This paper presents an information model conceived to support the computation of the power continuity indices. The model consists of three layers: the physical layer, the data layer and the application layer. A tree-like structure that spans the graph structure of the power grid and the hierarchical structure of the power distribution subsidiary is used to describe the relationships between this subsidiary and its consumers. The model allows the computation of the quality indices at various granularity levels by defining a number of monitored areas that span sub-trees of the spanning tree of different sizes. For the description of the connectivity state of the consumer to the power grid during the monitored period of time a status function is also defined.

Keywords: Information model, Power continuity indices, Spanning tree, Connectivity status function, Data production and aggregation areas