A consortium led by Siemens, comprising Austrian Energy & Environment (AE&E) and the Japan-based company IHI, will build a coal-fired combined heat and power (CHP) plant in Mainz, Germany. The supervisory board of the purchaser, Mainz-Wiesbaden AG (KMW), confirmed the contract on 28 February 2008. The value of the order for the consortium totals EUR 1 billion, with Siemens share amounting to around half. The hard-coal-fired CHP plant with a gross rated capacity of over 800MW will be built at the existing KMW power plant site in Mainz. Besides electricity the cogeneration plant will also produce 200MW of district heat for as many as 40,000 households and 30MW process steam for industrial plants in Mainz. The power plant licensing phase is already underway and construction is scheduled to commence late 2008 / early 2009. The completion date is set for 2013. The Siemens scope of supply encompasses key components such as the steam turbine and generator, and the electrical and I&C systems, including the associated planning, installation and commissioning. The consortium partners, the working group comprising AE&E and IHI, will supply the tower boiler, the flue-gas desulfurization plant, and other supply and disposal systems. Within the working group AE&E is also responsible for overall erection. Further key supplies such as the plant’s coal handling and ash removal systems, and principal civil structures will be provided by the customer and integrated into the plant.
