From 1st February 2006 until 31 July 2008, the daily average electrical energy delivered to the grid by the PV systems was 53.7 kWh, corresponding to 23.6 kWh produced in the park and to 30.0 kWh produced in the fagade, Table 8.

The average daily consumption of the Solar XXI building was of 74.6 kWh and the contribution of both PV systems to satisfy this consumption was about 72 %.

Ago 08

Table 8. Daily averages values of the energy produced by PV systems and consumed in the building.

2. Conclusion

The monitoring data of the two PV systems installed at Solar XXI building, shows very good performances. The daily average electrical energy delivered to the grid by the PV systems was 53.7 kWh, corresponding to 23.6 kWh produced by the amorphous silicon modules installed in the park and to 30.0 kWh produced by the multicrystalline modules in the fagade.

The measured average daily consumption of the Solar XXI building was of 74.6 kWh and the contribution of both PV systems to satisfy this consumption was about 72 %.

References

[ 1] A. Joyce, C. Rodrigues, R. Manso, 2001, “Modelling a PV System”, Renewable Energy 22, 275-280, Pergamon, Australia

[ 2] H. Gongalves, A. Silva, A. Ramalho, C. Rodrigues, 2008, “Thermal performance of a passive solar office building in Portugal”, EuroSun2008, Lisbon

[ 3] C. Rodrigues, 1997, “Dimensionamento de Sistemas Fotovoltaicos Autonomos”, master thesis Mechanical Eng., Institute Superior Tecnico, Lisbon