In September 2019, Seoul Metropolitan Government and Seoul Metro opened a 394-square-meter smart Metro Farm with Farm8 at Sangdo Station. The site combined a cultivation room, auto farm, experience area and a cafe selling salads made from the plants.

The clever move was to treat a subway station as both real estate and demand. Commuters could see the farm, learn the system and buy the output next door, making the farm a storefront rather than a hidden production asset.

Maeil Business Newspaper reported that Farm8's Pyeongtaek plant used 12-tier racks, LEDs, nutrient solution and automatic controls for temperature, humidity and CO2, producing 6,000 leafy greens a day in a 600-pyeong plant and reaching about 40 times greenhouse productivity on the same area.

The Metro Farm version was smaller, but the same logic made land scarcity useful: Solutions Journalism's tracker summarized the BBC report as about 30 kg of vegetables a day from the subway farm, at 40 times traditional farming efficiency.

Put production where demand already walks

The station gave Farm8 foot traffic, visibility and underused indoor space in one place.

Controlled farming removed weather and fine-dust exposure from leafy-greens production.

The cafe shortened distribution to meters, not kilometers.

Public demonstration made the farm a trust-building exhibit as well as a production unit.

If distribution is expensive, move the factory to the demand node. The best location may be unused infrastructure, not cheaper land.

Seoul said in 2019 that it planned additional metro farms at four stations that year. Farm8 continued expanding plant factories and container farms; Maeil reported it expected KRW 10 billion in plant-factory equipment sales in 2020, including container orders from Japan.

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The sources

  1. Seoul opens Korea’s first smart “Metro Farm” at Sangdo Station, introducing a robot sowing seeds and growing plants 24/7 english.seoul.go.kr
  2. 반도체공장 같은 `첨단 수직농장`…생산성 비닐하우스의 40배 mk.co.kr
  3. Is underground farming the future of food? storytracker.solutionsjournalism.org