Partnering with Johor Special Water (JSW), AirTrunk is building a recycled water supply system for its JHB1 and JHB2 data centre campuses in Johor. The project involves re-purposing unused wastewater and is the largest of its kind in Malaysia to date. It aims to reduce reliance on potable water by providing an alternative source for operational needs.

The initiative includes investments in treatment and supply infrastructure for locally-produced recycled water. Once operational, the system will support cooling and other non-potable uses at AirTrunk’s facilities, helping to contribute to more sustainable water management in the region. The company responds to calls by both the federal and state governments to look into alternative water sources in the face of growing demand.

The recycled water initiative complements broader environmental features at AirTrunk’s Johor facilities, including the liquid cooling system installed at JHB1 in 2024. The design supports energy-efficient operations and is in line with efforts to optimise the use of natural resources.

AirTrunk’s second Johor data centre, JHB2, is currently under development in Iskandar Puteri. The facility will be scalable to over 270MW, increasing the company’s total investment in Malaysia to RM9.7 billion (approximately US$2.2 billion). JHB2 is located in a major availability zone and will be built with a target power usage effectiveness (PUE) of 1.25. Customers will also have access to multiple renewable energy options.

The company’s existing JHB1 also includes onsite solar installations and a virtual power purchase agreement (vPPA) for 30MW of renewable energy under Malaysia’s Corporate Green Power Programme.

To support future energy needs at JHB2, AirTrunk is working with national utility Tenaga Nasional Berhad (TNB) through the Green Lane Pathway for Data Centres initiative. The collaboration is expected to fast-track high-voltage electricity supply and includes a plan for AirTrunk to allocate land for TNB to build a new substation.

Chief Minister of Johor YAB Dato’ Onn Hafiz Ghazi welcomed the partnership with JSW, noting both its environmental and economic contributions. “The initiative addresses environmental concerns and also brings significant economic benefits to the state. It is a testament to the positive impact that public-private partnerships can have on our community,” he said.

JSW is a wholly owned entity under Permodalan Darul Ta’zim (PDT). A spokesperson said, “Collaborating with AirTrunk on this recycled water initiative is a significant milestone for JSW. It reflects our shared vision for sustainable water solutions and demonstrates how innovative thinking can lead to tangible benefits for both industry and the community. At the same time, we highly appreciate IWK’s role in providing treated effluent sources, which has been instrumental in completing this collaboration.”

AirTrunk currently operates 12 data centres in the Asia Pacific region, in Australia, Singapore, Japan, Hong Kong, and Malaysia. Its hyperscale platform now offers nearly 1.8GW of total capacity. In 2023, Blackstone and the Canada Pension Plan Investment Board acquired the company in what became the largest-ever deal to date in the sector, valued at US$16.1 billion.

(Image source: “Data Center” by Bob Mical is licensed under CC BY-NC 2.0.)

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