Energy & EnvironmentThomas M. Green energy – how does Stoelzle cope with that challenge, Thomas?"For me, everything has to do with energy. Since the glass industry uses much energy for melting glass from solid raw materials, we are constantly seeking technologies and tools, which help us either reduce our energy consumption or recover energy. In our Austrian production plant we successfully installed a heat exchanger and can as a result feed around 18,000 MWh per year into the local district heating network from the waste gas of our furnaces. This corresponds to a saving of 4,300 tons of CO2 compared to the heating of households with natural gas. In addition, around 6,000 photovoltaic panels on our warehouse roofs, can produce 1,800 MWh of green energy at peak times."