Here you will find data on almost all electricity generation facilities in Switzerland. The database includes all power generation facilities registered in the Swiss system of guarantees of origin, which is managed by Pronovo AG.
The geographical overview shows all plants with an output of more than 30 kilovoltamperes (kVA) as well as small plants (with an output of more than 2 kW) by type.
More info available here: https://www.uvek-gis.admin.ch/BFE/storymaps/EE_Elektrizitaetsproduktionsanlagen/?lang=fr