Inside Singapore’s Green Data Centre Roadmap: The High-stakes Push Toward PUE 1.3

Singapore is positioning digital infrastructure growth alongside sustainability constraints, and the policy signal is explicit. Singapore’s Green Data Centre Roadmap (GDCR) was launched on 30 May 2024 by the Infocomm Media Development Authority (IMDA), with an aim to provide at least 300 megawatts of additional data centre capacity, with the possibility of further capacity if green energy is used. The context is a country described as a regional data centre hub with a total capacity exceeding 1.4 gigawatts. The roadmap sits alongside the Singapore Green Plan 2030, framed as a whole-of-nation effort with a goal of achieving net-zero emissions by 2050, even as data centres are known to be heavy consumers of energy and water.

Efficiency is not a soft preference in the new approach; it is increasingly an entry requirement for growth. A guide to power monitoring linked to the 2024 Green Mark refresh states that the refresh sits inside a wider IMDA roadmap that unlocks at least 300 MW of additional capacity through energy-efficiency initiatives. It also sets out how operators are expected to prove performance. Power Usage Effectiveness (PUE) is defined as total facility energy divided by IT equipment energy, and a PUE of 2.0 is explained as one watt of facility overhead for every watt of IT load. A PUE of 1.3 is explained as only 0.3 watts of overhead per watt of IT, positioned as close to international best-in-class operation. The same source describes a headline target of PUE ≤1.3 at 100% IT load over the next decade.

How Capacity Awards Are Being Linked to PUE and Green Power

In practice, Singapore is using competitive allocation rounds to translate the GDCR into real project decisions. On 14 July 2023, IMDA and the Singapore Economic Development Board (EDB) said that under a pilot Data Centre – Call for Application exercise, they would provisionally award about 80 MW of new capacity to four data centres: AirTrunk-ByteDance (Consortium), Equinix, GDS, and Microsoft. Examples of desired outcomes included best-in-class energy performance such as meeting Green Mark DC Platinum Certification, plus broader commitments such as expanding international connectivity (including submarine cable capacity) and anchoring compute capacity while linking with offshore data centres. This made efficiency one factor in a wider national value proposition, not a standalone metric.

The next allocation window raises the bar and makes the gatekeeping more explicit. EDB and IMDA announced Data Centre – Call for Application (DC-CFA2) on 1 December 2025 to allocate at least 200 MW of capacity to operators that can demonstrate world-class efficiency and sustainability. The application window closes on 31 March 2026. Projects with well-developed sustainability plans and a commitment to low-carbon outcomes are prioritized, and applicants must meet stringent requirements that include at least 50% of power from green sources. The same update states that the Green Data Centre Roadmap sets a PUE target of less than 1.3 for new builds, and that meeting or exceeding the standards may receive faster approvals and earmarked grid allocations.

Market reports suggest these policy constraints are now shaping capital allocation, design decisions, and even the competitive dynamics of who can build in Singapore. Mordor Intelligence projects the Singapore data center power market to grow from USD 1.66 billion in 2025 to USD 1.71 billion in 2026, reaching USD 1.99 billion by 2031, with a 3.05% CAGR over 2026–2031. It ties renewed investment appetite to the May 2024 roadmap releasing 300 MW of extra capacity linked to stringent efficiency metrics. Separately, Mordor Intelligence projects the Singapore data center construction market to expand from USD 4.56 billion in 2025 and USD 4.75 billion in 2026 to USD 5.96 billion by 2031, at a 4.64% CAGR between 2026 and 2031. In that same construction outlook, a quota-based approach is described as steering developers toward a 1.25 PUE ceiling and 50% renewable sourcing, underscoring why the Singapore green data centre roadmap is now a design constraint as much as a policy announcement.