More than 1000 grid connected PVSs are working in Saxony today. Of those, fewer than 3% have an output of more than 10kW. The annual yields of PVS that were recently constructed is at 800 kWh/kW — about 100 kWh/kW above the yield of the PvS constructed in the early 90s.

The systematic monitoring of the PVSs has proven itself successful in the 1000-roof program [7], but has since then not been financed. The re-start of a systematic monitoring — program seems to be very useful for analysing the properties and the behaviour of the new introduced components and to contribute to higher yields. Through the regulation of payment of the renewable energy law, the yields of PV power plants is now of high interest to plant owners. The today available technology of transferring PVS output data remotely should be used for obtaining further increases in yield.

The first PV power plants of MW-class will become operative in Saxony still in 2004. The 1-MW station in Meerane is about to start operations, and south of Leipzig (near Espenhain) a 5-MW plant is being constructed. The total PV-output in Saxony with therefore more than double in 2004 (reaching a total of approximately 10 MW).