T50 D.2 Daylighting and lighting retrofit to reduce energy use in non-residential buildings: A literature review
This report presents a literature review about energy-efficient retrofit of electric lighting and daylighting systems in buildings. The review, which covers around 160 research articles, discusses the following energy retrofit strategies: replacement of lamp, ballast or luminaire; use of task-ambient lighting design; improvement in maintenance; reduction of maintained illuminance levels; improveme
