How data centre efficiency solves the 2026 ESG reporting challenge

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ESG reporting is moving from the back office to the boardroom. Under the latest UK mandates, sustainability disclosures must be integrated into the annual financial report. This transition ensures they carry the same weight of director accountability and governance as traditional financial statements. These disclosures will be signed off by directors, with a new requirement to explicitly state the level of third-party assurance and audit treatment applied to the data.

For many businesses, this presents a fresh set of issues, and data centres have become pressure points. Ineffective or secretive practices can bring about legal, reputational, and financial risk. Beyond environmental concerns, this is a fundamental governance issue. Your data infrastructure management directly impacts ESG credibility, investor confidence, and potential personal liability.

The 2026 ESG reporting landscape

Fully in line with ISSB guidance, the final UK SRS S1 and S2 standards were issued in February 2026 for immediate voluntary use. The ISSB provides the global baseline for these disclosures to certify that sustainability data is as consistent and reliable as financial accounting. These new standards are designed to modernise and eventually succeed the SECR framework. While SECR focused primarily on reporting energy totals, the new UK SRS requires companies to demonstrate how climate risks impact their long-term financial value. This shift introduces mandatory, director-signed and assurance-graded ESG reporting from January 2027. Corporations can no longer rely on high-level narratives. Every disclosure now requires traceable, defensible evidence.

There is a transition window. Companies get a two-year reprieve from climate-related reporting obligations, allowing them to focus on energy and emissions data. This makes infrastructure energy reporting the most quantifiable and auditable starting point, and the most efficient path to becoming fully ESG-compliant.

Datum is a year-1 pragmatic solution. We are a verified partner for ESG directors, offering GRESB-rated data infrastructure and a low design PUE. Our systems provide meter-verified energy data at source, enabling truly credible emissions reporting from the start. In practice, Datum’s facilities ensure energy use is measurable, traceable, and defensible under scrutiny. This removes one of the most significant layers of ESG risk.

Why data centres are ESG pressure points

Data centres are long-duration emitting assets. Cooling systems and power supplies run continuously, while backup generators are regularly tested and occasionally activated, contributing to overall scope 1 and 2 emissions. The new SRS S1 and S2 UK ruleset brings purchased infrastructure into Scope 3. This is compounded by the fact that your third-party data centres are also directly affecting your ESG audit risk.

Auditors need an emissions lineage. They want to see where the numbers come from, how they are measured, and whether the methodology is independently verifiable. Without that, infrastructure is a blind spot in your reporting.

Datum eliminates that blind spot. Our real-time, meter-level reporting gives you a complete audit trail from energy consumption to emissions estimates. Estimation risk disappears, and ESG teams end up with data that is not just accurate but also audit-ready. Transparent and efficient data centres reduce reporting overheads while mitigating potential liability.

Efficiency is a balance sheet solution

ESG compliance carries direct financial consequences rather than being a purely regulatory exercise. Soaring numbers of British firms are adopting internal carbon pricing (CFP Energy, 2025), meaning that inefficient third-party infrastructure now carries a direct, measurable cost on a client’s internal balance sheet. Every tonne of CO₂ can be priced, which, in turn, translates into financial exposure to emissions. Inefficient infrastructure increases the cost, whereas efficient systems reduce it.

Datum’s performance illustrates this clearly. As an active participant in the Global Real Estate Sustainability Benchmark (GRESB), we were ranked number 1 in our European peer group in 2025 with a score of 93/100. Governance came in at 23/24 and management at 37/40, which are significantly above sector benchmarks. This shows that Datum offers IFRS S1-aligned governance strength alongside engineering excellence.

For CFOs, this matters. Efficient, well-governed infrastructure reduces reporting overhead, minimises estimation risk, and boosts credibility with both auditors and investors. GRESB validation also provides the third-party assurance most ESG auditors prefer. In practice, this allows you to reduce time spent defending numbers and increase focus on strategic carbon reduction.

Tackling greenwashing and data integrity

Legal compliance is a critical factor when reporting on ESG. According to CMA guidance and the DMCC Act 2024, businesses may be liable for repeating false information about a supplier’s environmental sustainability claims. Penalties can be as high as 10% of worldwide turnover. Even nonprofits and “100% renewable” declarations based solely on REGOs are coming under increasing challenge.

Estimation risk is a legal liability as much as a logistical inconvenience. Datum solves this by enabling the use of real-time, verified, metered energy usage instead of soft estimates. With our systems, companies can provide proof for any claim they make and eliminate the risks of greenwashing or audit non-compliance. Audit-ready infrastructure safeguards the company and its directors, transforming legal liability into a manageable part of your ESG strategy.

Sovereign sustainability: solving the dual mandate

The UK’s Cyber Security and Resilience Bill has added an extra layer of obligation. Data centres with a capacity greater than 1MW are now classified as Critical National Infrastructure, so firms must adhere to sustainability and security standards. Older sites have struggled to meet the dual demands of energy efficiency and regulations.

Datum’s London–Manchester presence serves this two-pronged requirement. We provide data residency, infrastructure sovereignty, and strong carbon reporting in secure, resilient facilities. When constructing MCR2, we integrated closed-loop heat reuse technology to allow the capture of waste heat, which can be used to warm a development of new homes planned adjacent to our data centre. This approach demonstrates sovereign sustainability, showing that energy efficiency and compliance are compatible with addressing a country’s digital infrastructure requirements.

Strategic selection of the location also serves as a solution. By placing facilities on key transit lines, Datum minimises carbon footprint and regulatory overhead, ensuring that firms’ ESG and security requirements are met.

Future-proofing your data strategy

Data centre strategy now influences ESG audit results, director liability, and the credibility of carbon reporting. These factors far exceed simple questions of uptime or cost. Efficient and transparent infrastructure is an essential control lever for ESG and a competitive advantage.

You do not want your data centre to be an auditing bottleneck. Ensure your 2026 infrastructure data is audit-ready and compliant with the latest UK standards. Book an appointment with a Datum expert today to learn how our GRESB-rated facilities can help you de-risk your upcoming sustainability disclosures.

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