The 2023 CEF Energy call for preparatory studies for cross-border renewable energy projects has selected four initiatives across Portugal, Belgium, Denmark, Germany, and Poland, oversubscribing the funding. These projects span offshore wind, green hydrogen, and solar PV sectors, aiming to accelerate renewable generation deployment and interconnectivity. For example, Madoqua plans a green fuel terminal in Portugal, while the Pomeranian Green Hydrogen Cluster seeks to connect renewable power and hydrogen production facilities. Additionally, cross-border cooperation projects in the Baltic and North Seas focus on offshore wind farms, enhancing renewable integration and energy market optimization. The studies, lasting 12 to 24 months, aim to demonstrate feasibility for future CB RES initiatives. This initiative aligns with the EU's decarbonization strategy, energy market completion, and supply security goals, fostering cross-border collaboration for sustainable energy development.