The BACS decree, made clear.
Decree no. 2020-887 of 20 July 2020, amended by decree no. 2023-259 of 7 April 2023 (articles R. 175-1 et seq. of the French Construction and Housing Code). It mandates a BMS in commercial buildings based on the power of the HVAC systems.
New commercial buildings whose permit was filed after 8 April 2024.
Existing commercial buildings equipped with HVAC systems above 290 kW.
Deadline postponed by the decree of 26 December 2025 (previously 2027). This is the next major deadline for the existing building stock.
Triggering criterion
The combined rated useful power of the heating, cooling and ventilation systems, not the floor area.
Possible exemption
If a study demonstrates a payback period longer than 10 years.
What a compliant BACS must do.
Track consumption
Measure and record consumption at hourly intervals, by functional zone.
Analyze performance
Analyze and benchmark the energy performance of the installations.
Detect and alert
Detect operating drifts and alert facility operators.
Be interoperable
Communicate across equipment and brands, without proprietary lock-in.
Control and manual shutoff
Allow manual shutoff and autonomous management of the connected systems.
Archive for 5 years
Retain the recorded data for at least 5 years.
An inspection is required within 2 years of installation or replacement of the system, then at most every 5 years.
The BMS takes control of your systems.
We connect your technical equipment to a single BMS that supervises and operates it continuously.
From audit to continuous operation.
Technical site audit
Survey of the HVAC, controls and existing networks.
Compliant BMS architecture
Class A/B (NF EN ISO 52120-1), calculation of the return on investment and available subsidies.
Installation and deployment
Integration and commissioning with on-site project supervision.
Maintenance and AI-driven operation
Remote operation and control from the BOS, continuously.
An open foundation, without lock-in.
Multi-vendor integration
Honeywell/Niagara, Trend, Siemens, Distech, Schneider. A single open architecture.
Open protocols
BACnet IP, BACnet/SC, Modbus, M-Bus, KNX, LonWorks, MQTT.
BACS compliance
Class A and B per NF EN ISO 52120-1:2022.
Supervision and EMS
Centralized web supervision and continuous energy management.
Cybersecurity by design
IT/OT segmentation, TLS 1.3, certificate-based authentication, RBAC, audit log.
Retrofit and migration
Controller modernization on occupied, in-operation sites.
Our BMS supervision interfaces.
Solutions compliant with the NF EN ISO 52120-1:2022 standard on the energy performance of building automation and management systems.