Stadtwerke München and Siemens team up to create virtual power plant

Stadtwerke München (SWM) has combined with Siemens Infrastructure & Cities to jointly create a virtual power plant in which a number of small scale, distributed energy sources are pooled and operated like a single installation.

The main aim for SWM is to improve the reliability of planning and forecasting for decentralized power generation sources in the area which it supplies, by means of this virtual power plant devised jointly with Siemens.

In the first stage, unit-type cogenerating stations with a total rating of 8 MW were integrated, along with renewable energy generating plants amounting to 12 MW. The core component of this virtual interconnection is the Distributed Energy Management System DEMS from Siemens. It ensures that Stadtwerke München can not only optimally deploy and operate its decentralized energy sources and loads, but also add more value from greater marketing scope.

SWM's virtual power plant, in which six unit-type cogeneration modules, five hydropower plants and a wind farm in the Munich area have been combined to form a virtual interconnection, can be operated more efficiently than the decentralized plants separately.

"We are in a position to create a virtual power plant as a key element of a Smart Grid in such a way as to provide maximum possible benefit for the operators of the integrated distributed energy sources and for the power supplier too. For municipal utilities, virtual power plants offer new potential", commented Jan Mrosik, CEO of the Smart Grid Division of the Siemens Infrastructure & Cities Sector.

"The virtual power plant meets the demands encountered in both operation and marketing. It enables SWM to add more value, because it opens up further marketing alternatives, for example on the Leipzig Energy Exchange EEX or the market for regulated energy. Our initial positive experience is encouraging us to expand the virtual power plant by including further energy sources and switched loads. In the long term this will create prospects for counteracting the supply problems that arise when more of the infeed comes from renewable energy sources. That is precisely what a Smart Grid is all about", said Stephan Schwarz, SWM Director for Utilities and Technology.

On the basis of sophisticated information and communication technology, the distributed energy management system DEMS from Siemens networks and pools the individual distributed energy sources, so as to be able to control them centrally as one virtual power plant

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