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France Eco-Energy Tertiary Decree (Décret Tertiaire)

France Eco-Energy Tertiary Decree (Décret Tertiaire): France’s Eco-Energy Tertiary Decree: Mandatory Energy Reductions for Large Buildings

Maílis Carrilho
Written by Maílis Carrilho
Updated on December 1st, 2025

Summary

The French Eco-Energy Tertiary Decree (Décret Tertiaire) mandates significant energy-consumption reductions in large tertiary buildings. Owners and operators must cut final energy use by 40% by 2030, 50% by 2040, and 60% by 2050, relative to a validated baseline. They must report annual data through the OPERAT platform, define a reduction strategy, and implement efficiency measures based on building type, occupancy, and technical constraints. Exemptions apply to buildings under 1,000 m², temporary structures, and cases where reductions are proven technically or financially impossible. Non-compliance can lead to administrative fines and public naming. The decree is a central pillar of France’s building-sector decarbonisation strategy.

Details

Jurisdictions
  • France
Exemptions

The Décret Tertiaire is fully binding for owners and operators of tertiary buildings above the regulatory thresholds in France.

Criteria:

Reduce final energy consumption of eligible tertiary buildings by:
40 percent by 2030,
50 percent by 2040,
60 percent by 2050,
compared with a selected baseline year.

Submit annual energy data through the national digital platform OPERAT.

Define an energy reduction action plan appropriate to the building type and uses.

Maintain documentation to justify baseline selection and reduction pathways.

Implement corrective measures if annual reporting indicates deviation from required trajectories.

Exceptions:

Buildings or portions of buildings below 1,000 m² are exempt.

Temporary buildings or structures used for less than two years are excluded.

Buildings linked to national defense or security may be exempt from full reporting obligations.

Some site-specific exceptions apply where reduction targets are technically or economically impossible; justification must be validated through OPERAT.

Deep dive

1 min read
Published Dec 1, 2025

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What’s Required

  • Annual reporting on OPERAT.

  • Implementation of energy-saving measures.

  • Verification of consumption data and compliance trajectories.

  • Retention of evidence for audits.

Important Deadlines

  • Annual reporting is required each 30 September for the previous year.

  • First milestone target year: 2030.

Current Status

  • Fully in force since 2022, with reporting obligations already active.

  • No major legal challenges threaten the validity of the decree.

  • Enforcement actions are expected to intensify toward 2030.

Penalties for Non-Compliance

  • Financial penalties for failure to report or failure to implement corrective actions.

  • Publication of non-compliant entities (“name and shame” mechanism).

  • Administrative orders to submit missing data or implement measures.

Examples of Known Violations

As of November 2025, no publicly disclosed enforcement cases have been published, but several warnings have been issued via OPERAT for missing or incomplete reporting.

Resources


Maílis Carrilho
Added by:
Maílis Carrilho
Sustainability Research Analyst
Maílis Carrilho is a Sustainability Research Analyst (Intern) at Net Zero Compare, contributing research and analysis on climate tech, carbon policies, and sustainable solutions. She supports the team in developing fact-based content and insights to help companies and readers navigate the evolving sustainability landscape.
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Added on Dec 1, 2025 by Maílis Carrilho ·