Gas transmission system operators in Baltic Sea countries have completed a pre-feasibility study for the Nordic-Baltic Hydrogen Corridor, envisioning a cross-border hydrogen pipeline network stretching from Finland to Germany. The project, involving Gasgrid Finland, Elering, Conexus Baltic Grid, Amber Grid, GAZ-SYSTEM, and Ontras, aims to transport 2.7 million metric tons of renewable hydrogen annually by 2040, potentially increasing to 4 million metric tons by 2050 and saving up to 37 million metric tons of CO2 equivalent. The study identifies the technical, legal, organizational, and economic requirements for the project's implementation. It also highlights the regions' capacity to produce 27.1 million metric tons of renewable hydrogen by 2040, positioning the corridor as a pioneering cross-border hydrogen pipeline in Europe. The next steps involve a detailed feasibility study and the formulation of an implementation timeline. The project has gained the European Commission's Project of Common Interest status and aligns with the broader European Hydrogen Backbone initiative, aiming to establish a 28,000 km hydrogen pipeline network by 2030 and expand it to 53,000 km across 28 countries by 2040. The analysis of green hydrogen costs reveals potential cost variations based on region and production method, with the Nordics well-positioned to utilize surplus hydro and wind power for hydrogen production and export to regions like Germany.