Fig. 1. Demand profile of a 5-person-household with complete electrical equipment. curve reduced by the photovoltaic capacity have been calculated. The percentage alterations refer to the monthly peak load values, respectively, the monthly energy quantities of the original curve. The calculation supports the statement that even with optimistic assumptions no conventional power plant capacity can be saved. The load peaks in the months September through January cannot be reduced. In the months May and July a certain capacity saving is noticeable, however, one should take into account that this is a comparison of one individual year and only one day with bad weather in the month of July would reduce the capacity saving again to the average value for the summer months of 1% to 2%! The same calculation carried out for the less favourable year 1974 confirms this statement. Effects on the Distribution Network What are the effects on the transmission and distribution side? As with the power plant capacity the systems must be designed for the peak load, i.e., as there is no load reduction through the decentral use of terrestrial solar cell application to be expected, the transmission and distribution system is also not relieved. On the contrary: As the generation of the photovoltaic roofs shows a high simultaneity there
RkJQdWJsaXNoZXIy MTU5NjU0Mg==