The increasing economic impact of Public Sector Information (PSI) reuse contrasts with a low level of understanding of how the economic value is created. A full theoretical model is drafted based on models developed for other disciplines. A subset of this model, the relation between reusability, scope and type of information and business value is tested with real data coming from the companies which reuse information (infomediaries) and data sources from the Spanish market. For testing with real data a new standardisation and an associated metric, MELODA, is defined by the author. Analysis about the relation between reusability dimensions, scope and type of information is tested against the information consumption by companies which provide economic value based on PSI reuse. Preliminary results show relation between access to information and information consumption.