Vertical Farming Evolves With Efficiency Gains but Faces Economic Hurdles

Vertical farming, which shifts crop production from horizontal land into stacked indoor layers, is emerging as a key approach to food production in dense urban environments. Supporters say controlled growing conditions can raise yields and reduce water use, though high capital and energy costs continue to limit wider adoption.

Core technology and operating model

Vertical farms seek to maximize output per unit of floor space by stacking growing layers vertically or horizontally. The model typically combines controlled-environment agriculture, or CEA, adjusting temperature, humidity and lighting to create optimal conditions for crop growth.

Many operations also rely on soilless cultivation, including hydroponics, aquaponics and aeroponics, to deliver nutrients directly to plants and reduce dependence on conventional soil.

Industry development and deployment

The modern concept of vertical farming was introduced in 1999 by Dickson Despommier, a professor at Columbia University. Although the original designs for skyscraper farms have not been fully realized, the model has since been tested and deployed worldwide.

Singapore opened the world’s first commercial vertical farm in 2012, and the Association for Vertical Farming was established in Munich in 2013. In 2022, Dubai completed the world’s largest vertical farm, producing more than one million kilograms of leafy greens annually while using 95% less water than conventional cultivation.

Advantages and constraints

Vertical farming can produce more than 10 times the yield per unit area of conventional agriculture and is insulated from extreme weather, while using less land. However, initial construction costs are high, and energy consumption, particularly for LED lighting, remains a major constraint.

Water savings and high yields are notable, but economic viability remains constrained by startup capital and power demand. If electricity comes from non-low-carbon sources, the environmental footprint may exceed that of conventional greenhouses.

Industry participants are exploring agrivoltaics and other approaches to power vertical farms with solar energy and improve their energy and environmental performance.