The Polish Grid Initiative commenced in 2009 as part of the PL-Grid project funded under the framework of the Innovative Economy Operational Programme [1]. The main purpose of this Project is to provide the Polish scientific community with an IT basic platform making use of Grid computer clusters, enabling e-science research in various fields. The Project is establishing a country-wide computing platform, which supports scientific research through integration of experimental data and results of advanced computer simulations carried out by geographically-dispersed teams. The solutions applied in setting up this e-infrastructure will ensure integration with other, similar platforms around the world. In the paper some basic facts concerning the Project history are given, PL-Grid goals are described and several examples of innovative grid services and software as well as support procedures developed to-date are presented.