Since the first International Conference on Solar Air Conditioning which took place in 2005 in Bad Staffelstein in Germany, solar cooling technology has faced a lot of changes and evolutions. At this early time, the technology was still in its infancy, mainly driven by R&D institutes and promising a huge potential as an alternative to conventional technology. As a return to the origin after 8 years, the 5th OTTI conference is coming back to Germany and another town in South West area of Baden Württemberg : Bad Krozingen. Close to Freiburg in Breisgau, location of one of the most important R&DF institutes in the World specialized on Solar energy and especially Solar cooling, this town will be an ideal place for speaking about Solar Air Conditioning. Moreover, it will take place just after the 2nd SHC conference which will occur in Freiburg a few days before.