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The increased use of solar electrical (hotovolta-ic) systems due to the increasing fuel costs and a fast decreasing solar cell costs, calls for a better system design from technical-economical points of view. One of the main advantages of such systems is their high reliability. In order to achieve a high degree of reliable power supply to the load, it is of prime importance to choose the appropriate module and cell connections within the solar cell array and the most suitable storage capacity
Alfredo Braunstein (Sun,) studied this question.