Mathias Uslar has studied computer science with a minor in legal informatics at the University Of Oldenburg, Germany form 1999 till 2004. In October 2004, he started working a scientific assistant at OFFIS – Institute for Information Systems in Oldenburg, later on working there as project leader and now as Group manager in the Energy branch of the institute. Since 2008, he is head of the CISE, the Centre for IT Standards in the Energy Sector. In October 2009, he successfully defended his phd thesis on the Integration of heterogeneous standards in the electric utility domain and smart grids. Mr Uslar is leading OFFIS’ national and international work packages with the scope of standardisation and interoperability. He is member of German GI, IEEE, ACM and IEC german mirror committee member DKE K 952, 952.0.10, 952.0.17 and international member of IE TC 57 WG 14 and 16. His research interests are with Semantic modeling and technical interoperability in smart grid architectures. Currently, he is working on modeling DER like CHP oder PHEV using the CIM (IEC 61968) and creating control structures for virtual power plants.