Sky Greens, Singapore's first vertical farm, produces up to 1,000kg of vegetables a day. About 10 farmhands are needed to harvest that amount. When the farm reaches full capacity early next year, it can produce 5,000 to 10,000kg a day.
Vertical farms have high yields because they are high-tech. At Sky Greens in Lim Chu Kang,
vegetables grow on 9m-tall towers made of tiers of planting troughs rotating around an aluminium frame. Each tower produces five to 10 times more vegetables than conventional methods in the same land area.
Apollo Aquaculture Group, which has a vertical fish farm and a crab farm, uses high-tech water treatment, which circulates water in self-contained systems that clean it more efficiently. An optimal environment for the fish protects them from disease, lowers death rates and allows more fish to be reared in a single tank.
Owners say the most challenging - and expensive - part of setting up a vertical farm is sorting out the technology. Most took about two years to design and develop their systems.
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