Towers Of Vegetables Go Up As Singapore Builds First Vertical Farm

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Short on arable land? One solution would be to plant…up. Singapore, a small country that imports most of its food, has now begun selling vegetables from its first vertical farm. And even while they’re more expensive the vegetables are already selling faster than they can be grown. If the farms prove sustainable – both technologically and economically – they could provide a much desired supplement to Singapore’s locally grown food and serve as a model for farming in other land-challenged areas.

The farm system, created by the company Sky Green and called A-Go-Gro, is a series of aluminum towers, up to nine meters high, with 38 tiers with troughs in which vegetables are grown. To ensure uniform sunlight the troughs are rotated via a hydraulic water-driven system that needs just 0.5 liters to rotate one of the 1.7 ton structures. With an emphasis on efficiency Sky Green made sure that the water was recycled, eventually being used to water the vegetables themselves. Just 60W of power – just enough for a lightbulb – is needed to operate one tower per day. The company that builds the system, Singapore-based Sky Green, claims that the artificial system is 5 to 10 times more productive than traditional farms.

Sky Green hopes to see the prices of their vegetables go down as more vertical farms go up.

Located at the southern tip of the Malay Peninsula, Singapore, about three times the size of Washington DC, has limited land for farming. Only about 7 percent of Singapore’s food is grown locally. The vertical farms are part of the country’s efforts to increase locally grown foods. And enthusiasm for the locally grown vegetables is high, as evidenced by the fact that the greens were already being sold out before they were commercially available.  And this occurred even though customers are paying about 10 to 20 cents more per vegetable. Choices are still pretty limited, however, as only three different types of vegetables were grown. But Sky Green is planning on expanding their current 120 towers to 300 in 2013, over which they expect production to increase from half a ton to two tons and increase the proportion of locally grown from 7 to 10 percent. The increased production would also drive prices down and attract even more customers.

But only when they ramp up production will we see if prices are driven down enough to be cost-effective. Sky Green will be in big trouble if current sales for the vertically-farmed greens are just a short-lived enthusiasm for the novel system or a fleeting willingness to pay higher prices for locally grown food. If it is shown to be cost-effective, the system could show the way for other places with limited farming space or even urban areas where a little green could go a long way. Cutting down on transportation and storage costs – not to mention providing vegetables with unparalleled freshness that people may be willing to pay a little bit extra for – could make vertical farms a staple in future farming.

Peter Murray

Peter Murray was born in Boston in 1973. He earned a PhD in neuroscience at the University of Maryland, Baltimore studying gene expression in the neocortex. Following his dissertation work he spent three years as a post-doctoral fellow at the same university studying brain mechanisms of pain and motor control. He completed a collection of short stories in 2010 and has been writing for Singularity Hub since March 2011.

Discussion — 13 Responses

  • Eddie Germino November 5, 2012 on 8:55 am

    Singapore is not the same size as Texas. Not even close.

    • Adam Huttler Eddie Germino November 5, 2012 on 9:46 am

      Seriously. Singapore is about 714 square km, while Texas is 695,620 square km.

      • Peter Murray Adam Huttler November 5, 2012 on 11:22 am

        I forgot to zoom out. Thanks guys!

      • Tad Donaghe Adam Huttler November 5, 2012 on 11:22 am

        Imagine if Singapore WAS the size of Texas and had very little land left over for farming. Their population would be in the BILLIONS! lol

        • Improbus Liber Tad Donaghe November 5, 2012 on 12:53 pm

          If Singapore WAS the size of Texas it would be called Australia.

          • wassname Improbus Liber November 5, 2012 on 12:55 pm

            Singapore is ~700 km²
            Texas is ~700,620 km²
            Australia is ~ 7,741,000 km²

          • turtles_allthewaydown Improbus Liber November 5, 2012 on 3:38 pm

            Improbus – now you’re committing an even bigger goof – Australia is 11x the size of Texas. Altho in most Texan’s minds it’s hard to conceive of something bigger than Texas.

  • wassname November 5, 2012 on 12:53 pm

    I love it how singhub reports about the pros and cons. Too often tech news is uncritical enthusiasm which you can’t trust to be accurate.

  • vmagna November 5, 2012 on 1:36 pm

    Obligatory follow up comment iterating Peter Murray’s error in order to avoid articulating a comment based on the articles topic.

  • turtles_allthewaydown November 5, 2012 on 3:42 pm

    This has definite potential. But it should be pointed out, this is best suited for truck farming – fruits and vegetables. Those require more hand labor, and can be productive in smaller spaces. Grains (corn, wheat, rice, oats, etc) on the other hand, require much more space and would likely never be grown inside buildings. Well, rice might have a future in Singapore as they eat a lot of it and it is most calorie dense per acre of the grains, AFAIK.

  • Ivan Malagurski November 6, 2012 on 10:46 am

    Great idea for Singapore, I really hope it works out…

  • Ormond Otvos November 16, 2012 on 1:41 pm

    Considering the cost of truck transportation, this idea might work in urban cores, where shoppers could buy on the spot. Locate such farms near transit hubs, residential centers.

    Truck vegetables are what’s missing in urban small groceries.

  • Craig J. Townsend December 1, 2012 on 2:00 pm

    Dr Julian Simon advised building this technolgy decades ago. Im glad to see its now up and running.