Testimonials 
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Josef Mayr builder Königsdorf (D) "The 'ticking' of the gas meter always got on my nerves. ..." |
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Georg Bentele Schöre Brewery and Restaurant Tettnang (D) "I must be able to depend to 100% on my heater. ..." |
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The Späth Couple, hotel operators Hotel Victoria Freiburg i. B. (D) "Besides best service and comfort, we wanted to also be able to offer CO2-free energy supplies without ..." |
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Dr. Friedrich Bullinger Ministry of Economics Baden-Württemberg "If your old Golf had a fuel consumption of 20 litres, you’d immediately replace it with a more fuel-efficient car. ..." |
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