Cornwall's food-waste scheme is giving leftovers a second use: they are being turned into electricity and fertilizer instead of being treated as ordinary trash.
Council officials say that making this process easier for residents to understand may persuade more households to sort out food scraps, which could help lift Cornwall's recycling rate.
Here's what to know
About 39,700 US tons (36,000 tonnes) of food waste have been recycled, with those scraps going to an anaerobic digestion plant in Holsworthy, Devon, according to the BBC.
Council leaders say that if more people understand what happens to food waste after collection, participation could rise and help Cornwall work toward a recycling rate of about 65% by 2029.
Severn Trent Green Power operates the Holsworthy facility, where the collected scraps are screened, mixed with water, and then placed in a digester that produces methane.
"That methane we use as a fuel for engines that run generators and the generators produce electricity — and we then inject the electricity back into the National Grid," explained Chris Lofts, the site manager.
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Lofts said the plant also uses the material left over at the end of the process.
"Even the by-product, the digestate that comes out — that's used as a fertiliser for farmers to fertilise the countryside and make all the flowers and crops grow," he said.
The site processes about 1,200 tons (1,100 tonnes) per week, which is enough to power 8,500 homes.
More background
A sizable portion of household rubbish is still food. Cornwall Council found that food accounted for 22% of black bag waste, and 43% of that food was still inside packaging.
When it is separated from general rubbish, food waste can be used to create energy and nutrient-rich material for farms rather than being burned with mixed trash.
Lofts said that option delivers better results than incineration.
"The incinerators use the waste as a fuel — they burn it and heat up steam generators from that," he said. "But there is a residual, the ash, which needs to go somewhere."
He added, "It's an imperfect procedure — you're not getting as much electricity out of it as you would do if you're sending it to us here."
What's being done?
Cornwall's system brings together household food-waste collection and a processing setup to get as much practical use as possible from what residents throw away.
A big part of the effort is public awareness. Officials believe participation will improve if households view food scraps as a source of electricity and fertilizer, not just as garbage.
Councilor Loic Rich, Cornwall Council's portfolio holder for environment and climate change, connected that message to Cornwall's wider recycling ambitions.
"At the moment, we're just over 50%. I'd like to get to 65% by 2029, but we can only do that if people in Cornwall help," he said.
Sorting out food waste can shrink the amount of rubbish sent for incineration while also helping produce electricity and material that can be reused in agriculture.
"It's just another thing we don't really want to be chucking away to get burnt in the incinerator when it can actually be reused and put to good use," said Rich.
Where can I learn more?
Cornwall's food-waste program is built around a simple idea: Scraps are more useful when they stay out of the trash. These stories explore that same thinking in other settings, from turning byproducts into new ingredients to cutting waste earlier in the kitchen.
• Apple pomace from cider production is being turned into protein-rich ingredients, cutting waste.
• In home kitchens, cooks are turning watermelon rind and skin into tangy kimchi.
• Home cooks are adopting freezer storage alternatives to cut food spoilage and packaging waste.
• Zero-waste kitchens rely on easy reusable swaps that reduce plastic and everyday trash.
When people separate scraps, save usable food, or find better uses for what would otherwise be tossed, food-waste collection starts to look less like a chore and more like part of a practical circular system.
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