This paper presents a discussion on Grids merging with the economy. Until now no clear notion and categorization exist in this area. Problem formulations of “economy grid” projects have difficulties in lingual descriptions, and are going with a hype based on vague assumptions and therefore weak problem and requirement specifications. In this paper we present the economy-grid (EG) layer model to clarify many interacting aspects. The model results from historical observations and is proven by applying it to the recent Grid projects and initiatives.