IEA PVPS Task 2 Performance Database Example
Plant name : Wildkogelbahn
Start of plant operation : 1994
Type of plant : Grid-connected
Type of use : Professional system
Mounting : Sloped roof
Nominal peak power : 4.69 kW
Location : Alpine top station at 2 100 meters altitude
Country : Austria

Year       1995                
Availability of monitored data 0.84 AMD [ ]
Meteorology        
Annual irradiation, 
in array plane		 1 208 Hi [kWh/mē]
System Energies        
Annual a.c. energy output 3 313 EIO [kWh]
Solar coverage factor

0.06

 Fs [ ]
System performance Indices        
Daily reference yield

3.95

 Yr [h/d]
Daily final yield

2.31

 Yf  [h/d]
Daily array capture losses

1.18

 Lc  [h/d]
Daily system losses

0.46

 Ls [h/d]
Annual performance Ratio

0.58

 PR [ ]
Annual array efficiency

8.3

 hA [%]
Annual inverter efficiency

83.3

 hinv [%]
Annual overall plant efficiency

6.9

 htot [%]

In the beginning of the 1990's the aerial ropeway "Wildkogelbahnen" was opened to the public. The aerial ropeway transports tourists to the top, where an observation deck offers a very nice view above the Alpine national park. The altitude of the top station is 2 100 meters above sea level. 

For supplying the aerial ropeway, a 4.7 kW grid-connected PV system was installed in the early nineties. The PV modules are mounted on the roof of the "Wildkogelbahnen" top station. The PV plant consists of 75 Kyocera modules covering a PV array area of 40 mē. The electricity consumption differs from season to season. During the main tourist season in winter, the complete solar electricity is used by the aerial ropeway. In time periods with little tourism, most of PV energy is supplied into the public grid. 

The solar irradiance reaches maximum values of 1 200 W/mē in the month of May. The tilt angle is 26° to the horizontal and the azimuth angle is 190°. The annual performance ratio was calculated to be 0.58. The operator is very satisfied with the PV system and its reliability. During winter time periods, a lot of snow may cover the PV modules. Huge layers of snow up to two meters are the only reducing performance and efficiency coefficients of the PV system.

 
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modified on 02/14/05