Siemens has over the last years worked dedicated to develop and qualify a subsea power distribution system. The goal has been to create and qualify a complete and deployable power distribution system including all required subsea connection solutions as well as an overall power control & communication system to realize full subsea digitalization with high performance standardized interfaces. This system is now ready for the final phase of qualification where the performance parameters of the system are verified in a subsea environment. All system units will be qualified for operation at 3000 m water depth. The qualification has been performed in close collaboration with 4 major operators in order to ensure compliance with the future requirements. This presentation will focus on the complete journey from idea through component qualification, material compatibility and pressure testing to system verification and final full load testing in intended environment. The Subsea Power Grid is now a unique tool for unlocking the potential of more subsea processing in order to increase recovery and boost production in sustainable and environmental friendly way.