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The paper describes the performance of the grid-connected 1-kW PV system installed on a grammar school in Poland after eight years of operation. It was designed and installed in year 2000 and from year 2001 it is fully monitored according to guidelines of standard IEC 61724. System was build from 20 a-Si modules (Millennia MST 50 MV by BP Solar) and Sunny Boy inverter. Monitoring system consists of...
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