Add to ORKGAbstract. Service grids and desktop grids are both promoted by their supportive communities as great solutions for solving the available com-pute power problem and helping to balance loads across network systems. Little work, however, has been undertaken to blend these two technologies together in an effort to create one vast and seamless pool of resources. In this paper we will introduce a new FP7 infrastructures project, entitled Enabling Desktop Grids for e-Science (EDGeS), that is building technolog-ical bridges to facilitate service and desktop grid interoperability. We pro-vide a taxonomy for existing state of the art grid systems and background into service grids, such as EGEE and volunteer computing platforms, such as BOINC and Xtre...