BACS Decree

Turnyour regulatory compliance into an opportunity for energy efficiency improvements. Powesco conducts the audit, deploys the necessary equipment, and supports you until you achieve a compliant and high-performing system.

Check my compliance Our offers

Compliance audit included
Regulatory Evidence File
Deployment in 4–10 weeks

Check my BACS compliance

An expert will call you back within 48 hours — no obligation

Response within 48 business hours
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WHAT IS THIS

A regulatory requirement that also improves energy performance

In practice

Obligation
Commercial and industrial buildings with a nominal HVAC power exceeding 290 kW
Deadline
January 1, 2025 for existing buildings — the obligation is in effect
Deadline
2 to 6 weeks for the audit. Upgrade work: 4 to 10 weeks
Deliverable
BACS audit report + supporting documentation + certificate of conformity

BACS compliance is not just about installing a BMS.

It involves the implementation of functionalities to monitor consumption, detect anomalies and automatically optimize the building's technical equipment.

Powesco handles the entire process: compliance audit, action plan, deployment, configuration and preparation of the regulatory file.

BACS compliance audit with detailed gap report
Costed compliance plan per action
Deployment of missing automation systems and sensors
Setting up mandatory functions (ranges, instructions, indicators)
Regulatory evidence file + SEME NEXTEP connection

What BACS compliance brings

Evidence file

transmittable to the administration
20–35%

bonus HVAC savings
< 2 years

ROI of upgrade work
SEME NEXTEP

ongoing post-compliance monitoring

Step 1

Compliance audit

Analysis of your facilities in relation to BACS functional requirements. Identification of discrepancies. Audit report with a costed compliance plan per action.

Step 2

Compliance plan

For each identified gap: corrective action, required equipment, cost and time estimate. Prioritization based on risk level and your operational constraints.

Step 3

Deployment in an occupied site

Installation of required PLCs, sensors and interfaces. Configuration of mandatory functions: ranges, setpoints, performance indicators. No business interruption.

Step 4

Evidence file and SEME NEXTEP connection

Preparation of the complete regulatory file. Connection to SEME NEXTEP for continuous monitoring and automatic generation of performance reports.

Arnauld Mahé

Sales Director at Powesco

THE EXPERT'S WORD

BACS: Compliance today, savings tomorrow

BACS compliance is mandatory—but it's also an opportunity. The equipment it requires is precisely what optimizes HVAC energy consumption. Our clients who comply consistently achieve 20 to 35% savings on their HVAC bills.

SEME NEXTEP Platform

Our platform centralizes your energy data: sub-metering by usage, automatic alerts, configurable dashboards and integrated Tertiary Decree reporting. Single or multi-site.

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Energy optimization

Our engineers analyze your consumption monthly, detect deviations and faulty equipment, and implement adjustments. Monthly report with actionable recommendations.

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Energy purchase

Analysis of your contracts and consumption profiles, tendering to 10+ suppliers, customized purchasing strategy. Contract monitoring and renegotiation alerts.

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79,171 m² Area

ESCO 5-year contract

€5.8 million Amount funded

La Défense (92) • 40 floors

HVAC Energy Management GTB offices

EQHO Tower — Paris La Défense

Energy performance as a lever for profitability

Complete energy transformation of a 79,200 m² office tower with €5.8 million in financing over 5 years. Deployment of an advanced building management system and HVAC optimization to maximize performance without compromising comfort.

Challenges

Improve the energy performance of the tower while optimizing operating costs without impacting occupant comfort.

Work completed

• Deployment of an advanced building management system (BMS)
• Optimization of HVAC systems
• Comprehensive energy audit

Measured impact

-24 % energy savings / year

-32 % carbon emissions

Read the full case

Offices Energy Audit HVAC BMS

Franklin Tower — Paris La Défense

Measured impact

-37 % 5,950 MWh of energy savings per year

-32 % carbon saving

Read the full case

Hospitality GTB Relamping

Mercure Courbevoie — La Défense Hotel

Measured impact

-21 % energy savings / year

-29 % carbon emissions

Read the full case

Frequently Asked Questions

Do you have an energy efficiency project, questions about financing or regulatory obligations? Our experts are here to help.

Speak to an expert

What functions must a BACS-compliant system perform?

Continuous energy consumption monitoring, automatic HVAC control based on occupancy schedules, performance indicator reporting, and anomaly detection with notification. A simple programmable thermostat is not enough.

What happens if my building is not yet in compliance?

Does the BACS Decree also apply to industrial buildings?

Can the BACS system be connected to SEME NEXTEP?

Does BACS compliance generate savings?

Need help with your project?

Customer service available
Monday to Friday from 9am to 12pm

01 84 19 86 88

contact@powesco.fr

Head office

77, rue Marcel Dassault -
92100 Boulogne-Billancourt

Personalized support

Our experts will guide you towards solutions tailored to your energy challenges.

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BACS Decree

A regulatory requirement that also improves energy performance

What BACS compliance brings

BACS: Compliance today, savings tomorrow