To sustain an uninterrupted energy supply for the city of Düsseldorf, a CCHP plant (Siemens H-class) was built at the existing Lausward power plant site. STEAG Energy Services (SES) performed the following services as Owner’s Engineer in a consortium with EnBW Kraftwerke AG: conceptual design, basic engineering, project management, permission documentation, tender documents, design review, supervision of quality assurance and expediting, construction site management and supervision of commissioning, site supervision.