This report provides insight in the planned enabling solutions to be developed within HYPERRIDE project. The descriptions and general specifications outlined here have to be read in context with: D2.1: Requirements on grid infrastructure - describing systemic requirements for DC and hybrid Alternating Current and Direct Current (ACDC) grid installations with derived Key Performance Indicators (KPI)s to assess the grid quality; D2.2: Use case specification - a collection of use cases for the pilot installations in HYPERRIDE and relevant technologies such as Information and Communications Technology (ICT) solutions and components (converters, breakers, measurement units). While some solutions for DC grid installations can be directly transferred from AC to DC, it is necessary that novel solutions are developed in many areas from the overall system to individual components. The areas where HYPERRIDE will provide and showcase them at the demonstration sites are: Grid planning and simulation; Grid automation methods; Protection methodologies; Safety and security; Meteorology; Converter technologies; Test and validation methods. For each individual development a start and end Technology Readiness Level (TRL) description is indicated including the development path in subsequent work packages and a general specification based on the current state of knowledge.