Regulatory energy audit (France)
Quadrennial obligation for large companies and entities consuming more than 2.75 GWh of final energy
The DDADUE energy audit (article L.233-1 of the French Energy Code, transposing EU Directive 2012/27 and the EED 2023/1791) requires large companies to undergo a complete audit every four years. The 2024 regime refocuses the obligation on a consumption threshold of more than 2.75 GWh of final energy averaged over the last three years. The audit, compliant with NF EN 16247:2022, must cover at least 80% of consumption and conclude with a costed action plan. NORMAXIS steers the process in coordination with qualified partner auditors.
2024 regime shift
The threshold has changed: 2.75 GWh of final consumption replaces the headcount/turnover criterion.
The transposition of the EED 2023/1791 by the French DDADUE law and its implementing decrees has evolved the scope. Since June 2024, any entity — regardless of headcount or turnover — whose annual final-energy consumption exceeds 2.75 GWh (about 236 toe) averaged over the last three years must conduct an audit compliant with NF EN 16247:2022 and submit the report on ADEME's AIDER platform.
Scope threshold
> 2.75 GWh/year averaged over 3 years (final energy)
Periodicity
4 years — rolling cycle since 2015
Filing platform
AIDER — ADEME (aider.ademe.fr)
Scope
Who must conduct a DDADUE audit?
Since 2024, the obligation applies to any company, public body or economic entity consuming more than 2.75 GWh of final energy per year averaged over the last three operating years (article L.233-1 of the French Energy Code as amended by the DDADUE law).
The new criterion replaces the former dual threshold (headcount > 250 OR turnover > €50M with balance sheet > €43M) inherited from Directive 2012/27/EU. Switching to a consumption-based criterion targets high-energy-impact entities regardless of commercial size.
Audit perimeter:
- The audit must cover at least 80 % of the company's total energy bill (order of 20 May 2015 as amended and order of 24 June 2024).
- It covers all energy vectors: electricity, gas, district heating networks, fuels, biomass, fuel oil, LPG.
- It distinguishes buildings (NF EN 16247-2), processes (NF EN 16247-3) and transport (NF EN 16247-4) uses.
- It is delivered by an external qualified auditor (OPQIBI 18.01 buildings, 18.02 processes, 18.03 transport, or European equivalent qualifications), or by a qualified internal auditor for companies with recognised in-house competence.
ISO 50001 exemption: a company certified ISO 50001 on a scope covering at least 80 % of its consumption is exempted from the DDADUE audit (article L.233-2 of the French Energy Code). The certification must be in force and properly renewed.
Regulatory framework
The texts to know.
- Directive 2012/27/EU of 25 October 2012 — Energy Efficiency Directive (EED), article 8: EU basis of the audit obligation for large companies.
- EED Directive 2023/1791 of 13 September 2023 — recast of the EED, transposition by 11 October 2025. Lowers thresholds and reinforces consistency with the "Fit for 55" package.
- French Law no. 2013-619 of 16 July 2013 — known as "DDADUE" (Provisions adapting to EU law): first transposition of Directive 2012/27/EU.
- French Law no. 2023-171 of 9 March 2023 — DDADUE 2023 law: evolution of the audit regime.
- Decree no. 2014-1393 of 24 November 2014 and decree no. 2023-444 of 7 June 2023 — application terms and shift to the 2.75 GWh threshold.
- Articles L.233-1 to L.233-5 and R.233-1 to R.233-9 of the French Energy Code — codification of the obligation, auditor competences, report content and sanction regime.
- Order of 20 May 2015 as amended and order of 24 June 2024 — technical application terms: 80 % perimeter, report content, required qualifications.
- Standard NF EN 16247:2022 — energy audit method. Five parts: general requirements (-1), buildings (-2), processes (-3), transport (-4), auditor competences (-5).
- AIDER platform — ADEME — official report-filing portal (aider.ademe.fr).
Audit content
What a complete NF EN 16247 audit produces.
NF EN 16247:2022 structures the audit into six phases. The final deliverable is an audit report and a costed action plan, usable to arbitrate energy investments and feed a potential ISO 50001 management system.
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1
Preliminary contact and framing
Definition of audit perimeter, identification of covered sites and activities, selection of energy vectors and dominant uses, target performance criteria, schedule and expected deliverables.
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2
Kick-off meeting and data collection
Collection of energy invoices for the last three fiscal years, plans and technical schematics, equipment inventories, production data, operating hours, usage procedures. Mapping of existing meters.
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3
Site visit and measurements
Field observation, instrumented readings (thermography, network analysers, flow meters, wattmeters), check of BMS setpoints and control loops, verification of load factors and efficiencies, interviews with operators.
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4
Analysis and modelling
Calculation of energy performance indicators (EnPI) by use, sector benchmarking, identification of gaps, modelling of improvement scenarios, evaluation of expected energy savings and payback times.
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5
Audit report and action plan
Structured report compliant with NF EN 16247: executive summary, energy mapping, prioritised action plan (savings, CAPEX, OPEX, payback, CEE energy-saving certificates), recommendations for follow-up and durability.
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6
AIDER ADEME submission and feedback
Structured submission of the report and action plan on ADEME's AIDER platform, validation of compliance with the expected format, filing certificate, oral feedback to management and operational teams.
DDADUE audit benchmarks
Key thresholds to remember.
2.75 GWh
Scope threshold
Decree no. 2023-444 — final consumption average 3 years
4 years
Audit cycle
Article L.233-1 French Energy Code
80 %
Minimum coverage
Total energy bill — order of 20 May 2015 as amended
2 %
Max fine on excl. VAT turnover
Non-compliance sanction — article L.233-5
Related schemes
Neighbouring obligations to align.
NORMAXIS
French Tertiary Decree
For tertiary buildings ≥ 1,000 m²: the actions identified by the DDADUE audit feed the −40 %/−50 %/−60 % trajectory.
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MEP engineering office
Implementation of audit-driven actions: HVAC optimisation, BMS control, equipment replacement.
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NORMAXIS
CSRD — sustainability reporting
Audit data feed ESRS E1 climate (Scope 1-2 emissions) and CSRD reporting.
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