Refrigerated transport is a cold chain key element. It is also responsible of high energy consumption. For this purpose, a feasible solution is to switch to autonomous containers which can be recharged more efficiently once having finished transport distribution. This work focuses on refrigeration transport for frozen products ranging between -20°C to -30°C. First, a comparison study on different available technologies is carried out. Technologies are ranged from their driving energy source, their performance and their ability to run autonomously. This comparison highlights systems coupled to batteries in order to be autonomous and systems intrinsically autonomous such as phase change materials (PCM), solid/gas adsorption or thermochemical sorption systems. The latter allows energy storage without losses, with large chargedischarge cycles and on demand production. Besides, ammonia-based thermochemical sorption systems appear as a suitable solution to fulfil requirements of deep freezing storage for mobile applications. A study of ammoniate salts selection is carried out to estimate feasible energy densities, mass and volumes of thermochemical reactors. Discarding cascade systems, best candidates for a single cycle appear to be MnCl 2 and FeCl 2 .