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Food scraps and mushrooms: the closed-loop garden behind the world’s first community-powered sauna
Key Excerpts from Article on Website of The Guardian
Posted: August 31st, 2026
https://www.theguardian.com/environment/2026/jul/16/communit...
This ivy-topped wall shelters an urban oasis, within which sits an unprecedented sustainable project. The world’s first “community-powered” sauna – heated by food waste from residents of the neighbouring housing estate – is set to open here. Scraps from the kitchens of residents on the Teviot estate in Poplar, will be processed in a local-scale anaerobic digester ... to produce methane gas to power the sauna. The completely circular design is just one part of R-Urban Poplar, a civic space and “living lab” where members of the community are invited to experiment with ways of taking charge of their own food supply, while adapting to the climate crisis. Andy Belfield, an architect from the R-Urban Poplar team, says those behind the project believe it is the UK’s – and the world’s – first food waste powered community sauna. Nine years ago, the site was an unused car park and empty garages. Now, butterflies flutter around leaves and flowers in raised, no-dig beds. Micro-allotments and communal growing spaces offer opportunities for local people to grown herbs, courgettes, potatoes and passion flowers. But R-Urban Poplar is more ambitious than just a community garden. It is an “ecology hub”, where workers and local residents are prototyping circular urban farming, mushroom-growing and restore-and-repair services. Wild spaces encourage pollinators. There is a community kitchen and classroom, a workshop and a tool library, even a mushroom farm.
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