Task 50
Task 50
SHC Task 50

Advanced Lighting for Retrofitting Buildings

Advanced Lighting Solutions for Retrofitting Buildings

2nd Industry Workshop - September 23, 2013 - 9:00 - 12:30 - Copenhagen, Denmark

Lighting accounts for approximately 19 % (~3000 TWh) of the global electric energy consumption. Without essential changes in policies, markets and practical implementations it is expected to continuously grow despite significant and rapid technical improvements like solid-state lighting, new facade and light management techniques. 

With a small volume of new buildings, major lighting energy savings can only be realized by retrofitting the existing building stock. Many countries face the same situation: About 75 % of the lighting installations are considered to be out of date (older than 25 years). Compared to existing installations, the majority of new solutions allow a significant increase in efficiency – easily by a factor of three or more – going along with highly interesting payback times. However, lighting refurbishments are still lagging behind compared to what is economically and technically possible and feasible.

Task 50 targets building owners (investors), authorities, industry and consultants by providing strategic, technical and economic information and by supporting stakeholders overcome barriers in retrofitting lighting installations. The overall objective of this Task is thus to accelerate retrofitting of daylighting and electric lighting solutions in the nondomestic sector using cost-effective, best practice approaches, which can be used on a wide range of typical existing buildings.

The scope of Task 50 is on general lighting systems for indoor environments. The focus is on lighting appliances in non-domestic buildings. Technically, Task 50 addresses daylight utilization through better facade/roof technologies and architectural solutions, electric lighting schemes as well as lighting control systems and strategies.

Objectives of the Workshop

  • Task experts will inform about general lighting retrofit issues and possible solutions
  • General experience exchange between industry and research
  • Obtain feedback from industry and learn about practitioners’ needs, for successful continuation of the work within IEA SHC Task 50

Agenda (Presentations available when underlined)

9:00-9:15 - Welcome and coffee 

Advanced lighting solutions for retrofitting buildings: Introducing IEA SHC Task 50
Jan de Boer, Fraunhofer-IBP, Germany

Possibilities and risks of lighting-retrofits - Knowledge gained in practice
Wilfried Pohl, Bartenbach Lichtlabor, Austria

Lighting retrofit of a hypermarket - Energy is not the only driver
Bernard Paule, ESTIA, Switzerland

Lighting retrofit: Creativity supported by lighting
Henrik Clausen, Fagerhult, Denmark

10:45-11:00 Coffee break 

How to approach the comparison of highly differentiated retrofit technologies on an equal basis?
Martine Knoop, TU-Berlin, Germany

Barriers and benefits for lighting in the building process
Peter Pertola, WSP, Sweden

Relight - On-site inspection of lighting installations and identification of potentials
Berat Aktuna, Fraunhofer-IBP, Germany

Retrofitting buildings – what about daylight?
Jakob Strømann-Andersen & Anne Iversen, Henning Larsen Architects

Daylight and sustainability - Benefits and Limitations of Voluntary Certification Systems
Marie-Claude Dubois, Lund University, Sweden

12:30-13:30 Lunch


Aalborg University Copenhagen
Main Building (ACM 15)
A. C. Meyers Vænge 15,
Copenhagen, Denmark
Map & Directions


Workshop Documents


Kjeld Johnsen and Marc Fontoynont
Danish Building Research Institute
Aalborg University 
Department of Energy & Environment 
A C Meyers Vænge 15, 4. Sal
DK - 2450 København SV