The rise in the standard of living, worldwide growing population and development plans will result in an increase in energy and growing water consumption. For this, we have to install more Nuclear Cogeneration Plant (NCP) or utilized the already installed NCP flexibly and more efficiently within the area of cogeneration applications having power and heat demands of varying nature such as in District heating systems, for seawater or cleaner desalination. The purpose of this study is to discuss how to manage varying energy demands and the need to reduce greenhouse gas emissions. A thermal heat storage system is included in the NCP for this reason, assisting in the delivery of heat to the District heating system while also charging the NCP.