A network-based method for facilitating a selection of at least one power generating facility, using a network-based system including a server and at least one device connected to the server via a network is disclosed. The method includes identifying assumptions to evaluate a power generating facility, receiving power plant facility information, and computing performance metrics of the facility based on received information and the identified assumptions. Other embodiments of the invention utilize a System, a Computer Program, an Apparatus, or a Computer for determining a value for one or more power generating facilities based on pre-determined assumptions that are developed from historical experience.