The energy crisis is one of the main focuses of attention across the world. Atrium spaces have become a main part of most public buildings all over the world, regardless of their environmental aspects. The arguments of a good space, the psychological atmosphere and the impact on energy consumption are the main problems that face any designer, environmental designers in particular. In atrium design, there is more than one aspect to be considered; architectural, functional, economic, environmental, construction and psychological aspects are the main aspects that should be considered in the early design stage. The environmental aspect is the most important of all; this is affected by several factors, such as the daylighting and thermal performance. Much research has studied this aspect in relation to a certain location, case, factor or multiple factors; these results might thus be limited. The complication and contradiction of these factors leads to the necessity of studying and analysing them. The question that this research aims to answer is how a building can benefit from daylighting with or without excess heat gain according to the climatic conditions, through determining the main factors that should be studied and their impacts on the design of atrium space
