A Sustainable Vertical Farming System for High-Density CitiesJoint Research Outcome by Zebrafish Capital and @Temasek Polytechnic - School of Engineering
- Feb 6
- 3 min read
Zebrafish Capital and students from Temasek Polytechnic, Diploma in Business Process & Systems Engineering — @Xi Yi Lim, @Shi en Lim, @Sim Xiang Fei, and @Brayden Lim— have completed the second phase of our joint research on sustainable urban food production. Building on earlier work on sustainable food ecosystems and park-level planning, this phase focuses on the design and validation of a deployable, single-facility model based on Controlled Environment Agriculture (CEA).
Rather than demonstrating a single crop or a conceptual pilot, the study takes a systems engineering approach. It delivers a standardised technical and operational framework covering facility architecture, environmental control, operating protocols, cost structure, and scale-up strategy. The objective is to provide a practical pathway for reliable, localised food production in high-density urban settings.
A Vertical Farming Unit Designed for Dense Urban Environments
Producing fresh food within severe space constraints is a core challenge for cities. The proposed vertical farming unit adopts a multi-layer indoor structure that shifts productivity from “per square metre of land” to “per cubic metre of space”, significantly increasing output without additional footprint.
Operational and logistics simulations are incorporated at the design stage to validate workflow efficiency, labour movement, materials flow, and potential bottlenecks. This enables capacity and throughput to be stress tested prior to construction, thereby reducing uncertainty during real-world operation.
The unit is conceived as a standard module that can be deployed in parallel and can expand incrementally without requiring complete redevelopment.
Sustainability as System Design, Not Just Cultivation Method
In this model, sustainability is translated into measurable and controllable engineering parameters rather than treated as a purely agricultural attribute. Key elements include:
Closed-loop water and nutrient circulation to minimise resource input and discharge
Sensor-based, IoT-enabled real-time monitoring and automated environmental control
Standardised maintenance and hygiene protocols to reduce systemic risk
Modular equipment and structural design to support phase expansion and replication
Agricultural production is therefore treated as continuously operating urban infrastructure, driven by data and control systems rather than individual experience.
Standardised Operations and Maintenance Framework
The research establishes structured operating and inspection procedures covering seeding, cultivation, harvesting, cleaning, and preventive maintenance. Critical environmental variables, equipment conditions, and sanitation status are regularly monitored and logged.
By codifying processes and parameter ranges, the model enables consistent quality and food safety across teams and locations, thereby providing the operational basis for scalable deployment.
Multi-Functional Layout for Higher Asset Utilisation
Beyond the core production zone, the facility design includes dedicated areas for R&D, pilot testing, and training or demonstration activities.
This integrated layout supports crop and technology trials as well as industry and public engagement, expanding use cases without compromising primary production capacity and improving overall asset utilisation.
Quantitative Economic Model and Feasibility Assessment
A complete cost model has been developed, incorporating capital equipment, energy consumption, labour, maintenance, and depreciation. Break-even analysis is conducted based on yield and pricing assumptions.
The results indicate that commercial viability is primarily driven by:
Tight control of energy and labour costs
Stable system performance and yield consistency
Efficiency gains from automation and standardisation
Effective access to policy support and ecosystem resources
The model is therefore efficiency- and reliability-driven rather than dependent on price premiums or short-term incentives.
From Conceptual Blueprint to Deployable Unit
While earlier collaboration defined a broader framework for sustainable food systems and parks, this phase translates that framework into an engineering-ready, deployable unit.
This standardised module can serve as a building block for future urban food and agriculture parks. By adjusting parameters for local energy prices, policy conditions, and market demand, it can be adapted and replicated across regions.
By combining modular physical design, controlled resource loops, and data-driven operations, the project moves sustainable urban food production from conceptual planning into an implementation phase grounded in engineering design, operational discipline, and financial modelling.
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