The document presents the NEP Data Management Plan (NEP-DMP), and describes the measures envisaged to efficiently manage the Research Data collected and generated during the project. The NEP-DMP is intended to be a living document in which information can be made available on a finer level of granularity through updates as the implementation of the project progresses and when significant changes occur. The document is therefore versioned in order to keep track of changes and improvements. The NEP-DMP describes the standards and methodologies for the collection and generation of Research Data that will be applied throughout the duration of the project, as well as the conditions for publishing such data. This document aims to facilitate the creation of common understanding and, where possible, common practices.