As global demands for energy stability and environmental protection increase, traditional diesel generators as emergency backup power reveal more flaws, such as high carbon emissions, noise, unpleasant odors, and complex, costly maintenance. In contrast, hydrogen fuel cells, known for their cleanliness, quiet operation, and efficiency, have become the ideal alternative. Hydrogen fuel cells use hydrogen as fuel, emitting only water, with no odor and zero carbon emissions, achieving true zero pollution. They provide stable and reliable power, making them ideal for data centers, hospitals, and communication stations that require long-term reliable backup power, and they can quickly activate in emergencies to prevent operational interruptions. Compared to diesel generators, hydrogen fuel cells require simpler maintenance, reducing costs and labor while offering long service life and high reliability. Their applications are wide-ranging, from healthcare and industrial facilities to communication and financial infrastructure. Hydrogen fuel cells provide quiet, stable backup power and improve operational and maintenance processes, ensuring continuous power under any circumstances.