a) Solar air-conditioners

Today, in Serbia and Montenegro there are about 300,000 air/conditioners installed, each of an average power of 3 kW. That means that total electric power of these devices is about 900 MW! Thus, this is relatively largest market, with certain perspective for further expansion.

Solarisation of air-conditioning devices has an advantage base on the fact that requirements for space air conditioning coincide with insolation intensity. Disadvantage lies in large space requirements for solar modules (20-30 m2), which make their installation difficult and the same time increase the price of such solar air-conditioners.

Therefore an estimate of the dynamics of implementation of such systems at Yugoslavian market starts from moderate 44 kW during the first observed year (about fifteen demonstration systems). With anticipated drop in prices of solar cells and increase of requirements for air-conditioning during summer, and with announced high increase of prices of electric power, installed power of solar air conditioning devices would be rapidly increased (110 kW in 2007., 225 kW in 2008., etc.) (Table 4a.).

According to the data from the above table, in two last observed years (2009 and 2010.) installed power of solar air-conditioners would be stabilized at an annual level of about 350 kW.

b) Solar refrigerating plants

For application of solar cells in Balkans region, the following is interesting: mini refrigerating plants for freezing of meat and easily perishable goods in agriculture, as well
as refrigerators-trailers of lower carrying capacity for transport of frozen products and soft drinks.

Due to large number of mini refrigerating plants in Serbia that have not been statistical included (which are irreplaceable for numerous public feasts in the open), in further estimate we shall assume their total power of about 60 MW!

As an average power of a mini-refrigeration plant we shall adopt 2 kW. Unlike solar air — conditioner requiring large space for solar modules, this problem can be simple solved with refrigerating plants by optimum installation of movable plates of solar cells on flat roofs of mini chambers for freezing.

Because of this advantage and the fact that mini refrigerating plants are means for making profit, in further analysis it is assumed that these will have larger share at the market than air-conditioners (Table 4b).