A British firm collected used coffee grounds from cafés and other businesses, dried them and pressed them into fire logs; each log contained the grounds from about 25 cups of coffee and was said to bu
British startup bio-bean successfully turned millions of coffee grounds into sustainable fire logs for a decade. Despite the environmental benefits of diverting waste from landfills, the company's business model eventually proved unsustainable.
Why it matters
It highlights the challenges of scaling circular economy startups that rely on waste-to-energy conversion models.
A British startup transformed millions of cups of coffee into premium fuel, creating a circular product that burned hotter than wood—until the model couldn't sustain itself.
By Space Daily Editorial Team · Edited by Mal James
Published September 3, 2026 · How we edit
There’s a satisfying tidiness to the idea. You drink a coffee, the grounds are disposed of, and somewhere down the line that same waste comes back as a fire log that heats your living room. It sounds like the kind of closed loop that ought to exist more often than it does.
For about a decade in Britain, it actually did. And the product that made it real is worth a close look.
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