Siemens recently put two virtual power plants into operation. Virtual power plants are networks of several small power stations that are run like a single system. One of the new virtual power plants enables the Munich municipal utility company to run six of its cogeneration modules, five hydroelectric facilities, and one wind-power plant more efficiently and economically than if they were operated separately. The facilities have a combined output of 20 megawatts. The second virtual power plant was set up for the utility company RWE and consists of a number of similar components to those in Munich. Although it will initially also have an output of 20 megawatts, the second virtual power plant will be expanded to 200 megawatts by 2015. The key component of each virtual power plant network is the distributed energy management system from Siemens.
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