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Colaiste Choilm


Location Client Cost Completion Awards
Tullamore, Ireland Department of Education and Skills €5.4m 2011 3

Project details

A low energy research project to test and study methods of improving the environmental performance of school buildings.

 It is the first secondary school to achieve an A2 energy rating and has achieved the lowest air leakage rate of any secondary school in Ireland. The buildings form, layout, structure, and façade were designed to minimise the buildings energy use passively, and the building contains several new technologies that have never been applied to secondary schools in Ireland before.

The building has been designed to achieve an 87% rainwater recovery with water consumption 65% lower than a typical school and has a carbon impact reduction of approximately 40% relative to current standards. The school also includes more extensive building monitoring features than any previous school.

The lowest energy secondary school in Ireland


  • create an exemplary secondary school, also to be used as an environmental research project


  • overall winner and best green building at the Irish Green Award
  • the judges said the entry offered “leadership, excellence and commitment to the sustainable design, build and operation of all new Irish schools”
  • Sustainable Energy Award 2012

Integrated services

environmental engineering, sustainability