The annual output of the 16-storey "LED plant building" in Sweden is estimated to reach 550 tons

It is estimated that the world population will exceed 9.6 billion in 2050, and 66% of people will live in urban areas. As a city, how to "feed" so many people becomes a problem. Plantagon, a Swedish food technology company, has released an office building design called "Plant Building", and plans to build the first such magnificent indoor farm + office in Link ping,  sterg tland, Sweden. type building.

In the building, all plants will be grown through hydroponics (growing plants without using soil, only carrying the nutrients needed for plant growth through water, or using materials to support the roots of plants). Plantagon CEO Hans Hassle said all farmland would also be automated. Initial construction on the $40 million project began in 2012 with an expected completion date of 2020.

The "plant building" will produce 550 tons of plants per year, enough to feed 5,500 residents for a year. In this building with 16 office floors, each floor is farmland on one side and office area on the other. Apart from the office floor which takes up two-thirds of the total area of the building, the remaining one-third will be dedicated to the creation of a huge indoor farm. The photosynthesis of plants will rely on sunlight and LED light, and the frequency of LED light will also be calibrated to the value that can maximize the yield. In addition, robots will be directly involved in the cultivation of plants, thereby controlling operating costs.

According to Plantagon CEO Hans Hassle, the "Plant Building" can produce more crops with less soil and water than an outdoor farm of the same size. He estimated the building would save 1,100 tons of carbon dioxide emissions and 13 million gallons of water a year. The nice thing is that some meeting rooms also have direct access to farmland views. There is also an area for public dining on the ground floor of the building. In addition, the building also has a supermarket that directly sells the agricultural products produced.

Plantagon also submitted another design of the sphere "Plant Building". In this design, this spiral plant cultivation line will be built inside the sphere, which can automatically move the plants from bottom to top, and the average cultivation of crops The cycle is 30 days.

Plantagon is also calling on other cities around the world to build such versatile indoor farms. Currently, they are in talks with the United States, Singapore, and Shanghai and Hong Kong in China. Hassle is a firm believer in the need for cities to have their own agricultural production bases close to the center of the city. "This project demonstrates a way of 'feeding' future cities where land and water are scarce."