This plant is the oldest PV plant (3.18 kWp) in Burgdorf at 540m with analytical monitoring nearly from the beginning of operation. Continuous monitoring data are available since July, 1992. During the first years, energy production was affected by occasional inverter defects until autumn 1996.

At PV plants in the lower parts of Switzerland, where it is often foggy or overcast in autumn and winter, energy production varies very much between a high maximum value in summer and a deep minimum in winter. Winter energy fraction at such locations is below 30%.

 

• normalized analysis
  

Location:	Burgdorf; 540 m
Start up:	24.06.1992
Module:	Siemens M55 (60 pieces)
PV generator power:	3 180 Wp (nominal)
Gross area:	25.6 m2
Orientation:	10° east, 28° tilted
Inverter:	ASP TopClass Grid III 4000/6 (since 14.04.97) ASP TopClass 3000 (from 24.06.92 until 14.04.97)
Measured parameters:	In-plane solar radiation with a pyranometer Module temperature and ambient temperature DC current and DC voltage AC power