Currently, countries worldwide are actively promoting climate neutrality or carbon neutrality, which has led to the rapid development of renewable energy. However, renewable electricity faces the issue of uneven spatial and temporal distribution. Storing renewable electricity in chemical form and transporting it as renewable energy carriers to regions or countries with high energy demand can facilitate the redistribution of renewable resources. Therefore, the offshore supply chain of renewable energy carriers is crucial for the global industry's comprehensive transition from fossil fuels to renewable energy.