Solatube® Daylighting Systems ... in retail
A 1999 Pacific Gas & Electric Company daylighting study analyzed a retail chain of 108 stores
where two-thirds of the stores were lit with skylights and one-third were not. All other things being
equal, the study found that the stores with natural lighting had 40% higher sales than those without.
(Heschong Mahone Group HMG “Skylighting and Retail Sales”. Report at www.h-m-g.com)
In 2003, a retail study "Productivity and Building Science" was conducted by Integrated Energy Systems to replicate the HMG study with a new (anonymous) retailer.
The report backed up the HMG study, confirming amongst other findings that:Stores with the most favorable daylighting conditions had a 40% increase in sales compared to
non-daylit stores, consistent with the findings of the HMG study.
Cost savings can be significant too; at a new 'green' McDonalds store in the USA, 24 percent less energy is used than a standard McDonalds thanks to the installation of 19 Solatube® Daylighting Systems which provide natural lighting to 92 percent of the restaurant.
