and Energy Gillian Martin on a visit to Celtic Renewables’ biorefinery at Grangemouth.
Celtic Renewables will use the fresh investment to fund the planning and development of a new £120 million (€138 million) industrial-scale biorefinery at Grangemouth with 10 times the production capacity of the company’s current facility.
Celtic currently operates a commercial demonstrator biorefinery at Grangemouth. It uses ABE fermentation to produce bio-acetone, bio-butanol, and bioethanol from locally sourced waste and by-products including pot ale from whisky distillation and rejected potatoes.
Martin said: “This investment is a clear demonstration of our commitment to securing a just transition for Grangemouth and ensuring the region remains at the heart of Scotland’s low‑carbon industrial future.
“Celtic Renewables is an outstanding example of the innovation and ambition that is driving our move towards net-zero, and this further investment by Scottish Enterprise will help the company scale up, create high‑quality jobs and build new skills for the local workforce.”
Celtic Renewables CEO Mark Simmers added: “Our demonstrator facility in Grangemouth is Scotland’s first biorefinery and has been operational since 2023.
“In that time, we’ve proven that our patented ABE fermentation process is scalable and commercially viable, de-risking future projects.”