From September 2026, Schedule 4 Type 10 and 11 data centres must complete a BEEO energy audit of CBSI every 5 years, by a Registered Energy Assessor. There is no 7,000 m² exemption for data centres.
AI density will collide with this cycle. Halls being retrofitted to 40 kW+ racks will be audited on CBSI that no longer resembles the as-built drawings on file. Operators who treat the audit as a paper exercise will spend the cycle firefighting.
The same hierarchy and telemetry that make energy audits tractable also make reliability engineering tractable. Chillers, CRAHs, CDUs and PDUs appear in both PUE boundaries and FMEA worksheets. Running two programmes that never share an asset model is wasted effort.
Operators who use the audit as a forcing function to refresh hierarchy, prioritise energy management opportunities by criticality, and encode them as FMEA-backed strategies will have compounding evidence for the next cycle — and for HKMA-driven tenant conversations in between.
Practically: one asset model, two consumers (REA pack and reliability retainer). That is how ReliDC structures joint BEEO / reliability assessments.
Do not wait for the REA to discover your hierarchy is stale. Fix it now, under your control, on your timeline.
- AI retrofits invalidate as-built CBSI drawings — refresh before audit.
- One asset model should feed both BEEO and reliability programmes.
- Prioritise EMOs by criticality, not by consultant preference.
- Use the audit cycle as a board-visible reliability milestone.
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