Energie und Wasser Potsdam GmbH is planning to build an energy centre to supply a local heating network with heat from deep geothermal energy. The energy centre is to contain two identical heat pump cascades for harnessing deep geothermal energy, ancillary units for heat generation and feed-out, as well as electrical, instrumentation and control systems. In addition, there is a district heating connection to secure heat generation.

The subject matter of the contract is the delivery and installation of a heat pump cascade or the iKWK1 sub-system (Title 01), consisting of heat pumps including ancillary units (control system, field devices, feeder pumps, 3-way valves, etc.) and soundproofing housing (optional, if required). The bidder configures the heat pump cascade himself according to the specified operating and installation parameters in the specification. The bidder can reduce the number of heat pumps if the specified parameters are met. The service also includes construction site equipment, work and assembly planning, commissioning and acceptance, technical documentation, maintenance contracts and general repairs. The two heat pump cascades consist of a low-temperature (NT) and a high-temperature (HT) stage. The NT stage supplies the local heating network continuously, while the HT stage feeds thermal surpluses into the primary district heating network in a power-controlled manner. The number of heat pumps is to be determined by the bidder, but is max. 5 (3 x NT, 2 x HT). The heat pump cascades each form the regenerative part of an innovative CHP plant (iKWK1 and iKWK2 subsystems). The sub-installations are to be built one after the other.