Since the beginning of 2012, half of the energy used at the airport in Schönefeld and Tegel has come from renewable sources. This is roughly equivalent to the electricity consumption of a town with 35,000 inhabitants. Compared with conventional electricity from mixed sources that is used throughout Germany, this means that we save around 36,500 tons of carbon dioxide and around 50 kilograms of nuclear waste. The electricity supplied by enercity in Hanover is certified according to the highest-ranking gold standard of Grüner Strom-Label e.V association. This certification organisation, which is backed by environmental and consumer rights organisations, uses strict standards to evaluate electricity sources and promote the use of renewable energy.
The BER terminal is fitted with an intelligent building air conditioning system which will be up to 30 per cent more efficient than the standards specified in the Energy Saving Act of 2007. One year after opening all buildings that are intended for long-term use and the technical installations in these facilities will be checked to identify further energy saving potential.
The other half of the airport’s power supply is generated by highly efficient combined heat and power plants. In addition to providing electricity, the gas-driven modules also generate heat which is stored or reheated in the boilers and fed into the district heating network. If the outside temperatures are higher then the heat from the exhaust gases are used to heat the terminal. While a gas-fired power plant has a maximum conversion efficiency of 40 per cent, the combined heat and power station is expected to achieve over 80 per cent after the terminal opens. In the medium term, the combined heat and power plants operated by E.ON edis will be fully fired with regionally produced renewable raw materials.