The BACS decree is a measure implemented to accelerate the development of Building Management Systems (BMS), with the aim of optimizing energy consumption across various buildings. These BMS, also referred to as Building Technical Management systems, will become mandatory for numerous commercial buildings starting January 1, 2025. This new decree is a continuation of the tertiary eco-energy decree. It is crucial to understand the BACS decree's objective, its regulatory framework, and its implementation.
💡 Understanding the BACS Decree in Depth
The BACS decree is mandated by the European directive, as part of the provisions for building energy performance. Discover the definition of this decree and its key objectives. In this context, it is crucial to understand the role and functionalities of Building Management Systems (BMS), and the impact of the BACS decree on the commercial sector.
Definition and Key Objectives
BACS is an English acronym for Building Automation & Control Systems. The purpose of the decree is to define the various techniques and methods for achieving the objectives set by the tertiary decree, which aims to reduce consumption in the sector. The BACS decree, implemented on July 20, 2020, mandates a building automation and control system, which will come into effect on January 1, 2025.
The BACS decree applies to non-residential commercial buildings equipped with a heating or air conditioning system with a nominal power exceeding 290 kW. This system may or may not be combined with a ventilation system. When the power exceeds 70 kW, the requirement must be met from 2027 onwards.
Deadline
January 1, 2025
BMS Systems: Role and Functionalities
Building Management Systems (BMS) are mandated by the BACS decree as automation and control systems. The objective of BMS is to provide comprehensive supervision of technical installations to optimize a building's energy performance.
BMS systems have several functionalities to fulfill their role:
- continuous monitoring, recording, and analysis
- assess energy efficiency
- autonomous management
- ability to communicate with other systems
How does the BACS decree transform the commercial sector?
Although the BACS decree adds another obligation for the commercial sector, the energy performance of tertiary buildings will be improved to encourage the ecological transition of the building / construction sector.
🔍 Detailed Analysis of BACS Regulation
To better understand BACS regulation, explore its criteria and requirements, as well as building categorization and the decree's applicability. There is also an implementation schedule and mandatory deadlines to consider.
Specific Criteria and Requirements of the Decree
The BACS decree must enable the monitoring, recording, and analysis of a building's energy consumption data, as well as the real-time adjustment of consumption for various technical systems, based on its needs.
The BACS decree must be capable of detecting and alerting operations managers if consumption deviates, even without functional defects. This helps avoid overconsumption and additional maintenance costs.
Building Categorization and Applicability
The buildings affected by the BACS decree are those housing commercial activities and equipped with a heating system with a nominal power exceeding 70 kW.
This is not mandatory for existing buildings that can demonstrate the installation of such a system would not be feasible, based on a return on investment of less than 10 years.
Implementation Timeline and Key Deadlines
For powers exceeding 290 kW, the system must be implemented before 2025, and before 2027 for powers exceeding 70 kW. As of April 7, 2023, a new provision of the decree mandates periodic inspection of control systems, to be conducted every 2 to 5 years.
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⚙️ Technical and Technological Implications of the BACS Decree
The BACS decree requires significant technical and technological involvement, particularly regarding various innovations in BMS (Building Management Systems) that will impact energy performance.
BMS Innovations and Impact on Energy Performance
BMS significantly impacts the energy efficiency of buildings. Indeed, the intelligent programming inherent in these systems optimizes energy resources and their utilization, adapting to occupant needs.
Standard NF EN ISO 52120-1: 2022 and its Application
The new NF EN ISO 52120-1 standard requires BMS to provide a multitude of control functions, including Class B or A functions, such as energy monitoring.
BMS Class A to C Systems: Comparison and Advantages
According to standard EN-15232, BMS systems are classified by their performance. Class A corresponds to high-energy-performance BMS. Class B refers to advanced BMS, while Class C corresponds to standard BMS, which is used as a reference.
By upgrading from Class C to B, you benefit from 15% energy savings, and upgrading from Class C to A offers between 25 and 30% energy savings.
📈 Funding and Subsidies: Leveraging Energy Savings Certificates (CEE)
To subsidize the installation of a BMS in your building, you can apply for CEE premium schemes.
Understanding Energy Savings Certificates (CEE)
Energy Savings Certificates, or CEE premiums, are private aid provided by fuel and energy suppliers.
Examples of BMS Projects Funded by CEE
To be eligible for CEE funding for your project, it must involve the “implementation of a building technical management system for heating and, where applicable, domestic hot water, cooling/air conditioning, lighting, and auxiliaries.”
For example, the installation of a new Class A BMS in a 10,000 m² logistics warehouse.
Guide to Obtaining CEE Subsidies for Your BMS Project
To obtain CEE subsidies, prior to submitting an application, you must verify that you meet certain conditions:
- tertiary building over 2 years old
- new BMS acquisition, or upgrade of an existing BMS
- the BMS must be Class A or B
📝 Practical Implementation of the BACS Decree
Depending on your building, it is therefore essential to prepare for compliance with the BACS decree, and ensure a smooth transition towards improved energy performance.
Key Steps for Decree Compliance
The first step towards decree compliance is to regulate ventilation, air conditioning, heating, and refrigeration equipment, as these systems are significant energy consumers.
Next, choose your type of regulation, from programmed, reactive, or predictive regulation. This enables energy savings as well as financial benefits.
Inspections and Frequencies: What You Need to Know
Inspections will take place every 2 to 5 years, and will involve monitoring the proper functioning and calibration of the BMS system, not just its installation!
Tips for a Successful Transition to BACS Compliance
To achieve a successful transition to BACS compliance, it is essential to implement a gradual transition, to learn about the decree and its objectives, and also to apply for an Energy Savings Certificate (CEE) bonus for adequate financial support.
🌎 The BACS Decree as a Lever for CSR
The tertiary sector decree mandates a reduction in building energy consumption of approximately 40% by 2030, and 60% by 2050. The BACS decree therefore supports this initiative, and represents a genuine opportunity for companies that prioritize energy transition and CSR.