As data centers face growing pressure to reduce energy consumption, water use and carbon emissions, sustainability has become mission‑critical — not only from an operational standpoint, but also in response to evolving regulatory requirements. Improving power usage efficiency (PUE) and water usage effectiveness (WUE) is now a key lever for achieving both environmental performance targets and compliance with emerging European legislation, including Commission Delegated Regulation (EU) 2024/1364, which establishes a common EU‑wide sustainability rating and reporting scheme for data centers.
Rising rack densities driven by AI and high‑performance computing are accelerating the shift from air cooling to liquid cooling, making accurate measurement and control more important than ever. Under Delegated Act 2024/1364, data center operators are required to report standardized sustainability KPIs, including energy and water performance, using transparent, verifiable measurement methodologies. This places new emphasis on high‑quality, continuous data across all critical systems.
Achieving ultra‑low PUE and optimized WUE depends on precise, reliable measurements across the entire facility, from electrical distribution and backup power to chilled water systems, liquid cooling loops and rack‑level environments. High‑accuracy temperature sensors validate cooling performance and expose inefficiencies such as fouling, flow imbalance or chiller degradation before they impact uptime, sustainability metrics or regulatory reporting. Accurate flow monitoring ensures optimal heat transfer while avoiding over‑pumping, leaks or blockages that waste energy and water.
Maintaining cooling fluid quality is equally critical for sustainable, compliant operations. Continuous monitoring of parameters such as pH, conductivity, turbidity, dissolved oxygen and glycol concentration protects system components, maximizes heat‑transfer efficiency and reduces the risk of corrosion, scaling or microbial growth. Real‑time measurement eliminates manual sampling, supports predictive maintenance and extends asset life, helping operators demonstrate continuous improvement when reporting sustainability KPIs under the EU framework.
Beyond cooling loops, advanced instrumentation supports WUE optimization through precise water balance monitoring, leak detection and level measurement, all of which are increasingly scrutinized under sustainability reporting obligations. At the rack level, continuous monitoring of airflow, pressure, temperature and gas detection improves reliability, safety and regulatory compliance, while ensuring that rising power densities do not compromise sustainability goals.
In short, advanced measurement technology provides the data, accuracy and transparency required to operate modern data centers more efficiently, sustainably and reliably, improving PUE and WUE while meeting the expectations set by Delegated Regulation (EU) 2024/1364 and future phases of the EU sustainability rating scheme.
Want to see how best practices are applying these measurement strategies in real‑world, regulation‑ready data center projects?
Join our on‑demand webinar to explore practical approaches to improving PUE and WUE, optimizing liquid‑cooling systems and turning measurement data into actionable sustainability and compliance gains.
