GASAG Solution Plus GmbH operates the EUREF-Energiewerkstatt,, which is the energy heart of the site. It generates 100 percent of the heat required on site.
The central element of the Energy Workshop is a combined heat and power plant. A generator is powered by the combustion of biomethane to produce electricity. The electricity is fed directly into the Berlin power grid. The waste heat is used to heat water. On the EUREF campus, this heat is used to heat the offices. The underground district heating pipes, through which the 90-degree hot water is pumped to the buildings, are 2.5 kilometers long.
Together with two smaller combined heat and power plants that produce electricity for the operation of the energy center and the zeemobase, this covers a large part of the heating requirements on the EUREF campus. If additional heating energy is required on very cold days, two low-temperature gas boilers are available to cover peak loads. At the same time, the energy center produces cooling for the numerous server rooms and offices.
The energy center is controlled by artificial intelligence, the so-called Eco-Tool. For this purpose, around 1,000 data points from the energy workshop and the buildings provide information on what energy is consumed in which building and when. Weather forecasts and energy market data are also included in the calculations.
With the help of power-to-heat/power-to-cold technology, renewable energy can also be stored in the energy center. If too much electricity is produced on sunny or windy days in solar parks or by wind turbines, this is registered in the energy center. Surplus electricity is then used to heat or cool water and stored in two heavily insulated water tanks for later use. This storage system was part of the WindNODE research project, which was funded by the German Federal Ministry for Economic Affairs and Energy.
Audi also operates a 1.9 MWh second-use battery on the campus. Twenty discarded batteries from e-tron test vehicles are connected here to form a large stationary battery and serve as a test environment and for grid stabilization on the campus.
You can visit the EUREF Energy Workshop by GASAG Solution Plus on a guided tour led by experts and experience live how the energy supply of the future already works today. Further information: energiewende-erleben.de