Working towards a more sustainable future

Here’s how some companies in Singapore are making clear strides in decarbonising their operations using technology.

Using technology to advance sustainable farming

Artisan Green's farm in Kallang, overseen by staff. Photo: Artisan Green

Artisan Green, an indoor hydroponics farm in Sin­gapore, plans to upgrade its sustainable farming practices using a scalable, integrated farm management system. With the help of Siemens’ tech­nologies, the system will grant Artisan Green pre­cise control over its hydroponic system, ultimately improving crop quality and yield. The system allows remote access and monitoring of farm op­erations, enabling easy and secure adjustment of growing parameters for optimal crop production from any location.

An integrated recipe control system will also make choosing the cultivation program for each crop easier. It can store and manage recipes, including lighting in­tensity and duration, irrigation schedules, nutritional requirements and temperature, thereby boosting re­source efficiency. Furthermore, it can aid in reducing the risks associated with crop diseases, pests, and weather-related disruptions.

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With optimum control over its farming operations, Artisan Green will be able to easily adjust sales planning and scheduling to meet the demand efficiently and optimise seeding and growing tasks.

All these capabilities will help boost Artisan Green’s current yield of leafy vegetables and herbs by 25-fold to reach 25 tonnes per month, which is estimated to generate 134,000 meals consisting of vegetables. The company will also be able to reduce its farm-to-table carbon footprint while minimising its overall waste throughout the harvest. For instance, it can expect to reduce its water usage by 95% compared to traditional farming and eliminate the need for pesticides.

Artisan Green also utilises various advanced technologies — such as its proprietary Precision Nutri­ent Injector, a Chilled Water cooling system, and Sie­mens’ energy management software — to reduce the energy consumption of its traditional indoor growing systems by half. Combining that with the new farm management system will enable Artisan Green’s farm to operate at 15 kWh per kilogram of produce in the future. This exceeds the Singapore Food Agency’s Clean and Green standards.

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“Supported by Siemens’ state-of-the-art technolog­ical capabilities, we can advance our vertical farming operations and would greatly improve the efficiency of our manpower across operations, business planning and R&D. This will allow us to achieve greater production volumes at a lower operating cost, ena­bling us to provide fresh, high-quality local produce at affordable prices for Singaporeans. We fully intend to set a new benchmark for hydroponics operations and high-tech agriculture in Singapore and the world,” says Artisan Green founder Ray Poh.

Carbon-neutral cooling systems

Photo: dnata

Air and travel service provider dnata has implemented Kaer’s Cooling as a Service (CaaS) to provide chilled water and air to its cargo, catering and support facilities at the Singapore Changi Airport. Kaer retrofitted the cooling systems serving the two facilities with high efficiency, low-Global Warming Potential (GWP) technology and has deployed its data mining, machine learning and carbon monitoring software suite.

Consequently, dnata saw a 54% reduction in energy consumption at its cargo base and a 35% reduction at its catering and support offices. dnata expects to save at least 650 metric tonnes of carbon annually, equivalent to the greenhouse gas emissions from 530 petrol-powered cars for one year. Kaer’s suite of solutions also allows for real-time monitoring and reporting of service levels, energy use, and carbon emissions for ESG (Environmental, Social and Governance) reporting.

Additionally, dnata believes that Kaer’s solutions will help save 1.5 mil­lion kilowatt hours of electricity per year. This will complement its existing green power efforts. For instance, dnata’s Singapore facilities are powered by a rooftop power plant comprising 6,500 individual solar panels, which generates over 4,300 megawatt hours of green power each year. As such, dnata cut its electricity-related carbon emissions by 20%.

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“We are proud to be an early pioneer in low-GWP refrigerant, making our Singapore operations even more efficient and sustainable. We have plans to expand our CaaS initiatives to additional areas of our operations and look forward to working with our partners to reduce our environmental foot­print further,” says Charles Galloway, dnata’s regional CEO of Airport Op­erations for Asia Pacific.

Decarbonising the digital economy

Equinix SG3 Data Centre. Photo: Equinix

Data centres consume a lot of energy and emit significant heat, raising concerns as they underpin the expanding digital economy. Equinix recognises its responsibility to decarbonise the digital economy. With ambitious targets, Equinix has adopted a comprehen­sive approach and integrat­ed various technologies in its data centres to reduce its environmental footprint.

Equinix says its sustaina­bility strategy encompasses more than energy efficiency, water management and resource recycling. It has put in place measures to ensure that all materials and resources are consistently reused, recycled, or re­generated, contributing to developing more sustainable infrastructure throughout its facilities.

Here are some of Equinix’s initiatives in Singapore that support its holistic approach to sustainability:

• Cooling tower EC fan replacement: Equinix has deployed new technology to enhance energy efficiency at its SG3 data centre by switching to Electronically Commutated (EC) fans for the cooling tower. This upgrade alone has resulted in over 4% of total energy savings.
• Installing a solar photovoltaic (PV) system that captures sunlight and converts it into electricity to support non-critical operations. It can generate 377 kWh of electricity when the sun is at its peak and currently powers corridor lighting at Equinix’s data centres.
• Implementing a modified chiller plant, which actively monitors and pro­vides temperature adjustments to the cooling tower, enhancing overall energy efficiency.
• Installing motion-sensing detectors across its data centres’ hallways ensures that lighting is only active when needed. This reduces energy wastage and enables a more efficient power distribution across its data centres.
• Deploying cold-aisle containment system (CAC): Effective airflow management is crucial for reducing the power usage effectiveness of data cen­tres and achieving significant energy savings. With CAC, Equinix’s facilities can reduce the difference between cooling and server temperatures.

Equinix achieved a 10% energy improvement across its data centres in Sin­gapore last year through these initiatives and more. It is eyeing continued dou­ble-digit growth in energy efficiency year-on-year.