Driven by the increasing demand, grid technology is entering the business market in form of utility computing, grid middleware and grid-enabled application. However, the business market is interested in complete grid solutions. This means that for a successful take up of grid technology on the business market the establishment of grid value networks is required. This again can only be achieved by implementation of sound business models for each player providing part of a grid solution. This paper discusses the business models of providers of grid-enabled application.