EXPLOITING HIGH SOLAR IRRADIATION IN ALPINE REGIONS USING BIFACIAL PV MODULES FIRST RESULTS OF BIFACIAL MODULE TECHNOLOGY IN ALPINE CONDITIONS FOR HIGH ENERGY YIELDS AND OUTLOOK FOR FURTHER BENEFITS FOR HIGH GRID PENETRATION

摘要

For a fast deployment of PV in Europe, well-suited regions have to be determined and developed forPV power plants. Alpine regions provide high solar irradiation within central Europe. Applying newest bifacialtechnology allows exploiting the high solar irradiation available in alpine regions and taking advantage of severaladditional benefits leading to a higher overall performance.First results of a bifacial test module operated and measured in pre-alpine regions in Switzerland show an additionalgain of around 15% from the backside of bifacial PV modules compared to conventional PV modules, a gain of up to27% during winter days with reflections of solar irradiation from snow on the ground, an increase of performance ofabout 10% due to temperature effects and an overall higher solar irradiation in alpine regions of up to 50% comparedto lower regions in Switzerland. All these effects are complementary and not excluding. A higher share of powerproduction during winter half year of up to 45% contributes to a reduced need of seasonal storage for highpenetrations of PV but is not yet rated.