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The members of LIEN, supported by SEAI, work together to improve their energy performance and inspire others to follow.

  • 205

    of Ireland’s largest energy users are members of LIEN
  • 144,000

    people are employed by LIEN members
  • 18%

    of Ireland’s Total Primary Energy Requirement is accounted for by LIEN members

About LIEN

LIEN members are companies with an annual energy spend of €1 million or more. SEAI work with these companies to improve their energy performance, reduce absolute emissions. We hope Ireland's larger companies will lead on the transition, and inspire others to take action, by sharing their experience. Special working groups within the network have developed best practice guides on how to manage energy performance. LIEN members report annually on energy consumption and projects undertaken to help increase efficiency.

View the LIEN members list

Who can join LIEN

Companies are eligible if they are either spending at least €1 million on energy annually, or are certified to or pursuing ISO 50001 certification. Certain commitments must be fulfilled by companies signing up to LIEN. You must:

  • Develop an energy management programme and action plan
  • Set and review energy targets
  • Report annually on energy performance
Learn more about Who can join LIEN

View LIEN member results and targets

The total primary energy requirement (TPER) of the network reported in 2022 was 30,327 GWh. View TPER breakdowns by sector and individual member results and targets.

View Members Results


These guides, developed by special working groups in the large industry energy network, document best practice and introduce techniques for reducing energy use.

Contact us

If you are interested in joining or have any queries about LIEN, please email