Resource
BACS requirements: capabilities and evidence
A credible BACS readiness review looks past whether a building carries a "BMS" label and asks what the system can actually do. This checklist sets out the core capabilities a compliant system needs under EPBD Article 13, and the evidence that turns a controls claim into a reviewable position.
Core capabilities
EPBD Article 13 expects performance, not just presence of controls. The reference standard is EN ISO 52120-1 (formerly EN 15232), and Class C is the minimum acceptable automation level. In practice that breaks down into four capability areas:
Continuous energy monitoring
The system must continuously record energy consumption of technical building systems and make the data available for analysis — not just meter totals, but enough granularity to see how heating, cooling, and ventilation actually perform over time.
Performance benchmarking & drift detection
Monitoring is only useful if it is compared against expectation. A compliant BACS benchmarks live performance against expected efficiency and flags faults, losses, and gradual drift before they become large energy or comfort problems.
Operator information
Facility teams need actionable information: clear dashboards, alerts, and trends that tell them what to act on. Data that no one can interpret does not meet the intent of Article 13.
Demand-based control & interoperability
The system should adjust HVAC to actual demand rather than fixed schedules, and integrate across connected technical systems. EN ISO 52120-1 Class C is the minimum automation level expected.
Evidence records
Evidence is what turns a controls claim into a reviewable readiness position. Before the deadline, assemble:
- an equipment list with effective rated output records for each system;
- controls architecture or system diagrams showing what is connected;
- trend logs, dashboards, and alert records demonstrating live monitoring;
- commissioning and maintenance records;
- representative room or indoor-environment monitoring evidence where relevant.
To confirm which threshold and deadline apply to a specific building, start with the scope checker, then read the EPBD guide for the directive context behind these requirements.
Run the capability checklistOfficial sources anchor legal and policy claims. Industry guidance can explain practical readiness, but it is not presented as law. Demo assumptions are labelled and must be replaced with verified project data before decisions.
Review source authority levelsThis checklist is indicative planning guidance, not certification criteria. Confirm exact requirements against your national transposition and a qualified adviser.