Singapore’s PUE targets and what they mean for how a data centre is run
Singapore PUE Targets: What Data Centres Need to Know
Singapore’s Green Data Centre Roadmap has set ambitious power usage effectiveness (PUE) targets that are reshaping how operators approach energy efficiency. With a 1.3 PUE target and 1.25 condition for new capacity, data centre managers are facing new performance benchmarks that demand strategic operational changes. Understanding these targets is critical for compliance and competitive positioning in the region’s rapidly evolving market.
Achieving these PUE targets requires data centres to optimize cooling systems, implement advanced power distribution infrastructure, and leverage real-time energy monitoring capabilities. The shift toward these efficiency standards means operators must reassess their baseline metrics, identify energy waste across facilities, and adopt technologies like AI-driven thermal management and renewable energy integration. Meeting Singapore’s roadmap targets isn’t just about regulatory alignment—it’s about future-proofing operations and reducing long-term operational costs.
Singapore’s PUE targets and what they mean for how a data centre is run
Singapore has a 1.3 PUE target on its roadmap and a 1.25 condition on new capacity. Neither is a rule for the hall you run today, as far as the public sources show. Both change the question you will be asked: what is your PUE, and where does the number come from?
The Green Data Centre Roadmap, published by IMDA on 30 May 2024, supports data centres with a PUE of 1.3 or lower. The second Data Centre Call for Application, run by EDB and IMDA, opened on 1 December 2025 and asks new capacity for 1.25 or better at 100% IT load. On 21 August 2026, EDB announced that four proposals had been selected, with 200 MW provisionally allocated.
What PUE measures
Power Usage Effectiveness is total facility energy divided by IT equipment energy. The Green Grid developed it in 2007. A PUE of 1.0 would mean every watt entering the building reaches the IT equipment. Everything above 1.0 is overhead, mostly cooling and power conversion.
Because it is a ratio, it moves with load, season and the quality of the two meters that feed it.
Two numbers, two different jobs
| 1.3 or lower | Green Data Centre Roadmap, IMDA, 30 May 2024. A target the roadmap supports. The public sources do not state a date or enforcement route for existing sites. |
| 1.25 at 100% IT load | Condition of the second Data Centre Call for Application, opened 1 December 2025, applications closing 31 March 2026. Sits alongside a Green Mark for Data Centres 2024 Platinum rating, at least 50% of new capacity on eligible green energy pathways, and IT equipment meeting SS 715:2025. |
| Outcome so far | EDB, 21 August 2026: four proposals selected, 200 MW provisionally allocated. |
Why the tropics make it harder
Singapore is tropical, with no cool season to borrow free cooling from. Peter Judge, Senior Research Analyst at Uptime Intelligence, put it this way in the article Sunbird published on 19 August 2026:
His point, in the same article, is that existing government grants cover IT systems only. Large PUE gains will probably need cooling upgrades as well. That is a capital conversation, and it starts from knowing your current number.
Four things that change in how a hall is managed
1. PUE is measured continuously
Sunbird describes basic programmes reading PUE weekly or monthly, intermediate ones daily, and advanced ones continuously. Its software calculates PUE in real time from device telemetry. You set PUE flags to choose which readings count, and the result appears as tables or dashboard widgets.
2. The IT side is metered, not estimated
IT equipment energy is summed from intelligent rack PDUs, floor PDUs, RPPs or UPS outputs. Total facility energy usually comes from the utility meter. If either side is an estimate, the ratio is too, and an estimate will not hold up when someone asks you to show the figure.
3. Capacity is recovered before it is built
Sunbird points to better power and space utilisation as a way to improve PUE, and cites its Comcast case study on the subject. It also cites Vodafone, which wanted to cut its data centres’ carbon footprint and defer new builds by using existing facilities more fully.
4. The cooling environment is watched
Tracking temperature, humidity and airflow lets you hold a PUE gain once you have made it. On 29 September we covered the sensing hardware for this. The software side is what turns those readings into a trend.
What we do not know yet
- The public sources do not say when or how the 1.3 target reaches existing sites.
- The 1.25 figure is stated at 100% IT load. PUE moves with load, so a hall running part-full will read higher.
- Sunbird’s article names no specific product module and gives no PUE improvement figures, so we do not quote one.
Frequently asked questions
What is PUE?
Power Usage Effectiveness is total facility energy divided by IT equipment energy. A value of 1.0 would mean every watt reaches the IT equipment, and the closer a site gets to 1.0, the more efficient it is. The metric was developed by The Green Grid in 2007.
What PUE targets apply to data centres in Singapore?
Two figures are in play. The IMDA Green Data Centre Roadmap, published on 30 May 2024, supports data centres with a PUE of 1.3 or lower. The second Data Centre Call for Application, launched on 1 December 2025, asks new capacity to be designed, built and operated at a PUE of 1.25 or better at 100% IT load, alongside a Green Mark for Data Centres 2024 Platinum rating.
Are these targets law for existing data centres?
The public sources we reviewed describe 1.3 as a roadmap target and 1.25 as a condition of the new-capacity call. They do not say how or when either will apply to existing facilities. For a definitive answer on a specific site, check with IMDA.
How often should PUE be measured?
Sunbird describes a range. Basic programmes measure weekly or monthly, intermediate ones daily, and advanced ones continuously with energy management software. Continuous measurement is what makes a trend, and a seasonal or load-driven swing, visible.
Why is PUE harder to reduce in a tropical climate?
Peter Judge of Uptime Intelligence, quoted in Sunbird’s article, expects the limits to be challenging to meet in a tropical climate. He also notes that existing government grants cover IT systems only, so large PUE gains will probably need cooling upgrades as well.
How does DCIM software help with PUE?
Sunbird’s software calculates PUE in real time from device telemetry, shows it as tables or dashboard widgets, and lets you set PUE flags to choose which readings count. It also tracks temperature, humidity and airflow so a gain can be held once made. Sunbird’s article publishes no PUE improvement figures, and neither do we.
See your PUE on live data
Enova Technologies is an authorised Sunbird DCIM partner in Singapore. Send us the meters you have today, and we will show you by email or short recording how Sunbird reads them into a live PUE figure.
Ask about PUE reportingSources: Sunbird, How Will PUE Caps In Singapore Change The Way Data Centers Are Managed?, 19 August 2026. Sunbird, How do I calculate PUE?. IMDA, Charting green growth for data centres in Singapore, 30 May 2024. IMDA, Launch of the second Data Centre Call for Application, 1 December 2025. EDB, Four data centre proposals selected as part of the second Data Centre Call for Application, 21 August 2026.
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eNOVA Technologies is Singapore's specialist distributor for data centre IT management solutions, representing Adder, Guntermann & Drunck, Raritan, Sunbird, ZPE Systems, and VuWall across Singapore and Southeast Asia. Our technical content is produced with AI assistance and reviewed by our in-house team before publication.
This article was produced with AI assistance and reviewed by the eNOVA Technologies team. All technical claims are verified against manufacturer documentation.
