Europe Forced Data Centers to Show Their Numbers. Most Couldn’t.

Why It Matters

Accurate, comparable sustainability data is essential for EU climate goals and for investors assessing the digital infrastructure’s environmental impact. The reporting shortfall highlights a readiness gap that could delay policy effectiveness and market transparency.

Key Takeaways

• Only 36% of EU data centers submitted sustainability data.
• Colocation model fragments tenant-level metrics, hindering full reporting.
• Inconsistent definitions cause unreliable water‑usage and heat‑reuse figures.
• Median energy use far lower than average, indicating skewed dataset.
• Regulators plan tighter PUE and renewable targets despite data gaps.

Pulse Analysis

The EU’s revised Energy Efficiency Directive obliges data‑center operators above a size threshold to feed energy, water and sustainability metrics into a pan‑European repository. The ambition is to create a common baseline for measuring the sector’s carbon and resource footprint as demand for cloud compute surges. The first reporting cycle, however, revealed that only about 36 % of the roughly 2,000 facilities – 770 sites – actually submitted data, and many of those entries were incomplete or contradictory, undermining the credibility of the nascent database.

A major source of the shortfall lies in the dominant colocation model, where providers own the building and power infrastructure while tenants retain control of servers and telemetry. This split forces providers to report only facility‑level figures such as electricity and water, leaving performance‑level data – traffic, storage, compute – in the hands of multiple customers. Coupled with divergent metric definitions, such as water‑usage effectiveness that tracks input rather than consumption, the result is a patchwork of partial, sometimes implausible, figures that impede meaningful cross‑border benchmarking.

Regulators are already drafting tighter PUE targets, higher renewable‑energy shares and stricter water‑use constraints, but the current data gaps expose a readiness gap across the industry. Legacy sites lack the sensors needed for granular monitoring, while smaller operators struggle with the administrative burden of multi‑tenant data collection. The Borderstep Institute’s analysis suggests that automated validation at entry points and harmonised definitions could lift reporting quality in the upcoming cycle. If the EU can close these gaps, the database could become a powerful tool for investors, policymakers and operators seeking to decarbonise Europe’s digital backbone.