The first deadline under Article 11 of the recast EED, Directive (EU) 2023/1791, fell on 11 October 2026. It required an energy audit from enterprises above 10 terajoules (TJ) a year that do not run an energy management system.
The second deadline is the one that changes how sites operate. Enterprises averaging more than 85 TJ a year must implement a certified energy management system by 11 October 2027. For most Irish sites in scope, that means ISO 50001. The ISO 50001 Ireland clock is now running: the largest energy users have 12 months, and certification is the finish line, not the start.
The 85 TJ line catches most large process sites
Irish sites meter in kilowatt-hours, so convert the threshold. One kWh equals 3.6 megajoules. 85 TJ is 85,000,000 MJ divided by 3.6, or 23,611,111 kWh: about 23.6 gigawatt-hours (GWh) a year.
The test is the average over the previous three years, with all energy carriers combined. Electricity, natural gas, oil and other fuels all count. A dairy processor, pharmaceutical plant or medical device site running steam boilers alongside a large electrical load can clear 23.6 GWh without being unusually large.
The ISO 50001 Ireland deadline is the last of four key dates
- 20 September 2023: Directive (EU) 2023/1791 is published in the Official Journal.
- 11 October 2025: deadline for Member States to transpose Article 11.
- 11 October 2026: first energy audit due for enterprises above 10 TJ (about 2.8 GWh) without an energy management system.
- 11 October 2027: certified energy management system required for enterprises above 85 TJ (about 23.6 GWh).
We could not confirm published Irish transposing regulations at the time of writing. The thresholds and dates above come from the directive and the European Commission’s interpretation guidance, Recommendation (EU) 2024/2002.
Certification means an independent body, not an internal policy
The Commission’s guidance says the system must be certified by an independent body in line with the relevant European and international standards. It names ISO 50001 as the most relevant.
A written energy policy does not meet that test. Neither does a one-off audit. The system needs an energy objective, a plan to reach it, monitoring of actual consumption and a measured record of progress, reviewed in a plan-do-check-act cycle.
Twelve months is enough only if the data work starts now
Certification bodies typically audit a system that has already been running, with records to show for it. Sites that start in spring 2027 may have a policy and no evidence.
The practical order is clear. Confirm your three-year average consumption first. Then build the energy review: which boilers, compressors, chillers and process lines drive the bill. Set baselines and energy performance indicators for each. Run the system through at least one internal audit and management review before the certification audit.
Sites that already hold ISO 14001 have a head start. The guidance allows an exemption for an independently certified environmental management system, but only where it includes an energy audit that meets the directive’s minimum criteria.
Treat the deadline as a cost project, not a compliance file
The energy review that ISO 50001 demands is the same work that finds heat recovery, steam and compressed air savings. Done well, the system pays for its own certification.
Climeaction implements ISO 50001 for food and dairy and life sciences sites, from the first energy review to certification readiness. Talk to our team about a 12-month plan.
Sites averaging more than 23.6 GWh a year need an independently certified energy management system by 11 October 2027. Certification rewards a system with a track record, so the 12 months available are best spent building data, baselines and audit evidence.
