Monitoring results

1.2 PV facade system results

The systems have been monitored since their installation at June 2005, for the facade, and December 2005, for the park.

Fig. 4 presents the values of the monthly averages of the daily energy produced in the facade, per installed peak power. In general, this system produces more energy in winter periods with a maximum average daily production of 47.3 kWh at November 2007. The production minimum occurred at June 2005 with a daily average production of 20.2 kWh.

image409

Month

Fig. 4. PV facade — Monthly average of the daily energy produced, per installed peak power.

At Table 3 we present the yearly irradiation and yearly energy produced by PV Facade system. The average yearly irradiation measured in the vertical facade, is about 1 155 kW/m2 and the energy production is about 977 kWh per kW of peak power installed.

Year

Power

Irradiation

Production

(kW)

(kWh/m2)

(kWh/kW)

2006

12.16

1 118

950

2007

12.16

1 193

1 004

Table 3. Yearly energy produced by PV Facade system, per installed peak power.