On this study the theoretical and practical approach of an optimal geodetic referenceframe realization is described in detail. The Hellenic area due to its strong geodynamic behaviorcreates a rather inhomogeneous velocity field. This issue plays a critical role in stable and longtermgeodetic datum. The methodology of the Minimization of the Kinetic Energy Criterion(MKEC) is defined and analyzed on a permanent GNSS network consisting of 151 stations. Thesites velocities values were estimated from seven years continuously data. The applicationformula shows that the kinematic energy is minimized more than 60 percent in two differentapproaches for the International Terrestrial Reference Frame and the European TerrestrialReference System 1998 (ETRS89). In addition, the realization of the ETRS89 approach in Greeceis not offering any significant advantage. However, we proposed a new strategy, which minimizesthe total kinetic energy and it is found effective in local areas with strong geodynamic activity likethe Greece case.