The certification is currently specific to ZUR2 and Switzerland; the scope of any intended rollout to other sites is not confirmed in available reporting

Decision Lens

The signal here is not the award but its methodology. SDEA’s PLATINUM Plus is evaluated against operational data from running facilities — PUE, CUE, and WUE measured in production, not projected from building specifications. According to Digital Realty, ZUR2 recorded a PUE of 1.10, a CUE of 0.02, and a WUE of 0.00 under that standard. As enterprise customers in Europe push procurement toward auditable, third-party verified sustainability outcomes, the gap between operators who can demonstrate live performance and those who rely on design-stage claims is becoming a competitive differentiator. For Global Heads of Data Center Energy, the operational question is whether this framework signals a broader shift in how environmental performance gets verified — and ultimately contracted.

90-Second Brief

Now, digital Realty’s Zurich facility ZUR2 has become the first data centre globally to receive the Swiss Datacenter Efficiency Association’s PLATINUM Plus certification. The standard evaluates facilities on independently verified operational data covering power, carbon, and water usage effectiveness. Digital Realty reports ZUR2 achieved a PUE of 1.10, a CUE of 0.02, and a WUE of 0.00, all recorded under live conditions rather than projected from design. The certification sets a new reference point for operational transparency in European colocation and raises the bar against which enterprise customers will increasingly assess provider sustainability claims.

What’s Actually Happening

Most sustainability accreditations in the data centre sector assess building specifications, planned systems, or design-stage assumptions. SDEA’s framework takes a structurally different approach: it measures what a facility actually delivers during operation. That distinction matters. A data centre can be designed to achieve leading efficiency and still underperform in production due to load profiles, cooling constraints, or grid characteristics that differ from modelled conditions.

ZUR2’s reported metrics — PUE of 1.10, CUE of 0.02, WUE of 0.00 — represent live operational performance at the Zurich site. The near-zero CUE reflects the facility’s carbon intensity per unit of energy consumed, the low-carbon character of the Swiss grid, and whatever energy procurement arrangements Digital Realty has in place there. The zero WUE figure indicates cooling systems consuming no water in operation — a priority gaining traction as water stress becomes a site-selection and regulatory variable in European markets.

Digital Realty has described this certification as part of a broader sustainability strategy focused on operational transparency across its global portfolio. The certification is currently specific to ZUR2 and Switzerland; the scope of any intended rollout to other sites is not confirmed in available reporting.

Why It Matters for Global Heads of Data Center Energy?

For energy leaders managing European colocation portfolios, SDEA’s PLATINUM Plus establishes a new tier of verifiable sustainability performance. The framework’s focus on live operational data aligns directly with where enterprise customers are driving procurement: toward auditable, third-party verified outcomes that can be linked to Scope 2 reporting and, increasingly, to 24/7 carbon-free energy matching commitments.

A CUE of 0.02 achieved under operational conditions implies near-complete alignment of consumed energy with clean supply at the facility level. This raises a hard question for operators who rely on renewable energy certificates without demonstrating live carbon intensity at the site level — because enterprise customers with their own net-zero commitments are increasingly capable of distinguishing between REC-based claims and verified real-time performance.

The WUE of 0.00 carries practical weight beyond optics. As European regulators increase scrutiny of data centre water consumption, zero water use in cooling represents both an operational advantage and a positioning tool in markets where water constraints are tightening. For energy heads evaluating European colocation options or benchmarking their own facilities, ZUR2 now provides a reference figure that enterprise customers can cite directly in procurement processes.

The Forward View

If SDEA’s operational-data model gains traction beyond Switzerland — whether through adoption by other national bodies or as an influence on EU-level data centre efficiency standards currently in development — the implications for energy procurement strategy are direct. A certification regime anchored to live CUE figures makes energy procurement a primary input to certification outcomes. PPA structure, REC quality, grid mix, and real-time carbon intensity all feed into what a facility’s CUE actually registers in production.

This creates a feedback loop: more rigorous energy procurement decisions improve certifiable sustainability performance, which translates to customer retention and pricing power in an increasingly competitive European colocation market. Whether European regulators or large enterprise customers move to require operational-data verification — rather than accepting design-stage performance claims — remains an open question. ZUR2’s certification provides a proof point that the standard is achievable at commercial scale. Digital Realty holds a first-mover position in this framework; whether competitors move to match it will be a signal worth tracking over the next 12 to 24 months.

What We’re Uncertain About?

  • Replicability across Digital Realty’s portfolio: ZUR2’s performance has been confirmed for the Zurich site only. Whether the combination of Swiss grid carbon intensity, cooling design, and energy procurement can be reproduced at Digital Realty’s other European or global facilities is not confirmed. Site-level audits under the same operational framework would be required to establish broader portfolio performance.

  • Energy procurement underpinning the CUE figure: A CUE of 0.02 depends on both facility-level efficiency and the carbon intensity of energy actually consumed. The specific procurement arrangements — PPA structures, grid mix contribution, timing of clean energy matching — behind this figure are not disclosed in available sources. Understanding that structure would clarify whether this represents a replicable procurement model or one that is particular to ZUR2’s circumstances.

One Question to Bring to Your Team

If a customer required SDEA PLATINUM Plus — or an equivalent operational-data certification — as a contractual condition for colocation, how would your current European facilities perform against live PUE, CUE, and WUE measurement today?

Sources

  • Datacentremagazine — Digital Realty’s Swiss Data Centre Raises Sustainability Bar (Link)

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