The project also aims to allow stakeholders to predict the current and future energy efficiency of buildings at both the individual and neighbourhood levels. The ultimate purpose of the project is to enable all parties to make better informed decissions in optimising the energy performance at the building life-cycle level, including operation and maintenance.

There is evidence of library needs by applying requirements of the project partners. Stakeholders in engineering and construction industry are often under pressure since market needs for innovation are relatively high compared with customer willingness to pay extra money and to take technical risks while using new products. On this website novel building components are divided into several categories (e.g. windows, doors, roofs and walls). For each category specific technologies are collected which are serving energy efficiency of the building. Each technology contains a data sheet covering “Overview”, “Structural factors”, “Economic factors”, “Products” and “Deterioration”.