BTsun SA is a general renewable energy contractor operating across Vaud, Fribourg, and Valais regions. The company provides comprehensive turnkey solutions covering photovoltaic installations, heat pump systems, thermal solutions, energy storage, EV charging stations, thermodynamic tanks, and complete energy renovation services. With certified GSP installer and planner credentials, BTsun handles all technical and financial analysis, administrative procedures, and project management from initial consultation through completion. The company specializes in consumer pooling arrangements (RCP, virtual RCP, CEL, SmartGrid) and self-consumer communities (CA) for automated energy sharing and sales between neighbors. BTsun also manages roof renovation and insulation projects under cantonal building programs, including CECB+ diagnostics and asbestos testing coordination.
