German shipbuilder Meyer Werft, along with partners, has initiated the zero4cruise project in Munich to explore the use of fuel cell technology for powering cruise ships. By integrating proton exchange membrane (PEM) fuel cells with methanol-reformer and battery systems, the consortium aims to develop a hybrid energy system. The project focuses on utilizing green methanol to drive the PEM fuel cells. A methanol-reformer is employed to break down methanol into hydrogen, which then powers the fuel cells to generate electricity for the ship or recharge onboard batteries. Noteworthy is the goal of creating large-scale fuel cell stacks and systems that can be retrofitted on existing ships, a move seen as crucial for enhancing the lifespan of cruise vessels. While fuel cell technology has proved successful in smaller vessels, its application in larger ships, such as cruise ships, is still in the early stages and requires further testing for long-haul voyages. Partnering with the German Aerospace Centre, the project involves testing a 500-kW maritime fuel cell system to simulate cruise ship load cycles and ensure long-term viability. With a substantial funding of €18.7 million from the German Federal Ministry of Economics and Technology, the zero4cruise project holds the potential to revolutionize the maritime industry, offering a sustainable and innovative energy solution for cruise ships.