With buildings consuming roughly 40% of all global energy, energy savings and improved performance comparability of European buildings is crucial.

The European Standardisation Organisations are currently revising the European standards supporting the Energy Performance of Buildings Directive (EPBD). These over 40 standards provide a methodology which help calculate the integrated energy performance of buildings and to estimate the related environmental impact. Each standard relates to specific aspects of the buildings’ performance such as thermal performance, ventilation, lighting, and heating. The main standard is the overarching EPBD standard (EN 15603).

ECOS works to ensure that the standards are accurate and realistic so as allow the proper implementation of the EPBD and help reach the EU energy efficiency targets.

ECOS calls for the standards:

  • To provide realistic and pragmatic calculation methods for buildings, systems, components, and materials for every relevant aspect of a building (e.g. thermal performance, ventilation)
  • To take into consideration aspects which help foster energy savings as mentioned in the EPBD, including the use of natural ventilation and daylight
  • To promote a high level of harmonisation, with common indicators and design for Energy Performance Certificates, reflecting best practices and available technologies.


ECOS contributes to:

  • CEN/TC 371: Energy Performance Working Group
  • CEN/TC 89: Thermal performance of buildings and building components
  • CEN/TC 156: Ventilation for buildings
  • CEN/TC 169: Light and Lighting
  • CEN/TC 228: Heating and cooling systems in buildings
  • CEN/TC 247: Building Automation, Controls and Building Management

Standardisation requests from the European Commission and EFTA:

  • M/480: Energy Performance of Buildings

Chris 1 - smallFor further information, please contact:

Christoforos Spiliotopoulos -Programme Manager




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