A World War II air raid shelter in London has been repurposed into a cutting-edge underground farm, that grows peashoots, rocket and watercress.
tube trains can be heard rattling overhead, aromatic coriander leaves tilt towards the pink glow of LED bulbs.Zero Carbon Farms grows herbs and salads in Clapham, south London, a densely populated area with no room for conventional agriculture. But 30 metres below ground there is a kilometre of tunnels, and technology has made farming here a reality.
The farm grows herbs and micro-greens using hydroponic technology and LED lighting powered by renewable energy It is seen as part of the solution to the food security challenge posed by population expansion at a time when climate change and geopolitics threaten supply.But growing by artificial light is more energy intensive than conventional farming and the high costs of production have been a challenge for vertical farms across the world.
Energy prices have soared this year but Vermeir said an arrangement with supplier Octopus Energy’s business unit gave it a better price than if it were taking energy from the grid like other customers.Farming here uses 70-90% less water and 95% less fertiliser than typical agriculture. Growing takes place all year round at faster rates.
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