Downsizing eases as average lease sizes grow, according to global occupier report
19/06/2025
Traditionally, data centres are considered among the most difficult assets to decarbonize. However, the era of green data centres is now firmly underway. The market is witnessing the expanded use of sustainable construction materials and a variety of innovative methods aimed at reducing embodied carbon. For instance, a hyperscale operator in North America is piloting the use of cross-laminated timber (CLT) in data centre construction, targeting a carbon-negative footprint.
Yet, sourcing renewable energy alone is not sufficient to achieve true sustainability in data centres. Given the regional disparities in energy mix availability, maximizing internal operational efficiency is emerging as a key driver of meaningful ESG outcomes. One major benchmark for measuring this operational efficiency is Power Usage Effectiveness (PUE). PUE is defined as the ratio of a data centre’s total energy usage to the energy used by IT equipment alone. A lower PUE indicates reduced energy waste across non-IT systems such as cooling and lighting, reflecting higher operational efficiency. In short, the lower the PUE, the greater the environmental and cost efficiency of the data centre.
C&W Global Research analyzed average power tariffs across the Asia-Pacific region as of November 2024, finding an average of approximately 11.5 cents per kilowatt-hour. According to their analysis, a data centre with a 20MW IT load operating at a PUE of 1.5 would face annual electricity costs of around USD 30.2 million. However, improving the PUE by just 0.1 could save approximately USD 1.9 million per year, while also alleviating the burden on local power infrastructure. In countries like South Korea, where the national energy mix remains heavily reliant on fossil fuels, enhancing internal operational efficiency has evolved from a competitive advantage to an essential requirement for ESG compliance.
Against this backdrop, several leading operators are crystallizing their response strategies. One notable example is Empyrion Digital’s KR1 Gangnam Data Centre (GDC) which is designed to meet the growing demand for AI and high performance computing workloads. The facility which is ready for service in Yangjae, Seoul, has obtained G-SEED (Green Standard for Energy and Environmental Design) certification. KR1 GDC incorporates cutting-edge thermal management technologies such as Nortek’s StatePoint Liquid Cooling (SPLC), Direct-to-Chip Liquid Cooling (DLC), and Rear Door Heat Exchangers to target a PUE of 1.3 or lower. These solutions are also expected to reduce water consumption by more than 80% compared to traditional cooling methods, offering a significant competitive advantage at a time when resource constraints driven by climate change are becoming increasingly critical. Furthermore, the facility adopts a design featuring Building Integrated Photovoltaics (BIPV) to enable on-site renewable energy generation, further enhancing its sustainability credentials.
Yongsuk Choi, Chief Strategy Officer – Product & Infrastructure said: “At Empyrion, our data centre in Korea and rest of Asia are green by design — engineered from the ground up to optimise energy and water efficiency while minimising environmental impact. This is more than sustainability as an afterthought; it is embedded into every stage of our planning and operations. By combining our AI-ready infrastructure with a strong commitment to environmental stewardship, we offer a unique value proposition that meets the growing digital demands of our customers while supporting Korea’s transition to a low-carbon future.”
As carbon reduction becomes a central agenda across the global economy, examples like Empyrion’s demonstrate how a comprehensive and integrated approach can simultaneously elevate operational efficiency and energy performance, while setting a new benchmark for next-generation ESG infrastructure within the Korean data centre market.
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