General Publications


Position Paper: Solar Renovation of Non-Residential Buildings
September 2015 - PDF 1.49MB
By: IEA SHC Task 47: Position Paper
The IEA’s Energy Technology Perspectives 2008 report shows that buildings are responsible for about 45% of the total energy consumption in OECD countries and 38% globally. More than half of the existing building stock will be standing in 2050 and more than 50% of the buildings in many OECD countries were built before 1970. The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020. This also includes the existing non-residential buildings, and a dramatic reduction in primary energy consumption will be needed.
Position Paper: Solar Renovation of Non-Residential Buildings
Assessment of Technical Solution and Operational Management
June 2015 - PDF 10.66MB
By: Many authors
Editor: Doreen Kalz
The integration of components and subsystems into heating and cooling concepts and their interaction and optimization is a challenging work. However, it offers immense opportunities for energy savings. The recommendations presented in this report are derived from demonstration projects and the lessons learnt during the execution of the projects in the planning and construction phase, but also during operation.
Assessment of Technical Solution and Operational Management
Task 47 Highlights 2014
May 2015 - PDF 1.2MB
By: Task 47
The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020. For the existing non-residential buildings, a dramatic reduction in primary energy consumption is crucial to achieve this goal. A few renovation projects have demonstrated that total primary energy consumption can be drastically reduced together with improvements of the indoor climate. However, most property owners are not even aware that such savings are possible, and they set too conservative energy targets. Buildings renovated to mediocre performance can be a lost opportunity for decades. It is therefore important that building owners are aware of such successes and set ambitious targets.
Task 47 Highlights 2014
Lessons learned from 20 Non-Residential Building Renovations
February 2015 - PDF 1.76MB
By: Fritjof Salvesen and Mari Lyseid Authen
The report summarizes the findings from 20 exemplary renovation projects. The buildings are divided into three categories; educational buildings, office buildings and historic & protected buildings. In this summary chapter, the key findings from all the buildings are described. More detailed information for each building category is presented under the respective chapters.
Document Number: IEA SHC Report T.47.A.1
Lessons learned from 20 Non-Residential Building Renovations
Sustainable Refurbishments, School Buildings
A Guide for Designers and Planners
January 2015 - PDF 17.22MB
By: Sophie Trachte and André De Herde
The lack of comfort in most school buildings has negative and scientifically proven consequences on pupils’ concentration and learning. This is why school buildings have an urgent need of fundamental refurbishment. This guide provides designers with information and resources needed to retrofit school buildings in a sustainable and efficient way. The book is richly illustrated with explanatory diagrams and pictures.
Sustainable Refurbishments, School Buildings
Market Change: Upgrading of the non-residential building stock towards nZEB standard
Recommendations to authorities and construction industry
December 2014 - PDF 2.06MB
By: Trond Haavik and Paul Jacob Helgesen
This report includes desktop studies of available building stock information and ownership structures in partner countries and summaries made by task experts from participating countries. Interviews and in-depth descriptions of decision-making processes used in case studies from the participating countries are carried out in order to identify barriers and driving forces. Two workshops within the Task have been organized to discuss preliminary findings. Based on the above listed information, a cross analysis was chaired by the subtask leader with contribution from the task experts, to identify trends, commonalities and differences across the participating countries and draw conclusions about the decision making process.
Market Change: Upgrading of the non-residential building stock towards nZEB standard
Annex to the report
December 2014 - PDF 4.68MB - Posted: 2/20/2015
By: Trond Haavik and Paul Jacob Helgesen
Task 47 Highlight 2013
Renovation of Non-­-Residential Buildings towards Sustainable Standards
February 2014 - PDF 0.35MB
The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020.

For the existing non-residential buildings, a dramatic reduction in primary energy consumption is crucial to achieve this goal. A few renovation projects have demonstrated that total primary energy consumption can be drastically reduced together with improvements of the indoor climate. However, most property owners are not even aware that such savings are possible, and they set energy targets that are too conservative. Buildings renovated to mediocre performance can be a lost opportunity for decades. It is therefore important that building owners are aware of such successes and set ambitious targets.
Task 47 Highlight 2013
Task 47 Highlights 2012
February 2013 - PDF 0.33MB
The EU Parliament approved in April 2009 a recommendation that member states have to set intermediate goals for existing buildings as a fixed minimum percentage of buildings to be net zero energy by 2015 and 2020.