British engineer Tom Bacon, hailing from Essex, was recently honored with a blue plaque at his former residence in Little Shelford, Cambridgeshire, for his groundbreaking invention of the hydrogen-oxygen fuel cell. This clean and highly efficient power source, later dubbed 'Bacon Cells' by NASA, played a crucial role in the success of the Apollo missions, enabling astronauts to communicate, operate equipment, and even drink water in space. Bacon's vision and persistence in fuel cell technology have left a lasting legacy, inspiring sustainable energy research and applications in various sectors. Despite initial challenges, including struggles for funding and recognition, Bacon's work on fuel cells has paved the way for advancements in renewable energy, with potential applications now expanding to areas such as long-haul transportation and remote energy facilities. His contributions were recognized by Apollo 11 astronauts, and his impact continues to be acknowledged by experts in the field. The plaque, championed by the Cambridge-based charity Cambridge Past, Present & Future, serves as a tribute to Bacon's innovative spirit and enduring influence on clean energy efforts.