photovoltaic systems
Up to 70% higher annual yields
In alpine areas the sun shines more often and the sunlight is more intense than in the lowlands. Reflection of the sunlight, e.g. on adjacent reservoirs or in the snow, makes it possible to benefit from the so-called albedo effect. The solar panels also work more efficiently at low temperatures. On average, up to 70% more energy can be produced on a yearly basis in a high alpine location than in the Swiss Plateau.
Winter electricity share of 45%
High-alpine PV systems therefore provide valuable winter electricity. This enables the threat of a winter power gap to be reduced and security of supply to be increased.Â
The Swiss 'Federal Act on Emergency Measures for the Short-Term Provision of Secure Electricity Supply in Winter' (amendment to the Energy Act)Â has paved the way for the rapid expansion of PV systems in open areas with high winter production levels.
