The Large Industry Energy Network (LIEN) is a voluntary grouping, facilitated by the Sustainable Energy Authority (SEAI), of companies that work together to develop and maintain robust energy management.

140 of Ireland’s largest energy users are members of the LIEN. Over 80 of these companies are also members of the Energy Agreement programme and are implementing the Energy Management Standard EN 16001. LIEN membership accounts for over 60% of Ireland's industrial energy requirement.

The LIEN has continuously improved its energy performance since it was formed, member companies avoided energy costs of €60 million in 2008 alone. Some have improved their energy efficiency by over 30% over the last decade.

Regular workshops, seminars and site visits provide a forum through which members keep up to date on best practice and new technologies.

By learning from experts and sharing knowledge and experiences, members save valuable research time, invest wisely and maximise returns.