Francis Thomas Bacon, a Cambridge-based engineer, invented the first working hydrogen-oxygen fuel cell that powered the Apollo 11 mission to the moon. His 'Bacon Cells' provided secondary power for the missions, generating electricity, water, and other essentials for the astronauts. Bacon's efficient fuel cells were crucial to the success of the Apollo missions, with President Richard Nixon acknowledging their significance. Today, Bacon's work continues to inspire scientists working on renewable energy solutions, particularly in the areas of solar power, hydrogen generation, and battery storage. Despite initial challenges and lack of recognition, Bacon's perseverance led to his invention being utilized by NASA and invested in by a US company. His vision for fuel cells to power vehicles and provide green electricity remains relevant in the ongoing efforts toward clean energy. Bacon's legacy as an unsung hero and visionary in sustainable power solutions is celebrated by the charity Cambridge Past, Present & Future, which seeks to honor him with a blue plaque at his former home in Little Shelford, Cambridgeshire. Through his dedication to engineering solutions for the benefit of society, Bacon left a lasting impact on the field of renewable energy and continues to inspire advancements in the pursuit of cleaner and more sustainable power sources.