“…In the building, daylighting can be supplied by a proper opening such as windows which gives attractive indoor environment (Sherif et al, 2012;Zheng et al, 2013;Ghisi and Tinker, 2005). Field measurements on buildings show that the consumption of energy in US buildings is 20-40% and for Indian buildings more than 20% of the total electrical consumption and the use of grid based electricity is directly related to pollution and global warming due to fossil fuels as the input (Li, 2010;Balcomb, 1994;Sudan and Tiwari, 2014 of the proper daylighting technologies in the buildings results in less energy use and good visual performance (Wright and Letherman, 1998;CIBSE, 1999;Calcagni and Paroncini, 2004;Nabil and Mardaljevic, 2006). The losses in the US condition are less compared to the losses for Indian condition due to the advanced technologies used in US.…”