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Frank Feils Hightech-Eigenheim: Hausgemachter Strom
Frank Feils Einfamilienhaus produziert mehr Energie, als es verbraucht. Rund 50 000 Euro hat der Bauherr für eine Fotovoltaikanlage samt Stromspeicher ausgegeben. Lohnt sich diese Investition nicht nur ökologisch, sondern auch wirtschaftlich?

Frank Feil vor seinem Eigenheim in Mühlacker. Den Elektro-BMW nutzen der 34-Jährige und seine Frau in einem Umkreis von 50 Kilometer – sowie als zusätzlichen Stromspeicher.
Gottfried Stoppel