Key principles of the Green Deal are to prioritise energy efficiency, develop a power sector based largely on renewable resources, to secure an affordable EU energy supply and to have a fully integrated, interconnected digitalised EU energy market. However, renewable energy scale up in Europe faces increasing resistance due to limitations in applicable land area and the willingness of local communities to have wind or solar parks close by. One possibility to resolve this issue is the usage of offshore space. Blue renewable energy sources such as offshore (floating) wind, floating solar (FPV), waves, tides and currents have a high and still unused potential to be explored. This is of particular importance in view of the current energy crisis and changing energy policy. For all offshore technologies, lengthy and expensive MetOcean, geophysical and environmental campaigns are needed, which slow down the upscaling of offshore renewables. The proposed Blue Energy Offshore Installation Accelerator (BLUE-X) will contribute to the Green Deal objectives and its related policies, in particular with regard to increasing the EU’s climate ambition for 2030 and 2050, supplying clean, affordable and secure energy, mitigating natural hazards and preserving and restoring ecosystems and biodiversity. BLUE-X is an innovative Copernicus based solution for optimising and accelerating decision making for blue renewable energy projects in all phases, from planning to construction, operation and decommissioning. The heart of this solution is a cloud-based IT network of relevant Earth observation and MetOcean data streams that are combined in decision support tools for each phase. As a result, the planning and construction phase can be significantly optimised, thereby reducing costs, and required time to full operation. BLUE-X will be available and showcased for all key offshore energy domains for some of the most important European offshore projects to date but can be applied anywhere.