Lighting accounts for approx. 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 façade 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 Many countries face the same situation: About 75 % of the lighting installations are considered to be out of date (older than 25 years).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 non-domestic 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 façade/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
Welcome and coffee
Advanced lighting solutions for retrofitting buildings: Introducing IEA SHC Task 50
Jan de Boer, Fraunhofer IBP, Germany
Guidelines for lighting retrofits in Brazil
(Ministry of Energy)
Subtask A: Market and Policies - Highlights and results
Marc Fontoynont, Danish Building Research Institute (SBi), Denmark
Vidros e eficiência energética em edifícios no Brasil
Subtask B: Daylighting and Electric Lighting Solutions - Highlights and results
Martine Knoop, Technische Universität Berlin; Germany
Experience from renovation and new efficient projects in Brazil
Roberta Vieira, UFMG
Subtask C: Methods and Tools - Highlights and results
Jérôme Kaempf, kaemco LLC, Switzerland and Bernard Paule, Estia SA, Switzerland
Retrofitting artificial lighting systems in non residential buildings
Plinio Godoy, GODOY Luminotecnica
Subtask D: Case Studies - Highlights and results
Marie-Claude Dubois, Lund University, Sweden
Roman Jakobiak, Daylighting.de, Germany
Artificial lighting retrofit in Brazil
IEA Task 50 Lighting Retrofit Adviser
Simon, Wössner, Fraunhofer IBP, Germany