As demand for cloud computing, artificial intelligence and digital services grows, data centres require increasingly large and reliable supplies of electricity. Even a short power interruption can affect critical computing and cooling infrastructure. While batteries and conventional generators remain widely used for backup power, hydrogen fuel cells are being explored as another option for reliable and potentially lower-emission power generation.<\/p>\n\n\n\n
For engineers, the question is not simply whether hydrogen can generate electricity, but how hydrogen fuel cells could work alongside batteries, renewable energy and existing electrical infrastructure.<\/p>\n\n\n\n
A hydrogen fuel cell is an electrochemical power generation<\/strong> device that converts the chemical energy of hydrogen into electricity. Unlike a conventional generator, it does not rely on combustion to produce electricity.<\/p>\n\n\n\n A Proton Exchange Membrane Fuel Cell (PEMFC) is one type of fuel cell <\/strong>being considered for applications requiring relatively compact systems and responsive power generation. Hydrogen enters the anode, where it is separated into protons and electrons. The electrons travel through an external circuit to generate electricity, while the protons pass through a membrane and combine with oxygen at the cathode. The main by-products are water and heat.<\/p>\n\n\n\n Multiple individual cells are connected to form a fuel cell stack, while several stacks and supporting components can form a larger hydrogen power system.<\/p>\n\n\n\n Data centres depend on continuous electricity for servers, networking equipment, storage systems, cooling and other critical infrastructure. This makes a reliable power supply essential.<\/p>\n\n\n\n A typical power architecture may combine grid electricity, batteries and backup generators, with redundancy built into critical systems. However, increasing power requirements are encouraging engineers to examine additional technologies that can support longer-duration energy requirements.<\/p>\n\n\n\n Hydrogen fuel cells are one such possibility. Their potential role depends on factors including the size of the facility, required backup duration, hydrogen availability, storage capacity and the overall electrical architecture.<\/p>\n\n\n\n The basic principle is relatively straightforward. Hydrogen is supplied to the fuel cell, where an electrochemical reaction separates hydrogen into protons and electrons. The movement of electrons through an external circuit produces electricity. Oxygen is supplied at the other side of the cell, and the resulting reaction produces water and heat.<\/p>\n\n\n\n In a data centre, however, the fuel cell itself is only one part of the system. Hydrogen storage, cooling, power electronics, controls, safety systems and electrical distribution must all work together.<\/p>\n\n\n\n This makes the design of a hydrogen power system<\/strong> an engineering integration challenge rather than simply a question of selecting a fuel cell.<\/p>\n\n\n\n Hydrogen fuel cells could potentially support backup power, particularly where longer-duration operation is required. Batteries can respond quickly when the main power supply is interrupted, but their operating duration depends on their available energy capacity.<\/p>\n\n\n\n A fuel cell generator can continue producing electricity as long as it has an adequate supply of hydrogen. This creates the possibility of combining both technologies in a coordinated system.<\/p>\n\n\n\n The electrical architecture must determine how power moves between the grid, battery storage, fuel cells and critical loads. Factors such as redundancy, switching, power conversion and load prioritisation therefore become important.<\/p>\n\n\n\n Hydrogen and batteries have different characteristics, which makes their combination particularly interesting.<\/p>\n\n\n\n A Battery Energy Storage System (BESS)<\/strong> can provide rapid power and respond quickly to changes in demand. Hydrogen can potentially support longer-duration energy requirements when sufficient fuel is available.<\/p>\n\n\n\n A hybrid power system could therefore use batteries for immediate response and hydrogen fuel cells for sustained generation. Renewable energy and grid power could also form part of the system.<\/p>\n\n\n\n Effective BESS integration would require coordinated controls, power converters and energy management systems to determine when each energy source should supply or store electricity.<\/p>\n\n\n\n Hydrogen\u2019s potential appeal comes partly from its ability to generate electricity without combustion at the point of use. However, the overall environmental impact depends significantly on how the hydrogen is produced.<\/p>\n\n\n\n Hydrogen also presents challenges. Storage, transportation, compression, safety, infrastructure and cost all need to be considered. The availability of low-carbon hydrogen is another important factor.<\/p>\n\n\n\n For data centre operators, therefore, hydrogen is not a standalone answer. Its value depends on how effectively it can be integrated with other data centre power systems.<\/p>\n\n\n\n The future of hydrogen energy in data centres may involve integrated systems combining fuel cells, batteries, renewable energy and the grid. Microgrid controls<\/strong> could coordinate these sources according to demand, availability and system requirements.<\/p>\n\n\n\n This also creates opportunities for further fuel cell innovation<\/strong>, particularly in areas such as efficiency, controls, hydrogen storage and system integration.<\/p>\n\n\n\n The engineering challenge<\/a> is increasingly interdisciplinary. Mechanical, electrical, energy and control engineering principles must work together to create a reliable system.<\/p>\n\n\n\n These challenges are not limited to industry research. Engineering students can also explore them through practical design challenges.<\/p>\n\n\n\n The CADD Centre International Design Competition 2026 (IDC 2026)<\/strong> includes a dedicated New Energy for Data Centres domain, where participants work on a design challenge involving hydrogen fuel-cell-based power generation.<\/p>\n\n\n\n The competition takes students through multiple stages, from engineering fundamentals and ideation<\/strong> to design, CAD modelling, analysis, simulation and feasibility<\/strong>. This allows participants to explore not only what their solution looks like, but also how it performs under defined conditions.<\/p>\n\n\n\n IDC 2026<\/a> is conducted in partnership with Dassault Syst\u00e8mes<\/strong>, with the 3DEXPERIENCE Platform forming part of the digital design and simulation workflow.<\/p>\n\n\n\n For engineering students, the competition provides an opportunity to work on a contemporary engineering problem while developing competencies in engineering design, CAD, simulation, validation and technical presentation. The resulting work can also contribute to an engineering portfolio.<\/p>\n\n\n\n Hydrogen fuel cells are being considered for data centre power because they offer a potential route to reliable, longer-duration electricity generation without combustion at the point of use. However, their practical application involves much more than the fuel cell itself. Hydrogen storage, batteries, power electronics, controls, safety and electrical infrastructure must all be considered as part of the system.<\/p>\n\n\n\n This makes hydrogen-powered data centre infrastructure<\/strong> an interesting engineering design problem – one that requires engineers to think across multiple disciplines.<\/p>\n\n\n\n For students looking to explore such challenges, CADD Centre International Design Competition 2026<\/a> <\/a>provides an opportunity to take an industry-oriented problem from concept to digital design, simulation and feasibility.<\/p>\n\n\n\n What is a hydrogen fuel cell?<\/strong><\/p><\/div>Why Do Data Centres Need Reliable Power?<\/strong><\/h2>\n\n\n\n
How Do Hydrogen Fuel Cells Work?<\/strong><\/h2>\n\n\n\n
Could Hydrogen Fuel Cells Handle Backup Power?<\/strong><\/h2>\n\n\n\n
Hydrogen and Battery Storage<\/strong><\/h2>\n\n\n\n
What Makes Hydrogen Attractive for Data Centres?<\/strong><\/h2>\n\n\n\n
Could Hydrogen Become Part of Future Data Centre Design?<\/strong><\/h2>\n\n\n\n
Explore the Challenge at IDC 2026<\/strong><\/h2>\n\n\n\n
Conclusion<\/strong><\/h2>\n\n\n\n
Frequently Asked Questions<\/strong><\/h2>\n\n\n\n