Innovative storage solutions at EUREF-Campus
Managing the challenges of the energy revolution will require the development of technological solutions which incorporate a growing proportion of renewable energies. This is precisely the aim of WindNODE, a joint project involving all five eastern German states and the capital Berlin, together with more than 70 partners. Ready-to-use, market-viable technologies are tested here using individual projects. In addition to energy suppliers, distribution network operators and high-tech specialists, amongst others, several of the region’s universities and research institutes are actively involved in individual projects within the scope of WindNODE.
EUREF-Campus has also been part of this with energy projects of its own, implementing the projects “power-to-heat/power-to-cold” (water storage) and “power-to-power” (batteries). The technology for this was developed by GASAG Solution Plus. Stromnetz Berlin, BLS Energieplan and EUREF-Consulting are additional project partners. The power-to-heat/power-to-cold system consists of two storage elements each with 22 m³ of capacity as well as an electric heater with 500 kW of output. The system uses surplus electricity to heat water, which can then be fed into the EUREF-Campus heating network as required. A connection to two compressor chillers makes it possible to use the cold water supply according to the same principle. This ensures that surplus electricity can be stored during summer operation as well. A connection is provided to a biomethane combined heat and power plant, which kicks in if the mains voltage is too low. An ORC system converts any waste heat back into electricity, and compressor chillers make it available for cooling. This enables the efficient use of renewable energy which takes local conditions into account and, above all, focuses on the needs of the consumer.