FAQArticle 11EU

EU Energy Efficiency Directive Article 11 Threshold calculation for 85 TJ and 10 TJ enterprise scope

Article 11 uses average annual enterprise energy consumption over the previous three years, taking all energy carriers together.

Use this FAQ to separate the 85 TJ energy-management-system threshold from the 10 TJ energy-audit threshold and to keep the evidence needed for national implementation checks.

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Author
Sorena AI
Published
May 9, 2026
Updated
May 9, 2026
Questions
4

Structured answer sets in this page tree.

Primary sources
6

Cited legal and guidance references.

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Sorena AI
Published May 9, 2026
Updated May 9, 2026
Overview

Under Article 11 of Directive (EU) 2023/1791, threshold calculation is an enterprise energy-consumption test. The key questions are whether the enterprise averages more than 85 TJ or more than 10 TJ over the previous three years, whether all energy carriers have been included, and how the result is documented for the Member State rules that transpose the Directive.

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4 of 4 questions
Question 1

How should an enterprise calculate the EED Article 11 threshold?

Calculate the threshold at enterprise level using average annual energy consumption over the previous three years. Article 11 says the calculation takes all energy carriers together, so the file should not isolate only electricity, only gas, only one site, or only one business unit if the enterprise boundary is broader under the applicable national rule.

If the enterprise is above 85 TJ, Article 11 points to an independently certified energy management system. If it is above 10 TJ and does not implement an energy management system, Article 11 points to an energy audit obligation. The 10 TJ test is not a smaller version of the 85 TJ duty; it is the audit threshold for enterprises that do not have an energy management system.

  • Set the enterprise boundary used for the calculation and note the national-law basis for that boundary.
  • Gather energy consumption for each of the previous three years and include every energy carrier used by the enterprise.
  • Convert consumption into a common unit, keep the conversion factors, and calculate the three-year average annual total in TJ.
  • Classify the result as above 85 TJ, above 10 TJ but not above 85 TJ, or not above 10 TJ for the period reviewed.
  • Recheck the calculation when acquisitions, disposals, site openings, major production changes, or national transposition rules change the enterprise boundary or data basis.
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Question 2

What does each Article 11 threshold trigger?

The 85 TJ threshold is the higher-consumption trigger. Article 11 requires Member States to ensure that enterprises above that average annual consumption implement an energy management system, certified by an independent body in accordance with relevant European or international standards.

The 10 TJ threshold applies to enterprises with average annual consumption above 10 TJ over the previous three years that do not implement an energy management system. Those enterprises are subject to energy audits. Article 11 also states that the first audit for the covered enterprises is due by 11 October 2026 and subsequent audits are at least every four years, while the energy management system for the 85 TJ group is to be in place by 11 October 2027.

  • More than 85 TJ: plan for an independently certified energy management system.
  • More than 10 TJ and no energy management system: plan for an Article 11 energy audit.
  • At or below 10 TJ: keep the calculation record and monitor future annual consumption, but do not infer an Article 11 audit obligation from the EU threshold alone.
  • Any one year above the relevant threshold can trigger national reporting of that information to the authority responsible for Article 11 implementation.
Citations
Question 3

Which records should support the threshold calculation?

Keep the calculation pack close to the consumption data, because Article 11 threshold status depends on measured energy use rather than employee headcount or turnover. A reviewer should be able to see the enterprise boundary, the three annual totals, the energy carriers included, conversions to TJ, and the conclusion reached for the 85 TJ and 10 TJ tests.

If the result leads to an audit, Annex VI says energy audits should be based on up-to-date, measured, traceable operational data on energy consumption and, for electricity, load profiles. That same standard is a useful evidence discipline for the threshold file even before an audit starts.

  • Enterprise boundary memo, including subsidiaries, sites, facilities, and exclusions assessed under national implementation rules.
  • Three-year energy register showing each carrier, annual quantity, source meter or invoice, and responsible data owner.
  • Conversion workbook showing units, conversion factors, assumptions, and the resulting annual TJ totals.
  • Threshold conclusion showing whether the enterprise is above 85 TJ, above 10 TJ, or below both thresholds.
  • Approval record from energy, finance, legal, or sustainability owners before the conclusion is used in reporting or audit planning.
  • Change log for material corporate, operational, or data-quality changes that could affect the next calculation.
Citations
Question 4

What national-transposition caveats matter most?

Directive (EU) 2023/1791 sets the EU-level Article 11 framework, but enterprises should check the Member State rules that transpose it. National law and authority guidance can affect the reporting channel, evidence format, audit supervision route, enforcement process, and how the enterprise boundary is handled in practice.

Do not add penalties, exemptions, or local filing dates to a threshold conclusion unless they come from the relevant national source. For this FAQ, the grounded EU answer is limited to the 85 TJ and 10 TJ Article 11 tests, previous-three-year averaging, all energy carriers together, the audit and energy-management-system consequences, and the need to retain traceable records.

  • Check whether the Member State uses a platform or other process for annual threshold information.
  • Check the national authority's preferred unit conversions, evidence format, and auditor or certification requirements.
  • Check whether local rules clarify enterprise-group boundaries, mergers, acquisitions, or partial-year data.
  • Keep the EU Article 11 calculation separate from any national penalty, enforcement, or filing analysis unless the national source is attached.
Citations
Primary sources

References and citations

Directive (EU) 2023/1791 on energy efficiency
eur-lex.europa.eu
Referenced sections
  • Primary legal source for Article 11 thresholds, energy-management-system and audit consequences, previous-three-year averaging, all-carrier calculation, national-authority information, and Annex VI audit data criteria.
"average annual consumption higher than 10 TJ"
Directive (EU) 2023/1791 on energy efficiency, Article 11
eur-lex.europa.eu
Referenced sections
  • Supports the possibility of national platforms or collection routes for threshold information made available to responsible national authorities.
"national authorities responsible for implementation"
European Commission Energy Efficiency Directive page
energy.ec.europa.eu
Referenced sections
  • Commission page linking Article 11 to energy management systems and energy audits and to the Article 11 interpretation guidance.
"Article 11: energy management systems and energy audits"
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